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 | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 333.12 µg/L 416% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 345.9 µg/L | 37/37 | SYR4 | 2013–2019 |
| Bromoform | 250.25 µg/L No EPA limit set
worst single sample: 294 µg/L | 36/37 | SYR4 | 2013–2019 |
| Dibromochloromethane | 63.075 µg/L No EPA limit set
worst single sample: 67.3 µg/L | 36/37 | SYR4 | 2013–2019 |
| Dibromoacetic Acid | 40.92 µg/L No EPA limit set
worst single sample: 62.8 µg/L | 35/36 | SYR4 | 2013–2019 |
| Total Haloacetic Acids (HAA5) | 40.92 µg/L 68% of the EPA limit 60 µg/L
worst single sample: 62.8 µg/L | 35/36 | SYR4 | 2013–2019 |
| Bromodichloromethane | 15.55 µg/L No EPA limit set
worst single sample: 21.4 µg/L | 31/37 | SYR4 | 2013–2019 |
| Chloroform | 5.611 µg/L No EPA limit set
worst single sample: 32.8 µg/L | 27/37 | SYR4 | 2013–2019 |
| Copper | 890 µg/L 68% of the EPA limit 1300 µg/L
worst single sample: 1200 µg/L | 23/33 | SYR4 | 2015–2019 |
| Monobromoacetic Acid | 4.455 µg/L No EPA limit set
worst single sample: 7.6 µg/L | 18/36 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 4.72 µg/L No EPA limit set
worst single sample: 13.2 µg/L | 17/36 | SYR4 | 2013–2019 |
| Lead | 10.8 µg/L 72% of the EPA limit 15 µg/L
worst single sample: 21 µg/L | 13/33 | SYR4 | 2015–2019 |
| Dichloroacetic Acid | 9.335 µg/L No EPA limit set
worst single sample: 14.6 µg/L | 10/36 | SYR4 | 2013–2019 |
| Fluoride | 412 µg/L 10% of the EPA limit 4000 µg/L
worst single sample: 420 µg/L | 9/9 | SYR4 | 2014–2019 |
| Lead | 0.00075 mg/L 5% of the EPA limit 0.0150 mg/L | 9/9 | LCR | 2025 |
| Barium | 26.75 µg/L 1.3% of the EPA limit 2000 µg/L
worst single sample: 27 µg/L | 6/9 | SYR4 | 2014–2019 |
| Nitrate-Nitrite | 80 µg/L 0.8% of the EPA limit 10000 µg/L | 6/42 | SYR4 | 2012–2019 |
| Arsenic | 1.85 µg/L 19% of the EPA limit 10 µg/L
worst single sample: 2 µg/L | 4/9 | SYR4 | 2014–2019 |
| Gross Beta Particle Activity | 3.568 pCi/L No EPA limit set
worst single sample: 3.67 pCi/L | 3/9 | SYR4 | 2014–2019 |
| Asbestos | 14.465 MFL 207% of the EPA limit, at the 95th percentile of samples — 7 MFL
worst single sample: 15 MFL | 2/8 | SYR4 | 2019 |
| Di(2-ethylhexyl) Phthalate | 1.041 µg/L 17% of the EPA limit 6 µg/L
worst single sample: 1.06 µg/L | 2/9 | SYR4 | 2014–2019 |
| Cyanide | 6.6 µg/L 3.3% of the EPA limit 200 µg/L | 1/9 | SYR4 | 2014–2019 |
| Combined Radium (-226 And -228) | 0.9510 pCi/L 19% of the EPA limit 5 pCi/L | 1/6 | SYR4 | 2016–2019 |
| Dalapon | 2.24 µg/L 1.1% of the EPA limit 200 µg/L | 1/12 | SYR4 | 2014–2019 |
| Gross Alpha, Excl. Radon And U | 4.96 pCi/L 33% of the EPA limit 15 pCi/L | 1/8 | SYR4 | 2014–2019 |
| Selenium | 10 µg/L 20% of the EPA limit 50 µg/L | 1/9 | SYR4 | 2014–2019 |
57 contaminants tested, none detected
Utility contact
Frequently asked questions about Union Parish Waterworks District 1
Is Union Parish Waterworks District 1 tap water safe to drink?
EPA monitoring detected 25 contaminants in Union Parish Waterworks District 1'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 Union Parish Waterworks District 1's water?
EPA monitoring detected TTHM, Bromoform, Dibromochloromethane, Dibromoacetic Acid, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does Union Parish Waterworks District 1 serve?
Union Parish Waterworks District 1 reports serving 1,626 people in Louisiana, per its EPA record.
Has Union Parish Waterworks District 1 had any water quality violations?
The EPA has 959 violations on file for Union Parish Waterworks District 1, of which 337 are health-based (a contaminant limit or required treatment was breached) and 57 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.