▼

Backflow Prevention

Show All Answers

1. I received a letter saying my annual backflow test is due. What do I need to do?

Contact a Backflow Tester from our List of Approved Backflow Testers and schedule a test.

Provide a copy of the letter to your Tester. After completing the test, the Tester will submit the results to Charleston Water System.

2. I'm a renter, why did I receive a letter about the backflow preventer?

Compliance with our backflow requirements is the responsibility of the water account holder. If you are renting a home or commercial space, your landlord or property management company may agree to take care of the backflow installation and/or annual testing, but it is the ultimately the account holder's responsibility.

3. I received a letter saying I need to install a backflow preventer. How do I do that?

We recommend contacting a licensed plumber. You can install it yourself, but it must be installed according to our specifications, and we will inspect it after installation.

If you hire someone to install it, provide him with a copy of the letter and installation guidelines enclosed in the letter.

Once it's installed, you or the installer should contact us to request an inspection. If it passes inspection, the final step is to have it tested by a tester from our List of Approved Backflow Testers.

4. Why are backflow preventers tested annually?

Backflow prevention assemblies have internal seals, springs, and moving parts that are susceptible to wear and failure. Annual testing ensures they are functioning properly and protecting our public water system.

5. Do Backflow Testers work for Charleston Water System?

No, they are independent private contractors. Charleston Water System does not install or test backflow preventers. We only inspect them.

We do require backflow tests to be performed by Testers on our List of Approved Backflow Testers.

6. Who should I contact for more information?

Contact our Cross-Connection Control Program by calling (843) 727-7148 or send us an email.

7. How do I know if I need to install a backflow preventer?

Residential customers are only required to install a backflow preventer if the home has an in-ground irrigation system or pool. It is the customer's responsibility to notify us if an irrigation system or pool is installed.

Backflow requirements vary for commercial customers based on the business's water use. Our staff reviews newly established commercial water accounts to assess the degree of backflow hazard and notifies businesses about backflow requirements.

8. What is backflow?

Backflow is the reversal of the normal flow of water. It's caused by pressure differences and can allow contaminants from an irrigation system, boiler, or other source to enter a home or building's plumbing system or the public water supply.

Backflow prevention devices protect plumbing systems and our public water supply by preventing backflow.

9. What is a cross connection?

A cross connection is a link between a potable water system and a non-potable water system, in our case, Charleston Water’s public water lines and our customers’ private plumbing systems. Backflow can occur through cross connections.

10. What causes backflow?

A sudden drop in water pressure in our public system can cause backflow.

Backpressure can also cause backflow. Backpressure occurs when a building's plumbing system has higher pressure than the public water supply.

Both situations can allow water and contaminants from a private plumbing system to reverse flow into the public supply, potentially contaminating the water for other users. Backflow preventers keep this from happening.

11. How does Charleston Water System prevent backflow?

Since 1985, we have installed residential dual check valves on every residential water service. We also require a customers whose water use presents a backflow hazard to install and annually test a backflow prevention assembly according to our specifications.

12. What can I do to protect my home plumbing system from backflow?

Install a hose-bib vacuum breaker on each of your outside water spigots. These devices will prevent water from being back-siphoned from a hose or irrigation system into your home's plumbing.

Hose-bib vacuum breakers are inexpensive and available at hardware stores. They have been required by the Standard Plumbing Code since 1963.

13. What is the backflow administration fee?

This annual fee is assessed on each backflow prevention assembly to offset the cost of maintaining our backflow prevention program. Residential irrigation customers are exempt from this fee.

14. A backflow preventer was already installed when I moved into this home / commercial space, but I don't think I need it. What should I do?

Different customers present different backflow hazards, even at the same location. If your water use is different from the last customer, contact us to schedule an assessment.

15. I don’t use my irrigation system. Do I still have to test and maintain my backflow preventer?

As long as the irrigation system is connected to your plumbing system, the potential for
backflow exists, and you must comply with all backflow requirements, including having it tested annually.

To eliminate these backflow requirements, the irrigation system must be physically disconnected from your plumbing system.

If your irrigation system is served by the same water service that serves your home or business, you can have the irrigation system cut and capped. Once this is complete, contact us to schedule an inspection.

If your irrigation system is served by a separate irrigation meter, contact us to close the account and we will lock or remove the meter.

