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 |
|---|---|---|---|
| Other | Monitoring | Resolved | 2023-07-01 |
| Other | Monitoring | Resolved | 2023-07-01 |
| Other | Monitoring | Resolved | 2018-07-01 |
| Other | Monitoring | Resolved | 2018-07-01 |
| MR | Monitoring | Resolved | 2015-04-01 |
| MR | Monitoring | Resolved | 2015-04-01 |
| MR | Monitoring | Resolved | 2014-09-29 |
| MR | Monitoring | Resolved | 2014-09-29 |
| MR | Monitoring | Resolved | 2014-05-01 → 2014-05-31 |
| MR | Monitoring | Resolved | 2014-05-01 → 2014-05-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 449.9 µg/L 35% of the EPA limit 1300 µg/L
worst single sample: 473 µg/L | 15/15 | SYR4 | 2014–2017 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L | 5/5 | LCR | 2023 |
| Bromodichloromethane | 9.92 µg/L No EPA limit set
worst single sample: 10 µg/L | 3/3 | SYR4 | 2017–2019 |
| Chloroform | 43.5 µg/L No EPA limit set
worst single sample: 44 µg/L | 3/3 | SYR4 | 2017–2019 |
| Dibromoacetic Acid | 0.4270 µg/L No EPA limit set
worst single sample: 0.4300 µg/L | 3/3 | SYR4 | 2017–2019 |
| Dibromochloromethane | 2.05 µg/L No EPA limit set
worst single sample: 2.1 µg/L | 3/3 | SYR4 | 2017–2019 |
| Dichloroacetic Acid | 19.5 µg/L No EPA limit set
worst single sample: 20 µg/L | 3/3 | SYR4 | 2017–2019 |
| Lead | 2 µg/L 13% of the EPA limit 15 µg/L | 3/15 | SYR4 | 2014–2017 |
| TTHM | 54.6 µg/L 68% of the EPA limit 80 µg/L
worst single sample: 55 µg/L | 3/3 | SYR4 | 2017–2019 |
| Total Haloacetic Acids (HAA5) | 38.4 µg/L 64% of the EPA limit 60 µg/L
worst single sample: 39 µg/L | 3/3 | SYR4 | 2017–2019 |
| Trichloroacetic Acid | 17 µg/L No EPA limit set | 3/3 | SYR4 | 2017–2019 |
| Monochloroacetic Acid | 1.5 µg/L No EPA limit set | 1/3 | SYR4 | 2017–2019 |
2 contaminants tested, none detected
Utility contact
Frequently asked questions about Double Diamond Subdivision Arbor Hills
Is Double Diamond Subdivision Arbor Hills tap water safe to drink?
EPA monitoring detected 12 contaminants in Double Diamond Subdivision Arbor Hills'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 Double Diamond Subdivision Arbor Hills's water?
EPA monitoring detected Copper, Lead, Bromodichloromethane, Chloroform, Dibromoacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Double Diamond Subdivision Arbor Hills serve?
Double Diamond Subdivision Arbor Hills reports serving 50 people in Montana, per its EPA record.
Has Double Diamond Subdivision Arbor Hills had any water quality violations?
The EPA has 17 violations on file for Double Diamond Subdivision Arbor Hills, of which 0 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.