Charleston Water System allows tanker trucks, contractors, and other permitted users to use designated fire hydrants as a temporary water supply. Temporary hydrant use permits are issued based on the following types of use:

• Non transient—Use of a single hydrant to supply water for a construction site.
• Transient—Use of any of CWS's designated hydrants to fill tanker trucks.

Transient users must meet our backflow prevention requirements and have a backflow inspection before a permit will be issued. For non transient users, CWS will install the hose and backflow prevention assembly on the hydrant. For more information, refer to CWS's Transient and Non-Transient Hydrant Usage Policy.

To apply for a permit, please complete the Transient Permit Application Form or the Non Transient Permit Application Form included in the policy or call our Customer Service Department at 843-727-6800 (press 3 on the main menu).

A list of hydrants designated for transient use is available here. 
 
Fees For Temporary Hydrant Use
Non Transient Temporary Water Use

Connection	Duration	Fee
3/4"	7 days or less	$140
1.5"	7 days or less	$350
3/4"	7 - 90 days	$350
1.5"	7 - 90 days	$700
3/4"	1 month extension	$140
1.5"	1 month extension	$280

Transient Temporary Water Use

Class	Tank Capacity (in gallons)	Annual Fee
Class 1	3,000 or more	$2,000
Class 2	2,000 - 2,999	$1,500
Class 3	1,000 - 1,999	$1,000
Class 4	501 - 999	$750
Class 5	500 or less	$500