▼

Billing & Customer Service

Show All Answers

1. Can I get my bill adjusted if I had a leak?

If you find a water leak and repair it, you may be eligible for an adjustment on the sewer portion of your bill. We only offer sewer adjustments because water from a leak typically does not enter the sewer system. We require proof of repair before granting a leak adjustment, and customers are eligible for one leak adjustment every three years.

Use the link below to submit a leak adjustment request, or call our Customer Service Department at (843) 727-6800. Leak Adjustment Request Form

2. Can I get a discount on my sewer bill when I fill my pool?

Customers who fill a pool are eligible for an adjustment to the associated sewer charges once every five years. 

More info:
Customer Service (843) 727-6800 / email.

3. Can I sign up for automatic recurring payments using my credit card?

Not at this time. 

We only offer Auto Draft from a bank account because we’ve opted not to store customer credit card info. Sign up for Auto Draft here or complete the form on the back of your bill.

4. How is my sewer bill calculated?

Sewer bills are based on water consumption and include a monthly minimum bill plus a volume charge for billable sewer usage above 2 Ccf (1,496 gallons). Learn how to calculate your sewer bill

5. How is my water bill calculated?

Your water bill includes a monthly minimum charge plus a unit volume charge for water consumption above 2 Ccf (1,496 gallons).
Learn how to calculate your water bill

6. Why is there a charge for the storm water fee on my water bill?

If you live inside the city of Charleston, your bill includes a charge for City of Charleston Storm Water Utility. We act as a billing and collection agent for this fee, but we do not determine the fee, nor are we responsible for storm water drainage.

Questions: contact the City of Charleston Storm Water Dept. (843) 724-7246

7. Why do water and sewer rates keep going up?

The primary driver of rate increases is the need to fund new and replacement infrastructure.
Many of our water mains, sewer lines, and treatment facilities are over 50 years old and have reached the end of their service life.

Replacing this aging infrastructure is necessary to maintain the level of service we all expect, but the cost is high.

Charleston Water System funds infrastructure by issuing revenue bonds and raising rates to repay the debt. Retained earnings and impact fee revenue provide some funding, but not enough to meet the needs.

The three-year series of rate increases approved in 2010 are funding our current Capital Improvements Program, which includes 39 high-priority water and sewer infrastructure projects. The total estimated cost of these projects is $155.9 million.

The cost of wide-scale infrastructure replacement and it’s impact on water and sewer rates is a challenge faced by utilities across the country. Learn more about our Capital Improvements Program

8. Why am I charged a minimum bill even if I don't use any water?

Our water and sewer rate structures both include a minimum bill, which is a monthly charge for service availability and up to 2 Ccf (1,496 gallons) of water consumption.

The minimum bill is designed to recover the costs associated with making service available, including costs related to metering and billing and infrastructure. The water minimum bill also pays for the costs associated with providing water for fire protection, one of our key functions.

These costs remain constant regardless of whether you use any water in a billing period.

9. What is an irrigation account?

It is a separate water meter that is only used for irrigation. Because water used for irrigating does not flow into the sewer system, irrigation accounts are not billed for sewer.

If you frequently water your lawn or garden, or add water to a pool, you may want to consider applying for an irrigation meter.

Learn more about irrigation meters

10. Does Charleston Water System bill for other sewer utilities?

Yes, Charleston Water System provides billing services for a number of sewer providers within our water service area.
List of other sewer providers

11. What is Automated Meter Reading (AMR)?

Automated Meter Reading, or AMR, is a new technology that allows meters to be read automatically using a laptop computer.

These meters emit radio signals that are collected by computers in our meter readers' trucks. They allow us to collect meter readings automatically.

Charleston Water System began pilot testing this new technology in 2003 and has installed about 60,000 units. The benefits of AMR include more precise meter readings and improved efficiency.

12. What is my billing cycle?

Your water meter is read approximately every 28-31 days. If we are unable to get a reading, your bill will be estimated based on your previous water usage. The following month, an actual reading will be taken and we'll make any necessary adjustments.

You can help by making sure your water meter is accessible. Common obstacles that prevent us from reading meters include debris, cars parked over a meter, and unfriendly dogs.

13. What is the sewer cap?

It's the maximum sewer charge for residential customers who use 18 Ccf or more of water a month. The sewer cap is designed to account for high residential water use related to outdoor watering, which does not enter the sewer system.

The sewer cap does not apply to the domestic meter for residential customers who have a separate irrigation account or commercial customers.

Learn more about our sewer rates

14. Why is my bill higher than usual?

The most common reasons for a high bill are changes in water use and leaks.

