Public water system record
St John's Water
Serves an area of Charleston County, SC that includes Charleston · 22,592 people served
Federal records show no health-based violations and no monitoring or reporting issues for St John's Water 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
- St John's Water buys its water from Charleston Water System.
- Most recent formal enforcement: compliance order (no penalty) by EPA, July 1993.
- Record on file since 1991, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 1,821 service lines.
Check whether St John's Water 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 1991
EPA's records for St John's Water go back to 1991. Before October 19, 2016 they list 1 health-based violation (1 archived by EPA without a recorded fix) and 5 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 4 |
| 2010 to October 18, 2016 | 0 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began August 1991, Archived.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1991 | Archived |
Enforcement actions
EPA took 1 formal enforcement action against St John's Water in 1993. The most recent was a compliance order (no penalty) in July 1993.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jul 29, 1993 | EPA | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
Where the water comes from
St John's Water buys its water from Charleston Water System. It lists no wells or intakes of its own. 2 other community water systems buy water from St John's Water.
Buys water from
- Charleston Water System Charleston, SC
Community systems that buy water from it
- Kiawah Island Utility Kiawah Island, SC
- Town of Seabrook Island Johns Island, SC
Annual water quality report
St John's Water 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