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 | 2005-10-01 → 2005-10-31 |
| MCL | Health-based | Resolved | 2005-10-01 → 2005-10-31 |
| MCL | Health-based | Archived | 2002-07-01 → 2002-07-31 |
| MCL | Health-based | Archived | 1999-09-01 → 1999-09-30 |
| MCL | Health-based | Archived | 1998-09-01 → 1998-09-30 |
| MCL | Health-based | Archived | 1998-08-01 → 1998-08-31 |
| MCL | Health-based | Resolved | 1996-10-01 → 1996-10-31 |
| Other | Monitoring | Resolved | 2012-07-01 |
| Other | Monitoring | Resolved | 2012-07-01 |
| MR | Monitoring | Resolved | 2006-10-01 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 2090 µg/L 21% of the EPA limit 10000 µg/L
worst single sample: 2520 µg/L | 166/168 | SYR4 | 2012–2019 |
| TTHM | 40.7 µg/L 51% of the EPA limit 80 µg/L
worst single sample: 63 µg/L | 164/164 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 21.5 µg/L 36% of the EPA limit 60 µg/L
worst single sample: 37 µg/L | 156/163 | SYR4 | 2012–2019 |
| Bromodichloromethane | 11.335 µg/L No EPA limit set
worst single sample: 14.6 µg/L | 154/154 | SYR4 | 2012–2019 |
| Chloroform | 26.1 µg/L No EPA limit set
worst single sample: 51.3 µg/L | 154/154 | SYR4 | 2012–2019 |
| Dibromochloromethane | 8.34 µg/L No EPA limit set
worst single sample: 11.6 µg/L | 154/154 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 12.95 µg/L No EPA limit set
worst single sample: 24.2 µg/L | 130/153 | SYR4 | 2012–2019 |
| Bromoform | 2.2 µg/L No EPA limit set
worst single sample: 5.4 µg/L | 101/154 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 9.67 µg/L No EPA limit set
worst single sample: 14 µg/L | 84/153 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.83 µg/L No EPA limit set
worst single sample: 3.8 µg/L | 75/153 | SYR4 | 2012–2019 |
| Copper | 220 µg/L 17% of the EPA limit 1300 µg/L
worst single sample: 1850 µg/L | 40/76 | SYR4 | 2012–2019 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L | 21/21 | LCR | 2025 |
| Monochloroacetic Acid | 7.85 µg/L No EPA limit set
worst single sample: 8 µg/L | 11/153 | SYR4 | 2012–2019 |
82 contaminants tested, none detected
Utility contact
Frequently asked questions about Middleborough Water Supply
Is Middleborough Water Supply tap water safe to drink?
EPA monitoring detected 21 contaminants in Middleborough Water Supply'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 Middleborough Water Supply's water?
EPA monitoring detected Nitrate, TTHM, Total Haloacetic Acids (HAA5), Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Middleborough Water Supply serve?
Middleborough Water Supply reports serving 15,350 people in Massachusetts, per its EPA record.
Has Middleborough Water Supply had any water quality violations?
The EPA has 21 violations on file for Middleborough Water Supply, of which 7 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.