Did you do anything that would use more water than usual, such as outdoor watering or having house guests? Check for leaks. Typical culprits are running toilets, leaking outdoor spigots, and damaged sprinkler heads.

You can use your water meter to help determine if you have a leak. The little red triangle on the meter dial is a flow indicator. Turn off all water-using fixtures and appliances inside and outside your home, then check the triangle. If it’s spinning, even slightly, that means water is going through the meter, and you probably have a leak. Keep searching or contact a plumber for help.

15. Will I be charged for sewer while my home is under construction?

Charleston Water System will waive the monthly sewer charge for new homes under construction until one of the following occurs:

• Actual sewer usage begins
• A certificate of occupancy is issued
• The maximum time period of 4 months has passed.

Upon receipt of a monthly bill, the homeowner should strike though the sewer charges, write the words “home under construction, Attention: Billing Dept.” and return with payment.

▼

Boil Water Advisory

Show All Answers

1. Do I still need to boil my water if I have a filter system on my faucet or refrigerator?

These filters improve the aesthetics of water (improve taste and odor) but do not remove harmful bacteria. Learn about the your filter by contacting the manufacturer or NSF International, an independent testing group (Ph: 1-800-673-8010). If in doubt, boil your water or use bottled water.

2. How long must a Boil Water Advisory or Notice be in effect?

An advisory or notice remains in effect until test samples show the water is safe to drink. Testing for bacteria requires 16 hours to complete.

3. How will I be notified if my home / business is affected by an advisory or notice?

By regulation, Charleston Water System must follow certain public notification efforts, which include dissemination to media outlets, door-to-door notification, and any other means to notify water users.

4. How will I know when the advisory or notice has been lifted?

We repeal a precautionary advisory or notice when we confirm the water is safe to drink. Stay tuned to local media for updates. We will also post updates on this website and place an automated message on the Customer Service phone system at (843) 727-6800.

5. Is the water safe for washing dishes, laundry, and bathing?

The water is safe for washing dishes, but you should use hot, soapy water (you may add one tablespoon of bleach per gallon as a precaution) and rinse dishes in boiled water. There are no restrictions on doing laundry. The water is also safe for bathing during an advisory or notice. If the water is contaminated by a chemical that will cause harm on contact, Charleston Water System will issue a Do Not Use Notice, meaning the water should not be used for bathing.

6. Since an advisory is a precautionary measure, will I get sick if I drink the water or if I drank some water before I found out about the advisory?

Until test results show the water is safe to drink, you should not drink the water without boiling it first. During an advisory, chances are, if you are in good health, you will not get sick from drinking the water. However, young children, some of the elderly, and people with severely compromised immune systems should not drink the water until it is deemed safe to drink. Symptoms of illness caused by bacteria in the water may include diarrhea, cramps, nausea, headaches, or other symptoms. Please note that these symptoms are not caused only by organisms in drinking water. If you experience any of these symptoms and they persist, you may want to seek medical advice.

7. Under what circumstances will Charleston Water System issue a Boil Water Advisory or Notice?

The South Carolina Department of Health and Environmental Control (SCDHEC), through the State Primary Drinking Water Regulation (R.61-58), regulates water utilities and specifies instances when an advisory or notice must be issued. An advisory must be issued in the following instances:

• If untreated water reaches the distribution system
• Loss of pressure in the entire distribution system or a significant portion of the system
• A water main break where dirt and debris have entered the distribution piping
• Prior to a hurricane making landfall (in this situation, the advisory would be issued by DHEC)

A Boil Water Notice must be issued under the following circumstances:

• When test samples indicate the presence of total coliform bacteria

These situations are not the only times when an advisory or notice should be issued. Specific situations, upon consultation with DHEC, may also require an advisory or notice.

8. What are a Do Not Drink Notice and a Do Not Use Notice?

A 'Do Not Drink Notice' will be issued when the water contains a chemical contaminant that cannot be removed by boiling. In this case, bottled water should be used for drinking or cooking.

A 'Do Not Use Notice' will be issued if there is a contaminant in the water that may be inhaled or otherwise harmful on contact.

9. What are total coliform bacteria?

Total coliform bacteria are a collection of microorganisms that live in large numbers in the intestines of humans and animals, as well as in most soils and surface water. A sub-group of these microorganisms is the fecal coliform bacteria, the most common member being E coli. These bacteria occur naturally in lakes and streams, but indicate that the water is contaminated with human or animal waste and therefore may pose a health risk to people who drink it.

