Is DCWA KNIGHTSVILLE (SC1820001) Water Safe to Drink in 2026?
South Carolina · PWSID SC1820001 · Surface water
Population served
40,141
Cities served
SUMMERVILLE
State / jurisdiction
South Carolina (SC)
PWSID
SC1820001
F
TAP WATER GRADE
High risk
Model score 0/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
20 violation record(s) in the latest EPA SDWA quarterly snapshotPFAS above EPA MCL (UCMR5 regulated compounds)
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CONTAMINANTS — EPA UCMR5 MONITORING
Compound
Level (ppt)
EPA limit
Health guideline
Status
PFOSregulated
8.1
4 ppt
Exceeds
Above health advisory
PFPeA
7.2
—
Within / n/a
Unregulated (monitored)
PFOAregulated
6.5
4 ppt
Exceeds
Above health advisory
PFHxA
6.2
—
Within / n/a
Unregulated (monitored)
PFBA
5.0
—
Within / n/a
Unregulated (monitored)
PFBS
4.6
—
Within / n/a
Unregulated (monitored)
PFHpA
3.0
—
Within / n/a
Unregulated (monitored)
Source: EPA UCMR5 · ppt = parts per trillion · MCL = enforceable limit for regulated PFAS
VIOLATIONS HISTORY (FEDERAL SNAPSHOT)
EPA’s national SDWA quarterly files associate 20 violation-related records with this system in the same reporting quarter as the utility snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.
Based on DCWA KNIGHTSVILLE (SC1820001)'s monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.
TOP PICKS FOR DCWA KNIGHTSVILLE (SC1820001)
⚠ EPA violations / contaminants in monitoring data
WHY THIS FOR DCWA KNIGHTSVILLE (SC1820001) · Chosen for DCWA KNIGHTSVILLE (SC1820001) because PFAS was detected at 8.1 ppt in UCMR5 — above the 4 ppt limit for some regulated compounds — and this system shows 20 violation record(s) in the latest federal snapshot. RO removes 99%+ of PFAS at the tap.
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