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

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1. Can I get my bill adjusted if I had a leak?
2. Can I get a discount on my sewer bill when I fill my pool?
3. Can I sign up for automatic recurring payments using my credit card?
4. How is my sewer bill calculated?
5. How is my water bill calculated?
6. Why is there a charge for the storm water fee on my water bill?
7. Why do water and sewer rates keep going up?
8. Why am I charged a minimum bill even if I don't use any water?
9. What is an irrigation account?
10. Does Charleston Water System bill for other sewer utilities?
11. What is Automated Meter Reading (AMR)?
12. What is my billing cycle?
13. What is the sewer cap?
14. Why is my bill higher than usual?
15. Will I be charged for sewer while my home is under construction?