The water treatment process removes these bacteria from the water, but events such as a water main break or a loss of pressure in the water distribution system may allow these bacteria to enter water lines through cracks in pipes or back-siphoning from a residential plumbing system. Boiling water vigorously for 1 minute will kill these bacteria and make water safe to drink.

10. What is a Boil Water Advisory and is it the same as a Boil Water Notice?

A Boil Water Advisory (BWA) is a precautionary public statement advising customers to boil tap water before consuming it. They’re issued when an event has occurred allowing the possibility for the water distribution system to become contaminated. An advisory does not mean that the water is contaminated, but rather that it could be contaminated. Since the water quality is unknown, customers should assume the water is unsafe to drink and take the appropriate precautions. An advisory is different from a Boil Water Notice, which is issued when contamination is confirmed in the water system. During a notice, all customers must boil their water before consuming it or use bottled water.

11. What should I do during a Boil Water Advisory or Notice?

You should boil tap water vigorously for at least 1 full minute prior to using it for drinking or cooking (the minute starts when the water begins to bubble). This includes water used for brushing teeth, making ice, washing raw foods, preparation of drinks, and water for pets. Wait for the water to cool before using it, or store it in the refrigerator in a clean container. Boiling removes harmful bacteria in the water that may cause illness. You should throw away ice made during the time the advisory or notice was issued, as freezing does not kill bacteria.

After an advisory or notice has been lifted (if contamination of the water system did occur), you should flush household pipes, ice makers, water fountains, etc. prior to using for drinking or cooking. Flushing simply means letting the water run to ensure that no contaminated water remains in your pipes. Follow the these guidelines for flushing:

• Run all cold water faucets in your home for one minute
• To flush automatic ice makers, make three batches of ice and discard
• Run water softeners through a regeneration cycle
• Run drinking water fountains for one minute
• Run water coolers with direct water connections for five minutes.

12. Where can I find more information?

For more information about Boil Water Advisories or Notices, please contact Charleston Water System at 843-727-6800 or the S.C. Department of Health and Environmental Control.

13. Will DHEC issue a Boil Water Advisory in preparation for a hurricane?

No,

If a hurricane is about to impact our service area, then the Charleston Water System may, after consultation with SCDHEC, issue a Boil Water Advisory as a precautionary measure.

After the storm:

- We look for damage to our system and make any repairs as quickly as possible.

- If tests show the water is safe to drink, we lift the Boil Water Advisory.

- If tests indicate bacterial contamination, we issue a Boil Water Notice.

- Stay tuned to media reports for instructions. 

▼

HomeServe Water & Sewer Service Line Coverage

Show All Answers

1. Why did Charleston Water System partner with HomeServe?

We often receive calls from customers about water leaks that turn out to be on an exterior water service line. We find that many customers do not realize the water and sewer pipes in their yard are part of their private plumbing system and that they are responsible for any repairs, which can be expensive.

To address this, we decided to provide customers with an option for avoiding unexpected repair costs by offering an affordable warranty option for water service lines. Since establishing our own program was not feasible, we decided to partner with a company to provide this service.

After a rigorous selection process that included a thorough review of HomeServe’s protection plan terms, business practices, and customer satisfaction, we decided to partner with HomeServe.

This partnership not only helps raise awareness about service line responsibility, but it also provides an affordable option from a reputable company.

2. How did Charleston Water select HomeServe for this partnership?

We invited companies that offer service line warranties to submit a proposal for establishing a partnership program. Three companies submitted proposals.

Charleston Water selected HomeServe based on its product offerings, customer service and quality assurance processes, customer satisfaction, plan for working with local plumbers, and references from other utilities that have similar partnerships with HomeServe.

3. Do I need a warranty for my home's water or sewer service line?

It is up to you. Some people choose to pay for unplanned expenses out-of-pocket, while others prefer protection plans and extended warranties to avoid large unplanned expenses.

We encourage homeowners to consider their individual situation and decide if the service line protection plan is a good fit for them.

4. The water account is not in my name, so why did I receive a letter from Charleston Water System about this?

The letter was reviewed and approved by CWS staff, but it was mailed by HomeServe. Because state law prohibits us from sharing any customer information with a private company for the purposes of solicitation, HomeServe acquired names and mailing addresses from another source. As a result, the letters may be addressed to someone other than the CWS account holder.

5. If I sign up for HomeServe, who should I contact for questions or to make a claim?

Contact HomeServe at 1-855-310-6275.

