B71/100
ST JOHN'S WATER (SC1020002) — Water Quality Report 2026
Serving 22,592 people · South Carolina
Water Source
Purchased Surface Water
County
—
System ID
SC1020002
Violations
6
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.007 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.005 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2015.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About ST JOHN'S WATER (SC1020002)
Is ST JOHN'S WATER (SC1020002) water safe to drink?
ST JOHN'S WATER (SC1020002) water receives a grade of B (71/100), which is considered good. Out of 69 contaminants tested, 2 exceed EPA legal limits. 3 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ST JOHN'S WATER (SC1020002) detected?
69 contaminants were tested in ST JOHN'S WATER (SC1020002)'s water. Notable contaminants include PFOS, PFOA, Lead (90th percentile). 2 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does ST JOHN'S WATER (SC1020002) have any EPA violations?
Yes, ST JOHN'S WATER (SC1020002) has 6 EPA violation(s) on record, with the most recent in 2015. Violation types include MR, MCL. 1 are health-based violations.
How many people does ST JOHN'S WATER (SC1020002) serve?
ST JOHN'S WATER (SC1020002) serves approximately 22,592 people, South Carolina. The system provides water to 1 community: Johns Island (Sta.).
What type of water does ST JOHN'S WATER (SC1020002) provide?
ST JOHN'S WATER (SC1020002) sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is SC1020002.
How does ST JOHN'S WATER (SC1020002) compare to other utilities in South Carolina?
ST JOHN'S WATER (SC1020002) scores 71/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our South Carolina state page for a full comparison of water systems.