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 | 2003-08-01 → 2003-08-31 |
| MCL | Health-based | Resolved | 2003-08-01 → 2003-08-31 |
| MCL | Health-based | Resolved | 2003-08-01 → 2003-08-31 |
| MCL | Health-based | Resolved | 2003-08-01 → 2003-08-31 |
| MCL | Health-based | Resolved | 2003-08-01 → 2003-08-31 |
| MR | Monitoring | Resolved | 2017-10-01 |
| MR | Monitoring | Resolved | 2017-10-01 |
| MR | Monitoring | Resolved | 2017-10-01 |
| MR | Monitoring | Resolved | 2005-01-01 |
| MR | Monitoring | Resolved | 2005-01-01 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 644.9 µg/L 50% of the EPA limit 1300 µg/L
worst single sample: 2830 µg/L | 42/44 | SYR4 | 2014–2018 |
| Nitrate-Nitrite | 3472.5 µg/L 35% of the EPA limit 10000 µg/L
worst single sample: 3720 µg/L | 36/36 | SYR4 | 2012–2019 |
| Lead | 13.76 µg/L 92% of the EPA limit 15 µg/L
worst single sample: 31.1 µg/L | 28/44 | SYR4 | 2014–2018 |
| Bromodichloromethane | 4.24 µg/L No EPA limit set
worst single sample: 5.5 µg/L | 19/20 | SYR4 | 2012–2019 |
| TTHM | 14.07 µg/L 18% of the EPA limit 80 µg/L
worst single sample: 16.5 µg/L | 19/20 | SYR4 | 2012–2019 |
| Dibromochloromethane | 5.535 µg/L No EPA limit set
worst single sample: 6.3 µg/L | 18/20 | SYR4 | 2012–2019 |
| Chloroform | 3.68 µg/L No EPA limit set
worst single sample: 4.4 µg/L | 17/20 | SYR4 | 2012–2019 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L | 17/17 | LCR | 2024 |
| Bromoform | 2.56 µg/L No EPA limit set
worst single sample: 3.4 µg/L | 15/20 | SYR4 | 2012–2019 |
| Barium | 189.75 µg/L 9.5% of the EPA limit 2000 µg/L
worst single sample: 193 µg/L | 6/6 | SYR4 | 2012–2017 |
| Dibromoacetic Acid | 2.6 µg/L No EPA limit set
worst single sample: 2.7 µg/L | 6/6 | SYR4 | 2013–2019 |
| Fluoride | 615.75 µg/L 15% of the EPA limit 4000 µg/L
worst single sample: 621 µg/L | 6/6 | SYR4 | 2012–2017 |
| Total Haloacetic Acids (HAA5) | 5.525 µg/L 9.2% of the EPA limit 60 µg/L
worst single sample: 5.8 µg/L | 6/6 | SYR4 | 2013–2019 |
| Dichloroacetic Acid | 1.84 µg/L No EPA limit set
worst single sample: 1.9 µg/L | 4/6 | SYR4 | 2013–2019 |
| Arsenic | 0.8355 µg/L 8.4% of the EPA limit 10 µg/L
worst single sample: 0.8500 µg/L | 2/6 | SYR4 | 2012–2017 |
| Toluene | 0.7190 µg/L 0.1% of the EPA limit 1000 µg/L
worst single sample: 0.7200 µg/L | 2/16 | SYR4 | 2012–2019 |
| Xylenes, Total | 0.5895 µg/L 0% of the EPA limit 10000 µg/L
worst single sample: 0.5900 µg/L | 2/16 | SYR4 | 2012–2019 |
| Combined Uranium | 1 µg/L 3.3% of the EPA limit 30 µg/L | 1/2 | SYR4 | 2015 |
| Gross Alpha, Excl. Radon And U | 2.5 pCi/L 17% of the EPA limit 15 pCi/L | 1/2 | SYR4 | 2015 |
56 contaminants tested, none detected
Utility contact
Frequently asked questions about North Star Zoot Water
Is North Star Zoot Water tap water safe to drink?
EPA monitoring detected 19 contaminants in North Star Zoot Water'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 North Star Zoot Water's water?
EPA monitoring detected Copper, Nitrate-Nitrite, Lead, Bromodichloromethane, TTHM, and others. The full list with the level and data source for each is above.
How many people does North Star Zoot Water serve?
North Star Zoot Water reports serving 4,323 people in Montana, per its EPA record.
Has North Star Zoot Water had any water quality violations?
The EPA has 16 violations on file for North Star Zoot Water, of which 5 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.