▼

Irrigation Accounts

Show All Answers

1. What’s the advantage in getting a separate irrigation account?

The advantage is that you will not pay sewer charges on the water you use outdoors. You'll continue to pay sewer charges for your residential account that supplies your home, but those charges will be based on your indoor water usage, which typically decreases when you begin using your irrigation meter for outdoor watering.

2. How much does it cost to install a residential irrigation meter?

The total cost to install a ¾” domestic irrigation meter is $535. That includes a $500 tap fee, which covers the cost to install and connect the new meter, and a $35 account origination fee. This fee is nonrefundable or transferable. It’s important to note that irrigation accounts require you to install a backflow prevention device and have it tested annually by an approved tester. A certified plumber or contractor can install a backflow preventer for you. The cost will depend on the type of device required and the installation labor.

3. How much does it cost to install a commercial irrigation meter?

Commercial accounts are charged both a tap and impact fee based on meter size. In most cases, an irrigation meter can be very cost effective because commercial accounts are charged wastewater based on 100 percent of their water use fees. Tap and Ipact Fees cover the cost for the Charleston Water System distribution system to install and connect the new meter. A $35 account origination fee is also charged for creation of the new account. This fee is nonrefundable and nontransferable. It is important to note that irrigation accounts require installation of a backflow prevention device. These devices must be tested annually by an approved tester. A plumber or contractor can install a backflow preventer for you. The cost will be determined by the type of device required and the installation labor. Annual testing fees vary, so it’s a good idea to call around for pricing, but be sure to use a Charleston Water System approved tester.

4. How much will I save on my monthly bill if I install an irrigation meter?

Your savings depends on where you live and your water use. Most customers see a payback on the up-front cost of installing the irrigation meter in 4 to 5 years.
For a savings and payback period estimate, call (843) 727-6800, or email us.

*One important thing to consider is how getting an irrigation meter will affect your domestic sewer bill if you live in a single family home. You won’t pay any sewer charges for water used through an irrigation meter, but your sewer bill for your residential account will increase slightly because your domestic sewer charges will be calculated based on 100% of your domestic water usage instead of 95%.

5. How do I apply for an irrigation meter?

Complete the Application For Service form. If you have any questions, contact us at 843-727-6800 or email us.

6. How long will it take to get an irrigation meter installed?

It typically takes eight weeks from the time you apply and pay for an irrigation account to the time it is installed.

Additionally, our backflow requirements must be met before we will activate the irrigation service. We require irrigation accounts to have a backflow prevention assembly in order to protect our water system against contamination from backflow.

We do not install or test backflow preventers. Customers are responsible for installing backflow preventers in accordance with our requirements and having them tested annually. For more information: Backflow requirements for residential customers 

7. Who installs the irrigation meter?

Charleston Water System will install the new meter box and meter. The customer is responsible for connecting their water service line on their property to the new meter (we recommend hiring a qualified plumber, landscaper, or contractor to do this). We do not install irrigation systems or required backflow preventers.

8. Who can I contact for more information?

Please contact our Customer Service Department at 843-727-6800 or via email.

▼

Jobs

Show All Answers

1. What is your hiring process?

Once a position closes, all applications are reviewed by the hiring department. The Human Resources Department will then contact the qualified applicants, and for certain positions, schedule "Work Keys" testing to measure the applicant's work skills.

Applicants who meet the "Work Keys" criteria will be scheduled for an interview, and depending on the position, there may be several interviews. Background and reference checks will then be conducted on selected candidates, and an applicant must undergo a pre-employment physical and drug testing before he / she is hired.

2. Do you accept resumes?

No. We only accept applications submitted through our online employment application system.

3. How long will my application remain active?

When you submit an application for an open position, we'll keep your application for six months and may consider you if the position becomes vacant again within that period or time.

When you complete an application using our online system your information is stored, so you can return an edit your application as often as you like and apply for positions as they come open.

4. If I apply for one position will I be considered for any other open positions that I'm qualified for?

No. If you're would like to be considered for more than one position, you must apply for each position using our online employment application system.

5. What is the Work Keys test?

Work Keys is a tool used to assess applicants' skills in the areas of reading, math, locating information, teamwork, observation, listening, and writing. The test is administered at Trident One Stop Career Center. Candidates applying for positions that are Work Keys tested must take this test for further consideration in the hiring process.

▼

New Development

Show All Answers

1. How do I find out if my property is in Charleston Water System's service area?

Please see our service area map.

