Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2018-07-01 → 2018-09-30 |
| MCL | Health-based | Resolved | 2018-07-01 → 2018-09-30 |
| MCL | Health-based | Resolved | 2018-07-01 → 2018-09-30 |
| MCL | Health-based | Resolved | 2018-07-01 → 2018-09-30 |
| MCL | Health-based | Resolved | 2018-04-01 → 2018-06-30 |
| MCL | Health-based | Resolved | 2018-04-01 → 2018-06-30 |
| MCL | Health-based | Resolved | 2018-04-01 → 2018-06-30 |
| MCL | Health-based | Resolved | 2018-04-01 → 2018-06-30 |
| MCL | Health-based | Resolved | 2018-01-01 → 2018-03-31 |
| MCL | Health-based | Resolved | 2018-01-01 → 2018-03-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 110 µg/L 138% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 143 µg/L | 44/44 | SYR4 | 2014–2019 |
| Total Haloacetic Acids (HAA5) | 57.19 µg/L 95% of the EPA limit 60 µg/L
worst single sample: 71 µg/L | 44/44 | SYR4 | 2014–2019 |
| Bromodichloromethane | 14.95 µg/L No EPA limit set
worst single sample: 15 µg/L | 42/42 | SYR4 | 2014–2019 |
| Chloroform | 94 µg/L No EPA limit set
worst single sample: 126 µg/L | 42/42 | SYR4 | 2014–2019 |
| Trichloroacetic Acid | 40.2305 µg/L No EPA limit set
worst single sample: 49 µg/L | 42/42 | SYR4 | 2014–2019 |
| Dichloroacetic Acid | 26 µg/L No EPA limit set
worst single sample: 27 µg/L | 41/42 | SYR4 | 2014–2019 |
| Dibromochloromethane | 2.46 µg/L No EPA limit set
worst single sample: 3 µg/L | 38/42 | SYR4 | 2014–2019 |
| Copper | 139.2 µg/L 11% of the EPA limit 1300 µg/L
worst single sample: 999 µg/L | 34/34 | SYR4 | 2018–2019 |
| Lead | 0.0170 mg/L 113% above the EPA limit of 0.0150 mg/L | 5/5 | LCR | 2007 |
| Lead | 12.96 µg/L 86% of the EPA limit 15 µg/L
worst single sample: 14.4 µg/L | 5/34 | SYR4 | 2018–2019 |
| Monochloroacetic Acid | 2.4 µg/L No EPA limit set | 1/42 | SYR4 | 2014–2019 |
3 contaminants tested, none detected
Utility contact
Frequently asked questions about New Castle Water Works
Is New Castle Water Works tap water safe to drink?
EPA monitoring detected 11 contaminants in New Castle Water Works's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in New Castle Water Works's water?
EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Bromodichloromethane, Chloroform, Trichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does New Castle Water Works serve?
New Castle Water Works reports serving 910 people in New Hampshire, per its EPA record.
Has New Castle Water Works had any water quality violations?
The EPA has 115 violations on file for New Castle Water Works, of which 83 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
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.