Drinking water quality · 2025
· Verified
· PWSID VA1105055
What's in James City County, VA tap water
1 contaminant in James City County, VA's water sat at or above a federal limit, led by Chlorine at 1.4x the limit.
- !1 contaminant at or above a federal limit — worst is Chlorine at 1.4x
- !1 contaminant within 20% of a limit
- !22 of 27 core regulated contaminants reported — 5 never appear in this report
- ✓No open federal violations
+How this score is calculated
Every system starts at 100. Points come off for measured levels, for the federal violation record, and for how much of the core regulated set the utility actually reported. All three inputs are the utility's own published numbers and EPA's own records.
- −17 contaminants at or above a federal limit
- −4 contaminants within 20% of a limit
- −0 open health-based violations
- −0 open monitoring / reporting violations
- −0 health-based violations resolved in the last 5 years
- −0 core regulated contaminants never reported (22/27)
A 90–100 · B 80–89 · C 70–79 · D 60–69 · F below 60. A system reporting under a third of the core set is capped at C however clean its numbers look — a short report is not a clean bill of health.
Full grading methodology, constant for constant →What to worry about
- Chlorine1.4× the federal limit0–5.4 mg/L · limit 4 mg/L
Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.
higher than 95% of U.S. systems
- PFOA83% of the federal limit3.3 ng/L · limit 4 ng/L
Linked to cancer, liver damage, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.
higher than 35% of U.S. systems
+40 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| HAA5 | 5–32 ug/L | 60 ug/L |
| TTHM | 40 ug/L | 80 ug/L |
| Fluoride | 0.77 mg/L | 4 mg/L |
| Combined Radium | 0.6 pCi/L | 5 pCi/L |
| Turbidity | 0.105 NTU | 1 NTU |
| Gross Alpha | 0.6 pCi/L | 15 pCi/L |
| Chromium | 1.5 ug/L | 100 ug/L |
| Barium | 0.026 mg/L | 2 mg/L |
| Nitrate | 0.065 mg/L | 10 mg/L |
| Nitrite | 0.002–0.003 mg/L | 1 mg/L |
| Bromate | Not detected ug/L | 10 ug/L |
| Bromoform | Not detected ug/L | — |
| Chloroform | 3 ug/L | — |
| Dibromochloromethane | Not detected ug/L | — |
| Cyanide | Not detected mg/L | 0.2 mg/L |
| Antimony | Not detected ug/L | 6 ug/L |
| Arsenic | Not detected ug/L | 10 ug/L |
| Beryllium | Not detected ug/L | 4 ug/L |
| Cadmium | Not detected ug/L | 5 ug/L |
| Copper | 0.053 % | 1.3 % |
| Lead | Not detected % | — |
| Mercury | Not detected ug/L | 2 ug/L |
| Selenium | Not detected ug/L | 50 ug/L |
| Thallium | Not detected ug/L | 2 ug/L |
| Escherichia coli (E. coli) | 0 % | 0 % |
| Total Coliform | 0 % | 0 % |
| Carbon Tetrachloride | Not detected ug/L | 5 ug/L |
| Chlorobenzene | Not detected ug/L | 100 ug/L |
| O Dichlorobenzene | Not detected ug/L | 600 ug/L |
| P Dichlorobenzene | Not detected ug/L | 75 ug/L |
| Pce | Not detected ug/L | 5 ug/L |
| Styrene | Not detected ug/L | 100 ug/L |
| Tce | Not detected ug/L | 5 ug/L |
| Vinyl Chloride | Not detected ug/L | 2 ug/L |
| PFBA | 3.8 ng/L | — |
| TOC | 0.53–1.82 | — |
| Benzene | Not detected ug/L | 5 ug/L |
| Dichloromethane | Not detected ug/L | 5 ug/L |
| Ethylbenzene | Not detected ug/L | 700 ug/L |
| Toluene | Not detected ug/L | 1000 ug/L |
What this report doesn't tell you
5 of the 27 contaminants a community water system normally reports do not appear anywhere in James City County, VA's data. Absent is not the same as absent-from-the-water — it means nobody published a number.
+Full detail: PFAS testing, water source, historical monitoring, and the federal violation record
Where your water comes from · EPA SDWIS
James City County, VA buys its drinking water from DUFFIELD_SCOTT CO PSA.
Source
Treatment
Distribution
Also buys water from DUFFIELD_SCOTT CO PSA.
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.
- Maximum contaminant level exceededHealth-based4 violations on record · most recent Jan 2017resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