2. How do I find out if water and/or sewer service is available for my property?

Please complete a Service Availability Letter Request Form. A written response will be mailed to you within five business days.

3. How are tap and impact fees determined for new water and sewer projects?

Please see our tap and impact fee schedule.

4. What is the water pressure in Charleston Water's distribution system?

Water pressure varies by area, and water system design calculations must be based on the results of flow testing. We will perform a flow test upon request for a fee.

Request a flow test: Hydrostatic Flow Test Request Form.

5. Can I get a map of the water and sewer lines in my area?

Yes, please submit a Map Request Form.

6. What are the costs associated with a new project?

Impact fees, tap fees, warranty fee, and bonds are all included in the cost for a new project.

▼

Sewer

Show All Answers

1. Is it okay to flush wet wipes and other products labeled "flushable"?

No. These products, ranging from wipes to toilet cleaners, do not break down easily in the sewer system the way toilet paper does.

"Flushable" wipes, paper towels, and other fibrous material can clog pipes or tangle into massive knots that damage pumps. In severe cases, a clogged sewer line or damaged pump can lead to a sewer overflow.

You can help prevent clogs in your plumbing and the public sewer system by only flushing human waste and toilet paper--put everything else in the trash!

2. Is it okay to flush old medications?

No. Wastewater treatment plants aren’t designed to remove pharmaceuticals, so flushing them can introduce these compounds into the water environment, where they can impact wildlife and sources of drinking water.

The Food and Drug Administration (FDA) recommends disposing of expired medications in the trash. To prevent tampering, take the medicine out of its original container and mix with coffee grounds or kitty litter in a plastic bag or other container. FDA drug disposal guidelines

3. How does grease clog the sewer system?

Grease hardens as it cools. Even when mixed with hot water, the grease will separate out and settle in plumbing systems and sewer lines. Over time, grease accumulation can severely reduce the capacity of a pipe or block it completely, sometimes resulting in sewer back-ups or overflows.

Dispose of fats, oils, and grease by pouring it into a container and putting it in the trash.

4. How is wastewater treated?

Visit this page for a video and overview of the treatment process.

5. What is activated sludge and how does it clean the wastewater?

“Activated sludge” is a mass of microorganisms that digest organic material in wastewater. The microorganisms clean the wastewater by digesting organic materials and other contaminants. Wastewater remains in aeration basins for about three hours to allow time for the microorganisms to grow and consume the bacteria.

▼

Vendors

Show All Answers

1. May a vendor see copies of bids prior to award? If so, where?

Yes. A vendor may review copies of the bids received prior to award, after the bid opening. Please contact a Purchasing Agent. to make an appointment.

2. What are the most frequently considered factors involved in determining a responsive bid and a responsible bidder?

A "responsive bid" is a bid that meets all the terms, conditions and specifications of the IFB. A "responsible bidder" is a bidder who has the financial resources, personnel, facilities, integrity, and overall capability to complete a particular Charleston Water System contract successfully.

3. Can a stipulation of "all or none" on behalf of the vendor for his materials lead to a disqualification of the bid?

Ye, if it is in the best interest of the Commission to accept the "all or none" stipulation, the bid may be accepted for evaluation. However, if the Commission determines that the "all or none" stipulation is not in its best interest, the bid may be disqualified by the Director of Operations Support.

4. When is resident preference applicable?

Resident preference is applicable only in the case of tie bids.

5. May a vendor call and ask to review the contract file and request information about an award?

Bidders may request to review files. To do so, contact the Director of Operations Support.

6. Does the Commission have special authorization purchases?

Yes, they are called small field purchases. Small purchase orders (SPO) cover the procurement of certain minor miscellaneous materials and supplies, the value of which do not warrant purchasing under centralized. The SPO is limited to a specified monetary amount $200.00 per order and is authorized for use under specific conditions.

7. Who manages surplus property?

Surplus property is managed by the Purchasing Department, which also schedules auctions, spot sales or competitive bidding for surplus property.

8. I have a question about surplus property. Who should I talk to?

Questions concerning surplus property should be referred to a Purchasing Agent.

9. What should I do first if I wish to bid on Commission business?

Contact the Purchasing department to request a Vendor Application form. Completing and returning the form will guarantee placement on the bidder’s mailing list.

