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 | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-04-01 → 2019-06-30 |
| MCL | Health-based | Resolved | 2019-04-01 → 2019-06-30 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 280 µg/L 22% of the EPA limit 1300 µg/L
worst single sample: 2700 µg/L | 252/257 | SYR4 | 2014–2019 |
| Bromodichloromethane | 29.05 µg/L No EPA limit set
worst single sample: 35 µg/L | 100/101 | SYR4 | 2014–2019 |
| Chloroform | 121 µg/L No EPA limit set
worst single sample: 170 µg/L | 100/101 | SYR4 | 2014–2019 |
| Dibromochloromethane | 7.11 µg/L No EPA limit set
worst single sample: 11 µg/L | 100/101 | SYR4 | 2014–2019 |
| Dichloroacetic Acid | 25 µg/L No EPA limit set
worst single sample: 41 µg/L | 84/84 | SYR4 | 2014–2019 |
| TTHM | 161.475 µg/L 202% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 205.2 µg/L | 84/84 | SYR4 | 2014–2019 |
| Total Haloacetic Acids (HAA5) | 64.7 µg/L 108% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 98 µg/L | 84/84 | SYR4 | 2014–2019 |
| Trichloroacetic Acid | 40 µg/L No EPA limit set
worst single sample: 57 µg/L | 84/84 | SYR4 | 2014–2019 |
| Lead | 42.8 µg/L 285% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 130 µg/L | 53/248 | SYR4 | 2016–2019 |
| Dibromoacetic Acid | 1.855 µg/L No EPA limit set
worst single sample: 1.9 µg/L | 30/84 | SYR4 | 2014–2019 |
| Arsenic | 10 µg/L 100% of the EPA limit 10 µg/L
worst single sample: 11 µg/L | 26/32 | SYR4 | 2014–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 26/26 | LCR | 2024 |
| Barium | 13 µg/L 0.7% of the EPA limit 2000 µg/L | 9/9 | SYR4 | 2014–2019 |
| Monobromoacetic Acid | 2.695 µg/L No EPA limit set
worst single sample: 2.8 µg/L | 8/84 | SYR4 | 2014–2019 |
| Combined Radium (-226 And -228) | 1.51 pCi/L 30% of the EPA limit 5 pCi/L
worst single sample: 1.6 pCi/L | 7/7 | SYR4 | 2015–2016 |
| Combined Uranium | 0.4000 µg/L 1.3% of the EPA limit 30 µg/L | 6/7 | SYR4 | 2015–2016 |
| Gross Alpha, Excl. Radon And U | 2.88 pCi/L 19% of the EPA limit 15 pCi/L
worst single sample: 3.3 pCi/L | 5/7 | SYR4 | 2015–2016 |
| cis-1,2-Dichloroethylene | 0.7780 µg/L 1.1% of the EPA limit 70 µg/L
worst single sample: 0.8000 µg/L | 5/22 | SYR4 | 2014–2019 |
| Nitrate | 550 µg/L 5.5% of the EPA limit 10000 µg/L | 4/24 | SYR4 | 2014–2019 |
| Fluoride | 166 µg/L 4.2% of the EPA limit 4000 µg/L
worst single sample: 170 µg/L | 3/9 | SYR4 | 2014–2019 |
| Monochloroacetic Acid | 3.97 µg/L No EPA limit set
worst single sample: 4.1 µg/L | 3/84 | SYR4 | 2014–2019 |
| Bromoform | 0.7000 µg/L No EPA limit set | 1/101 | SYR4 | 2014–2019 |
| Xylenes, Total | 0.5000 µg/L 0% of the EPA limit 10000 µg/L | 1/17 | SYR4 | 2014–2019 |
77 contaminants tested, none detected
Utility contact
Frequently asked questions about Exeter Water Dept
Is Exeter Water Dept tap water safe to drink?
EPA monitoring detected 30 contaminants in Exeter Water Dept'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 Exeter Water Dept's water?
EPA monitoring detected Copper, Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Exeter Water Dept serve?
Exeter Water Dept reports serving 12,236 people in New Hampshire, per its EPA record.
Has Exeter Water Dept had any water quality violations?
The EPA has 271 violations on file for Exeter Water Dept, of which 181 are health-based (a contaminant limit or required treatment was breached) and 1 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.