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 | 2002-08-01 → 2002-08-31 |
| MCL | Health-based | Resolved | 2002-08-01 → 2002-08-31 |
| MCL | Health-based | Resolved | 2002-08-01 → 2002-08-31 |
| MCL | Health-based | Resolved | 2002-08-01 → 2002-08-31 |
| MR | Monitoring | Resolved | 2003-01-01 → 2003-04-01 |
| MR | Monitoring | Resolved | 2003-01-01 → 2003-04-01 |
| MR | Monitoring | Resolved | 2003-01-01 → 2003-04-01 |
| MR | Monitoring | Resolved | 2003-01-01 → 2003-04-01 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 1100 µg/L 85% of the EPA limit 1300 µg/L | 254/417 | SYR4 | 2014–2019 |
| Lead | 420 µg/L 2800% of the EPA limit, in the worst sample — 15 µg/L | 43/407 | SYR4 | 2014–2019 |
| Lead | 0.0420 mg/L 280% above the EPA limit of 0.0150 mg/L | 33/33 | LCR | 2024 |
| Bromodichloromethane | 14 µg/L No EPA limit set | 28/37 | SYR4 | 2014–2019 |
| Chloroform | 60 µg/L No EPA limit set | 26/37 | SYR4 | 2014–2019 |
| Dibromochloromethane | 3.2 µg/L No EPA limit set | 26/37 | SYR4 | 2014–2019 |
| Dichloroacetic Acid | 15 µg/L No EPA limit set | 22/22 | SYR4 | 2016–2019 |
| TTHM | 76.2 µg/L 95% of the EPA limit 80 µg/L | 22/22 | SYR4 | 2016–2019 |
| Total Haloacetic Acids (HAA5) | 42 µg/L 70% of the EPA limit 60 µg/L | 22/22 | SYR4 | 2016–2019 |
| Trichloroacetic Acid | 28 µg/L No EPA limit set | 22/22 | SYR4 | 2016–2019 |
| Barium | 13 µg/L 0.7% of the EPA limit 2000 µg/L | 10/10 | SYR4 | 2014–2019 |
| Fluoride | 650 µg/L 16% of the EPA limit 4000 µg/L | 8/10 | SYR4 | 2014–2019 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 6/6 | SYR4 | 2016–2017 |
| Combined Uranium | 1 µg/L 3.3% of the EPA limit 30 µg/L | 5/6 | SYR4 | 2016–2017 |
| Gross Alpha, Excl. Radon And U | 2.3 pCi/L 15% of the EPA limit 15 pCi/L | 5/6 | SYR4 | 2016–2017 |
| Monobromoacetic Acid | 1.7 µg/L No EPA limit set | 4/22 | SYR4 | 2016–2019 |
| Nitrate | 1100 µg/L 11% of the EPA limit 10000 µg/L | 4/32 | SYR4 | 2014–2019 |
| Arsenic | 1.7 µg/L 17% of the EPA limit 10 µg/L | 1/10 | SYR4 | 2014–2019 |
88 contaminants tested, none detected
Utility contact
Frequently asked questions about Unh/Durham Water Sys
Is Unh/Durham Water Sys tap water safe to drink?
EPA monitoring detected 18 contaminants in Unh/Durham Water Sys'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 Unh/Durham Water Sys's water?
EPA monitoring detected Copper, Lead, Lead, Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Unh/Durham Water Sys serve?
Unh/Durham Water Sys reports serving 16,000 people in New Hampshire, per its EPA record.
Has Unh/Durham Water Sys had any water quality violations?
The EPA has 8 violations on file for Unh/Durham Water Sys, of which 4 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.