What was found in ZIP 20187
The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 3930 µg/L 39% of the EPA limit 10000 µg/L | 2/2 | SYR4 |
| Copper | 1400 µg/L 108% of the EPA limit, in the worst sample — 1300 µg/L | 2/2 | SYR4 |
| Fluoride | 1020 µg/L 26% of the EPA limit 4000 µg/L | 2/2 | SYR4 |
| Barium | 196 µg/L 9.8% of the EPA limit 2000 µg/L | 2/2 | SYR4 |
| TTHM | 149 µg/L 186% of the EPA limit, in the worst sample — 80 µg/L | 2/2 | SYR4 |
| Chloroform | 129 µg/L No EPA limit set | 2/2 | SYR4 |
| Lead | 83.5 µg/L 557% of the EPA limit, in the worst sample — 15 µg/L | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 50 µg/L 83% of the EPA limit 60 µg/L | 2/2 | SYR4 |
| Lithium | 34.8 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Trichloroacetic Acid | 33 µg/L No EPA limit set | 2/2 | SYR4 |
| Dichloroacetic Acid | 19 µg/L No EPA limit set | 2/2 | SYR4 |
| Bromodichloromethane | 17 µg/L No EPA limit set | 2/2 | SYR4 |
| Gross Beta Particle Activity | 10.6 pCi/L No EPA limit set | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 8.5 pCi/L 170% of the EPA limit, in the worst sample — 5 pCi/L | 2/2 | SYR4 |
| Dibromochloromethane | 6.2 µg/L No EPA limit set | 2/2 | SYR4 |
| Arsenic | 4 µg/L 40% of the EPA limit 10 µg/L | 1/2 | SYR4 |
| Monochloroacetic Acid | 3.2 µg/L No EPA limit set | 1/2 | SYR4 |
| Dibromoacetic Acid | 2.1 µg/L No EPA limit set | 1/2 | SYR4 |
| Toluene | 2.1 µg/L 0.2% of the EPA limit 1000 µg/L | 1/2 | SYR4 |
| Bromoform | 1 µg/L No EPA limit set | 2/2 | SYR4 |
| Combined Uranium | 0.2600 µg/L 0.9% of the EPA limit 30 µg/L | 1/2 | SYR4 |
| Heptachlor Epoxide | 0.1800 µg/L 90% of the EPA limit 0.2000 µg/L | 1/2 | SYR4 |
| PFOS | 0.0120 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Pfpea | 0.0110 µg/L No EPA limit set | 2/2 | UCMR-5 |
| Pfhxa | 0.0082 µg/L No EPA limit set | 1/2 | UCMR-5 |
| PFHXS | 0.0062 µg/L No EPA limit set | 1/2 | UCMR-5 |
| PFBS | 0.0056 µg/L No EPA limit set | 1/2 | UCMR-5 |
| PFOA | 0.0049 µg/L No EPA limit set | 2/2 | UCMR-5 |
| Lead | 0.0027 mg/L 18% of the EPA limit 0.0150 mg/L | 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 single worst sample on
record — over 100% is worth reading, but is not by itself a violation.
Formal violations are listed separately.
Water suppliers serving ZIP 20187
| Supplier | State | Population served |
|---|---|---|
| WARRENTON, TOWN OF | VA | 11,801 |
| NEW BALTIMORE REGIONAL | VA | 8,818 |
Frequently asked questions about ZIP 20187 tap water
Is the tap water in ZIP 20187 safe to drink?
EPA testing detected 29 contaminants across the water suppliers serving ZIP 20187. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 20187?
2 public water suppliers report EPA drinking-water monitoring for ZIP 20187. Each is listed above with its population served.
What contaminants are in ZIP 20187's water?
EPA monitoring detected Nitrate-Nitrite, Copper, Fluoride, Barium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.