B65/100
DCWA KNIGHTSVILLE (1820001) — Water Quality Report 2026
Serving 40,141 people · South Carolina
Water Source
Purchased Surface Water
County
—
System ID
SC1820001
Violations
4
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.008 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.006 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2010.
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 DCWA KNIGHTSVILLE (1820001)
Is DCWA KNIGHTSVILLE (1820001) water safe to drink?
DCWA KNIGHTSVILLE (1820001) water receives a grade of B (65/100), 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 DCWA KNIGHTSVILLE (1820001) detected?
69 contaminants were tested in DCWA KNIGHTSVILLE (1820001)'s water. Notable contaminants include PFOS, PFOA, Lead (90th percentile). 2 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does DCWA KNIGHTSVILLE (1820001) have any EPA violations?
Yes, DCWA KNIGHTSVILLE (1820001) has 4 EPA violation(s) on record, with the most recent in 2010. Violation types include MCL, MR. 3 are health-based violations.
How many people does DCWA KNIGHTSVILLE (1820001) serve?
DCWA KNIGHTSVILLE (1820001) serves approximately 40,141 people, South Carolina. The system provides water to 1 community: Summerville.
What type of water does DCWA KNIGHTSVILLE (1820001) provide?
DCWA KNIGHTSVILLE (1820001) 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 SC1820001.
How does DCWA KNIGHTSVILLE (1820001) compare to other utilities in South Carolina?
DCWA KNIGHTSVILLE (1820001) scores 65/100 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.