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 | 1996-01-01 → 1996-12-31 |
| MCL | Health-based | Resolved | 1996-01-01 → 1996-12-31 |
| MCL | Health-based | Resolved | 1996-01-01 → 1996-12-31 |
| MCL | Health-based | Resolved | 1996-01-01 → 1996-12-31 |
| MR | Monitoring | Resolved | 2024-01-01 → 2024-12-31 |
| MR | Monitoring | Resolved | 2024-01-01 → 2024-12-31 |
| MR | Monitoring | Resolved | 2024-01-01 → 2024-12-31 |
| MR | Monitoring | Resolved | 2024-01-01 → 2024-12-31 |
| MR | Monitoring | Resolved | 2024-01-01 → 2024-12-31 |
| MR | Monitoring | Resolved | 2024-01-01 → 2024-12-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 1520 µg/L 15% of the EPA limit 10000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 14/14 | LCR | 2025 |
| Copper | 195.5 µg/L 15% of the EPA limit 1300 µg/L
worst single sample: 200 µg/L | 10/12 | SYR4 | 2014–2017 |
| Nitrate-Nitrite | 1513 µg/L 15% of the EPA limit 10000 µg/L
worst single sample: 1520 µg/L | 8/8 | SYR4 | 2012–2019 |
| Dibromochloromethane | 1 µg/L No EPA limit set | 4/6 | SYR4 | 2012–2019 |
| Bromodichloromethane | 1 µg/L No EPA limit set | 3/6 | SYR4 | 2012–2019 |
| Bromoform | 1 µg/L No EPA limit set | 3/6 | SYR4 | 2012–2019 |
| TTHM | 2.9 µg/L 3.6% of the EPA limit 80 µg/L
worst single sample: 3 µg/L | 3/3 | SYR4 | 2017–2019 |
| Barium | 15 µg/L 0.8% of the EPA limit 2000 µg/L | 2/2 | SYR4 | 2014–2017 |
| Fluoride | 69 µg/L 1.7% of the EPA limit 4000 µg/L
worst single sample: 70 µg/L | 2/2 | SYR4 | 2014–2017 |
| Chloroform | 1 µg/L No EPA limit set | 1/6 | SYR4 | 2012–2019 |
| Chromium | 1 µg/L 1% of the EPA limit 100 µg/L | 1/2 | SYR4 | 2014–2017 |
| Combined Radium (-226 And -228) | 3.8 pCi/L 76% of the EPA limit 5 pCi/L | 1/2 | SYR4 | 2013–2019 |
67 contaminants tested, none detected
Utility contact
Frequently asked questions about Aquarion-Quarry Ridge
Is Aquarion-Quarry Ridge tap water safe to drink?
EPA monitoring detected 13 contaminants in Aquarion-Quarry Ridge'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 Aquarion-Quarry Ridge's water?
EPA monitoring detected Nitrate, Lead, Copper, Nitrate-Nitrite, Dibromochloromethane, and others. The full list with the level and data source for each is above.
How many people does Aquarion-Quarry Ridge serve?
Aquarion-Quarry Ridge reports serving 84 people in Connecticut, per its EPA record.
Has Aquarion-Quarry Ridge had any water quality violations?
The EPA has 220 violations on file for Aquarion-Quarry Ridge, 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.