What was found in ZIP 03103
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 |
|---|---|---|---|
| Copper | 5500 µg/L 423% of the EPA limit, in the worst sample — 1300 µg/L | 3/3 | SYR4 |
| Fluoride | 710 µg/L 18% of the EPA limit 4000 µg/L | 1/3 | SYR4 |
| Nitrate | 220 µg/L 2.2% of the EPA limit 10000 µg/L | 1/3 | SYR4 |
| Lead | 49.2 µg/L 328% of the EPA limit, in the worst sample — 15 µg/L | 3/3 | SYR4 |
| TTHM | 26 µg/L 33% of the EPA limit 80 µg/L | 3/3 | SYR4 |
| Chloroform | 20 µg/L No EPA limit set | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 20 µg/L 33% of the EPA limit 60 µg/L | 3/3 | SYR4 |
| Barium | 16.5813 µg/L 0.8% of the EPA limit 2000 µg/L | 1/3 | SYR4 |
| Monochloroacetic Acid | 15 µg/L No EPA limit set | 2/3 | SYR4 |
| Dichloroacetic Acid | 11 µg/L No EPA limit set | 3/3 | SYR4 |
| Trichloroacetic Acid | 8 µg/L No EPA limit set | 3/3 | SYR4 |
| Bromodichloromethane | 5.6 µg/L No EPA limit set | 3/3 | SYR4 |
| Gross Beta Particle Activity | 1.7 pCi/L No EPA limit set | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.6 pCi/L 32% of the EPA limit 5 pCi/L | 1/3 | SYR4 |
| Dibromoacetic Acid | 1.4 µg/L No EPA limit set | 1/3 | SYR4 |
| Dibromochloromethane | 1.1 µg/L No EPA limit set | 3/3 | SYR4 |
| PFOA | 0.0064 µg/L No EPA limit set | 3/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 2/3 | 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 03103
| Supplier | State | Population served |
|---|---|---|
| MANCHESTER WATER WORKS | NH | 123,500 |
| LONDONDERRY | NH | 6,255 |
| LITTLE POND ESTATES | NH | 3,000 |
Frequently asked questions about ZIP 03103 tap water
Is the tap water in ZIP 03103 safe to drink?
EPA testing detected 18 contaminants across the water suppliers serving ZIP 03103. 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 03103?
3 public water suppliers report EPA drinking-water monitoring for ZIP 03103. Each is listed above with its population served.
What contaminants are in ZIP 03103's water?
EPA monitoring detected Copper, Fluoride, Nitrate, Lead, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.