What was found in ZIP 03870
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 | 7500 µg/L 75% of the EPA limit 10000 µg/L | 3/3 | SYR4 |
| Nitrate-Nitrite | 7500 µg/L 75% of the EPA limit 10000 µg/L | 2/3 | SYR4 |
| Copper | 1300 µg/L 100% of the EPA limit 1300 µg/L | 3/3 | SYR4 |
| Fluoride | 560 µg/L 14% of the EPA limit 4000 µg/L | 3/3 | SYR4 |
| Lead | 460 µg/L 3067% of the EPA limit, in the worst sample — 15 µg/L | 3/3 | SYR4 |
| TTHM | 109 µg/L 136% of the EPA limit, in the worst sample — 80 µg/L | 2/3 | SYR4 |
| Chloroform | 94 µg/L No EPA limit set | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 75 µg/L 125% of the EPA limit, in the worst sample — 60 µg/L | 2/3 | SYR4 |
| Barium | 48.9 µg/L 2.4% of the EPA limit 2000 µg/L | 3/3 | SYR4 |
| Trichloroacetic Acid | 46 µg/L No EPA limit set | 1/3 | SYR4 |
| Dichloroacetic Acid | 28.072 µg/L No EPA limit set | 2/3 | SYR4 |
| Lithium | 24.9 µg/L No EPA limit set | 2/3 | UCMR-5 |
| Bromodichloromethane | 14 µg/L No EPA limit set | 2/3 | SYR4 |
| Dibromochloromethane | 13 µg/L No EPA limit set | 2/3 | SYR4 |
| Monochloroacetic Acid | 10.734 µg/L No EPA limit set | 1/3 | SYR4 |
| Chromium | 10.3 µg/L 10% of the EPA limit 100 µg/L | 1/3 | SYR4 |
| Arsenic | 6.5 µg/L 65% of the EPA limit 10 µg/L | 3/3 | SYR4 |
| Bromoform | 4.9 µg/L No EPA limit set | 1/3 | SYR4 |
| Dibromoacetic Acid | 3.6 µg/L No EPA limit set | 1/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.9 pCi/L 19% of the EPA limit 15 pCi/L | 2/3 | SYR4 |
| Combined Uranium | 2.2 µg/L 7.3% of the EPA limit 30 µg/L | 2/3 | SYR4 |
| Combined Radium (-226 And -228) | 2.1 pCi/L 42% of the EPA limit 5 pCi/L | 3/3 | SYR4 |
| Selenium | 1.1 µg/L 2.2% of the EPA limit 50 µg/L | 1/3 | SYR4 |
| Pfpea | 0.0251 µg/L No EPA limit set | 3/3 | UCMR-5 |
| Pfhxa | 0.0101 µg/L No EPA limit set | 3/3 | UCMR-5 |
| PFBS | 0.0090 µg/L No EPA limit set | 1/3 | UCMR-5 |
| PFOA | 0.0083 µg/L No EPA limit set | 3/3 | UCMR-5 |
| PFOS | 0.0078 µg/L No EPA limit set | 3/3 | UCMR-5 |
| Pfba | 0.0050 µg/L No EPA limit set | 2/3 | UCMR-5 |
| PFHXS | 0.0050 µg/L No EPA limit set | 1/3 | UCMR-5 |
| Pfhpa | 0.0030 µg/L No EPA limit set | 1/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 3/3 | 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 03870
| Supplier | State | Population served |
|---|---|---|
| AQUARION WATER/NH | CT | 34,000 |
| PORTSMOUTH WATER WORKS | NH | 33,000 |
| RYE WATER DIST | NH | 4,300 |
Frequently asked questions about ZIP 03870 tap water
Is the tap water in ZIP 03870 safe to drink?
EPA testing detected 32 contaminants across the water suppliers serving ZIP 03870. 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 03870?
3 public water suppliers report EPA drinking-water monitoring for ZIP 03870. Each is listed above with its population served.
What contaminants are in ZIP 03870's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Copper, Fluoride, Lead, and others across this ZIP's suppliers. The full list with levels and sources is above.