What was found in Princeton's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 1035 µg/L 26% of the EPA limit 4000 µg/L Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 2/2 | SYR4 |
| Nitrate | 650 µg/L 6.5% of the EPA limit 10000 µg/L Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 2/2 | SYR4 |
| Copper | 155 µg/L 12% of the EPA limit 1300 µg/L Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019
Highest in the city: 530.2 µg/L — GREEN VALLEY GLENWOOD PSD BULLTAIL · 2,130 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 354.5 µg/L 3.5% of the EPA limit 10000 µg/L Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 2/2 | SYR4 |
| Barium | 105.52 µg/L 5.3% of the EPA limit 2000 µg/L Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019
Highest in the city: 183.435 µg/L — GREEN VALLEY GLENWOOD PSD BULLTAIL · 2,130 people · 2019 | 2/2 | SYR4 |
| TTHM | 108.5 µg/L 136% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 2/2 | SYR4 |
| Chloroform | 89.48 µg/L No EPA limit set Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 83.28 µg/L 139% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 2/2 | SYR4 |
| Lead | 15.26 µg/L 102% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019
Highest in the city: 65.8 µg/L — GREEN VALLEY GLENWOOD PSD BULLTAIL · 2,130 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 45.89 µg/L No EPA limit set Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 37.4 µg/L No EPA limit set Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 2/2 | SYR4 |
| Cyanide | 23 µg/L 12% of the EPA limit 200 µg/L Highest in the city: GREEN VALLEY GLENWOOD PSD BULLTAIL · 2,130 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 14.36 µg/L No EPA limit set Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 6.51 µg/L No EPA limit set Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019
Highest in the city: 13.955 µg/L — GREEN VALLEY GLENWOOD PSD BULLTAIL · 2,130 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1.7865 µg/L No EPA limit set Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019
Highest in the city: 5.638 µg/L — GREEN VALLEY GLENWOOD PSD BULLTAIL · 2,130 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 2.768 µg/L No EPA limit set Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 2/2 | SYR4 |
| Chromium | 2.2 µg/L 2.2% of the EPA limit 100 µg/L Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 1/2 | SYR4 |
| Toluene | 1.33 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: GREEN VALLEY GLENWOOD PSD BULLTAIL · 2,130 people · 2019 | 1/2 | SYR4 |
| Selenium | 1.1 µg/L 2.2% of the EPA limit 50 µg/L Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.095 µg/L No EPA limit set Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 1/2 | SYR4 |
| P-Dichlorobenzene | 0.3100 µg/L 0.4% of the EPA limit 75 µg/L Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0046 mg/L 31% of the EPA limit 0.0150 mg/L Main supplier: GREEN VALLEY GLENWOOD PSD GLENWOOD · 4,914 people · 2025
Highest in the city: 0.0072 mg/L — GREEN VALLEY GLENWOOD PSD BULLTAIL · 2,130 people · 2025 | 2/2 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Princeton
| Supplier | Population served |
|---|---|
| GREEN VALLEY GLENWOOD PSD GLENWOOD | 4,914 |
| GREEN VALLEY GLENWOOD PSD BULLTAIL | 2,130 |
Frequently asked questions about Princeton tap water
Is Princeton tap water safe to drink?
EPA testing detected 22 contaminants in the water serving Princeton. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Princeton?
2 public water suppliers report drinking-water monitoring for Princeton, West Virginia to the EPA. Each is listed above with its population served.
What contaminants are in Princeton's water?
The contaminants EPA monitoring detected in Princeton include Fluoride, Nitrate, Copper, Nitrate-Nitrite, Barium. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.