10. What happens if I can only bid on part of the items in an IFB?

You should bid on only those items you can provide. The Director of Operations Support has the option to decide, after bid evaluation, whether or not a bid-in-part is feasible for the Commission. The individual bid will indicate whether the bid will be awarded on an individual line item basis or in the aggregate or combination thereof.

11. How can I get my product approved?

Product approval or evaluation is normally done after bids are received and opened. However, in some instances the Commission will evaluate certain products and establish a Qualified Products list. When this is the case, products can be submitted for evaluation at any time.

12. May I bid if I don't handle the brand listed on the IFB?

Yes, if the bid specified "a brand name or Charleston Water System approved equal," you may offer an alternative" or equal" brand. "Or equal" products will be evaluated after bids are received, based on literature submitted and any required testing for the product.

13. How do I get a copy of Charleston Water System's 2015 W-9 form?

Click here to download our 2015 W-9 (PDF).

▼

Water

Show All Answers

1. Does Charleston have a shortage of water?

No, we are fortunate to have an abundant water supply, even during a drought.

2. Does Charleston's water contain fluoride?

Yes, our source water includes naturally occurring fluoride (approximately 0.15 mg/L), and we adjust the level to approximately 0.7 mg/L during the treatment process. 

Drinking Water Fluoridation (Position Statement)
Adopted by the Board of Commissioners October 24, 2017

The Charleston Water System (CWS) supports the recommendations of the World Health Organization, American Medical Association, Canadian Medical Association, Centers for Disease Control and Prevention (CDC), American Dental Association, Canadian Dental Association, South Carolina Dental Association and other professional organizations in the medical community, for the proper fluoridation of public water supplies as a public health benefit. We also support regular scrutiny of the most current peer reviewed research on fluoride and the positions of the medical and dental community.

We adjust the naturally occurring level of fluoride in our drinking water in a responsible, effective, and reliable manner that includes monitoring and controlling fluoride levels as mandated by state and/or federal laws, regulations and recommendations. We carefully monitor and adjust potable water to achieve the scientifically recommended concentration of fluoride for protection against dental caries, which is 0.7 parts per million. Our annual cost for this program is about $110,000, which equates to $0.25 per person across the approximately 450,000 people in our water service area.

The CWS participates in the fluoridation of water under the guidance of the South Carolina Department of Health and Environmental Control (SCDHEC), Oral Health Division. SCDHEC coordinates their program in conjunction with the CDC and the U.S. Department of Health and Human Services.

If there are questions regarding these programs, please contact:

SCDHEC
Division of Oral Health
2100 Bull Street, Columbia, S.C. 29201
P: (803) 898-9577
F: (803) 898-2065

3. How is the water disinfected?

We use chlorine dioxide and chloramines (a compound formed by combining ammonia and chlorine) to protect against harmful microorganisms.

Chloramines are more stable than chlorine in the water distribution system, and chloramine residuals help maintain consistent water quality. The amount of disinfectant is carefully measured to the lowest level needed to keep the water free of disease-causing organisms. Learn more about the water treatment process.

4. I live in an older home, should I be concerned about lead pipes contaminating my water?

Charleston Water System prevents the corrosion of lead plumbing into water by adjusting the properties of our water. We add a corrosion inhibitor during the treatment process, which forms a molecular barrier between the pipe and the water inside.

The results of our lead testing are well below the USEPA’s limit of 15 parts per billion (ppb). Lead testing results are included in our most recent water quality report.

As an extra precaution, customers can minimize the potential for lead exposure by flushing out water that has been sitting in your home’s plumbing for several hours or more. Just let your water run for up to two minutes before using it for cooking or drinking.

Charleston Water System offers free lead tests. Testing kits are available at our office locations: 103 St. Philip St., Downtown, and 6330 Murray Drive, Hanahan, Customer Service Center.

5. Is it okay to use the hot water tap for cooking or drinking?

No. Always use the cold water faucet for drinking and cooking.

Hot water from the tap comes from your water heater, which may contain impurities. Also, if you have plumbing with lead solder or brass fixtures (which contain lead), the lead is more likely to leach into hot water than cold water. Instead of using the hot water tap, heat cold water on the stove or in the microwave.

6. Is my water safe to drink or is bottled water or filtered water safer?

Yes, Charleston Water System tap water meets or exceeds all drinking water standards and is safe to drink. Bottled or filtered water is also high quality, but it is much more expensive than tap water.

7. Is tap water safe for use in aquariums?

No. We use chloramines (a combination of chlorine and ammonia) to disinfect drinking water which are harmful to fish and other aquatic life. There are a number of products available at pet stores to remove chloramines from your fish tank.

