Public water system record
Charleston Water System
Serves Charleston, North Charleston, Hollywood and 5 more places, Charleston County and Berkeley County, SC · 327,422 people served
Federal records show no health-based violations and no monitoring or reporting issues for Charleston Water System in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Charleston Water System draws water from 2 surface water intakes.
- Record on file since 1983, with 5 health-based violations before October 19, 2016.
- Lead pipe inventory: 6,504 lead and 65,064 unknown out of 134,896 service lines.
Check whether Charleston Water System serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016, and no monitoring or reporting violations either.
Full record since 1983
EPA's records for Charleston Water System go back to 1983. Before October 19, 2016 they list 5 health-based violations (5 archived by EPA without a recorded fix) and 10 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 5 | 0 |
| 1990s | 0 | 8 |
| 2000s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began July 1984, Archived.
Show all 5 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jul 12, 1984 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jul 1, 1984 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Apr 1, 1984 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jan 1, 1984 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 1983 | Archived |
Where the water comes from
Charleston Water System draws water from 2 surface water intakes. 11 other community water systems and 16 smaller public systems such as schools, businesses or campgrounds buy water from Charleston Water System.
Community systems that buy water from it
- Bcwsa Sangaree W/D Moncks Corner, SC
- Bcwsa Sineath MHP Moncks Corner, SC
- City of Folly Beach Folly Beach, SC
- City of Goose Creek Goose Creek, SC
- DCWS Ashley Phosphate Summerville, SC
- DCWS Southern Palms Summerville, SC
- Isle of Palms W/S Comm Isle of Palms, SC
- Mt Pleasant Water Works Mount Pleasant, SC
- St John's Water Johns Island, SC
- Town of Lincolnville Lincolnville, SC
- Town of Sullivans Island Sullivans Island, SC
Annual water quality report
Charleston Water System must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by South Carolina.
Certified drinking water labs by state EPA guidance for private wells