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 |
|---|---|---|---|
| MR | Monitoring | Archived | 1995-09-01 → 1995-09-30 |
| MR | Monitoring | Archived | 1995-09-01 → 1995-09-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 111.8 µg/L 8.6% of the EPA limit 1300 µg/L
worst single sample: 186 µg/L | 117/120 | SYR4 | 2013–2019 |
| Bromodichloromethane | 1.982 µg/L No EPA limit set
worst single sample: 12.43 µg/L | 57/57 | SYR4 | 2012–2019 |
| Chloroform | 10.192 µg/L No EPA limit set
worst single sample: 75.97 µg/L | 57/57 | SYR4 | 2012–2019 |
| TTHM | 12.154 µg/L 15% of the EPA limit 80 µg/L
worst single sample: 89.62 µg/L | 57/57 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 20.05 µg/L No EPA limit set
worst single sample: 37.6 µg/L | 56/57 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 24.3125 µg/L 41% of the EPA limit 60 µg/L
worst single sample: 67.65 µg/L | 56/57 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 3.555 µg/L No EPA limit set
worst single sample: 26.2 µg/L | 27/57 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 17/17 | LCR | 2025 |
| Monochloroacetic Acid | 3.4375 µg/L No EPA limit set
worst single sample: 3.85 µg/L | 16/57 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 120 µg/L 1.2% of the EPA limit 10000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Lead | 4.7725 µg/L 32% of the EPA limit 15 µg/L
worst single sample: 4.83 µg/L | 6/120 | SYR4 | 2013–2019 |
| Lithium | 52.3 µg/L No EPA limit set | 4/4 | UCMR-5 | 2025 |
| Barium | 12.6 µg/L 0.6% of the EPA limit 2000 µg/L | 1/1 | SYR4 | 2016 |
| Bromate | 3 µg/L 30% of the EPA limit 10 µg/L | 1/15 | SYR4 | 2018–2019 |
| Dibromochloromethane | 1.22 µg/L No EPA limit set | 1/57 | SYR4 | 2012–2019 |
| Fluoride | 920 µg/L 23% of the EPA limit 4000 µg/L | 1/1 | SYR4 | 2016 |
| Gross Alpha, Excl. Radon And U | 0.3590 pCi/L 2.4% of the EPA limit 15 pCi/L | 1/1 | SYR4 | 2018 |
| Pentachlorophenol | 0.0400 µg/L 4% of the EPA limit 1 µg/L | 1/2 | SYR4 | 2017 |
78 contaminants tested, none detected
Utility contact
Frequently asked questions about Southwest Water Authority
Is Southwest Water Authority tap water safe to drink?
EPA monitoring detected 18 contaminants in Southwest Water Authority'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 Southwest Water Authority's water?
EPA monitoring detected Copper, Bromodichloromethane, Chloroform, TTHM, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Southwest Water Authority serve?
Southwest Water Authority reports serving 8,537 people in North Dakota, per its EPA record.
Has Southwest Water Authority had any water quality violations?
The EPA has 2 violations on file for Southwest Water Authority, 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.