Our tap water is safe for dog, cats, and other non-aquatic pets.

8. My dishwasher leaves water spots on my glasses. What can I do to prevent this?

Water spots on dishes are caused by minerals in the water left behind when water evaporates. To prevent this, use a rinsing agent in your dishwasher, which improves the sheeting action of water and helps to prevent spotting.

Also, be sure to use the proper amount of dishwashing detergent. Using too little may not get your dishes clean, and using too much can cause etching (which is tiny scratches on the surface of the glass that cannot be removed).

The optimal amount of detergent depends on the hardness of water (amount of minerals in the water). Our water's hardness level is about 58.4 ppm, or 3.4 gpg. Check your dishwasher's manual for the recommended amount of detergent to use.

9. My water tastes / smells funny. Does this mean it's not safe to drink? What should I do?

There are a variety of factors that can impact the taste or smell of tap water but not change the quality of the water. In Charleston Water's case, algae in our surface water, when put through the treatment process, can give off harmless compounds that may cause the water to taste “earthy” or “musty.” In most cases, taste and odor are purely aesthetic concerns, and are not reliable indicators of water quality.

10. Should I be concerned about Cryptosporidium or Giardia?

No. We monitor our source water for both, and there is a very low occurrence of these pathogenic organisms.

In addition, our treatment plant has multiple barriers of protection, such as enhanced chemical coagulation, filtration, disinfection, and careful monitoring of turbidity to ensure the optimum removal of these organisms. However, for people with compromised immune systems, the EPA and CDC offer the following advisory statement:

"Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with HIV/AIDS or other immune system disorders, persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, some elderly and some infants can be particularly at risk from infections.

These people should seek advice from their health care providers. EPA/CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline at 1-800-426-4791."

11. Should I be concerned about the sodium level of Charleston Water System water?

No. Our water has a very low sodium level (10mg/1 or less). This is substantially lower than most well water supplies and many bottled water brands.

12. Sometimes my water has a milky white appearance, why?

This is caused by air dissolved in water. Let the water stand in a glass, and the air bubbles will rise to the top and the water will become clear.

13. What is a Boil Water Advisory?

If the public water system becomes contaminated or a situation allows the possibility of contamination (such as a water main break or loss of system pressure), we will issue a Boil Water Advisory.

The SC Department of Health and Environmental Control (SCDHEC) requires the issuance of a Boil Water Advisory under certain conditions, such as widespread loss of system pressure or a large water main break.

If an advisory is issued, we will notify customers in a variety of ways, depending on the area affected. During an advisory, customers should bring water to a vigorous boil for at least one minute and let it cool before using for cooking or drinking. This will kill any bacteria that may be in the water.

Learn more about boil water advisories

14. What is the pH of Charleston's water?

The pH of water is a measure of the water's acidity on a scale of 0 (acidic) to 14 (basic), with a pH of 7 being neutral. The pH of Charleston's water is adjusted to around 8.3. This helps stabilize the disinfectant and to reduce the corrosion of pipes and plumbing materials.

15. What is hardness and how hard is Charleston's water?

Water hardness is a measure of dissolved minerals in water, specifically calcium and magnesium. Soft water has little or no dissolved minerals. Hard water has higher mineral content that can cause scaling in plumbing and soap scum residue in bathrooms.

Charleston Water System has moderately soft water. Our lab measures hardness in parts per million (ppm), but it can also be expressed in grains per gallon (gpg). The average hardness level of our water is 58.4 ppm, or 3.4 gpg, as shown in this chart.

Some dishwashers and washing machines have hardness-related settings or recommend how much detergent to use based on your water's hardness.

16. Where does Charleston Water System water come from?

We treat water from the Edisto River and the Bushy Park Reservoir, both of which are surface water sources. The water is treated at our Hanahan Water Treatment Plant, which is permitted to treat up to 115.4 million gallons per day (mgd).

17. Why does my water sometimes appear rusty?

Discolored water can sometimes occur as a result of fire hydrant testing, valve testing, or work on a nearby water main.

A change in the direction or velocity of water flow water can cause the iron compounds that accumulate in water mains to become suspended in the water, resulting in a discolored appearance.

Typically, our crews will open a nearby fire hydrant to flush out this discolored water before it reaches customers' taps. If you experience discolored water, flush your plumbing by turning on a faucet until the water runs clear. If it persists, call us at (843) 727-6800.