What was found in Arnaudville's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Copper | 1900 µg/L 146% of the EPA limit, at the 95th percentile of samples — 1300 µg/L Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019 | 2/2 | SYR4 |
| Barium | 512.5 µg/L 26% of the EPA limit 2000 µg/L Main supplier: UNITED WATER SYSTEM · 4,446 people · 2018 | 1/2 | SYR4 |
| Fluoride | 200 µg/L 5% of the EPA limit 4000 µg/L Main supplier: UNITED WATER SYSTEM · 4,446 people · 2017
Highest in the city: 300 µg/L — TOWN OF ARNAUDVILLE WATER SYSTEM · 3,957 people · 2017 | 2/2 | SYR4 |
| Nitrate-Nitrite | 36 µg/L 0.4% of the EPA limit 10000 µg/L Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019
Highest in the city: 140 µg/L — TOWN OF ARNAUDVILLE WATER SYSTEM · 3,957 people · 2019 | 2/2 | SYR4 |
| TTHM | 63.415 µg/L 79% of the EPA limit 80 µg/L Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019 | 2/2 | SYR4 |
| Chloroform | 44.835 µg/L No EPA limit set Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 42.869 µg/L 71% of the EPA limit 60 µg/L Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019 | 2/2 | SYR4 |
| Arsenic | 35.8 µg/L 358% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 25.7 µg/L No EPA limit set Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 25.4 µg/L No EPA limit set Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 16.555 µg/L No EPA limit set Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019 | 2/2 | SYR4 |
| Lithium | 11.2 µg/L No EPA limit set Main supplier: UNITED WATER SYSTEM · 4,446 people · 2025 | 2/2 | UCMR-5 |
| Chromium | 10 µg/L 10% of the EPA limit 100 µg/L Main supplier: UNITED WATER SYSTEM · 4,446 people · 2017 | 1/2 | SYR4 |
| Lead | 8 µg/L 53% of the EPA limit 15 µg/L Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 5.88 µg/L No EPA limit set Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019 | 2/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 3.2485 µg/L 54% of the EPA limit 6 µg/L Main supplier: UNITED WATER SYSTEM · 4,446 people · 2017 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 3.15 pCi/L No EPA limit set Main supplier: UNITED WATER SYSTEM · 4,446 people · 2017 | 2/2 | SYR4 |
| Combined Uranium | 1.49 µg/L 5% of the EPA limit 30 µg/L Highest in the city: TOWN OF ARNAUDVILLE WATER SYSTEM · 3,957 people · 2014 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.1172 pCi/L 22% of the EPA limit 5 pCi/L Main supplier: UNITED WATER SYSTEM · 4,446 people · 2017
Highest in the city: 1.391 pCi/L — TOWN OF ARNAUDVILLE WATER SYSTEM · 3,957 people · 2017 | 2/2 | SYR4 |
| Dalapon | 1.179 µg/L 0.6% of the EPA limit 200 µg/L Highest in the city: TOWN OF ARNAUDVILLE WATER SYSTEM · 3,957 people · 2017 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.016 µg/L No EPA limit set Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 0.7490 µg/L No EPA limit set Main supplier: UNITED WATER SYSTEM · 4,446 people · 2019 | 2/2 | SYR4 |
| Bromoform | 0.5720 µg/L No EPA limit set Highest in the city: TOWN OF ARNAUDVILLE WATER SYSTEM · 3,957 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: UNITED WATER SYSTEM · 4,446 people · 2023 | 2/2 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Arnaudville
| Supplier | Population served |
|---|---|
| UNITED WATER SYSTEM | 4,446 |
| TOWN OF ARNAUDVILLE WATER SYSTEM | 3,957 |
Frequently asked questions about Arnaudville tap water
Is Arnaudville tap water safe to drink?
EPA testing detected 24 contaminants in the water serving Arnaudville. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Arnaudville?
2 public water suppliers report drinking-water monitoring for Arnaudville, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Arnaudville's water?
The contaminants EPA monitoring detected in Arnaudville include Copper, Barium, Fluoride, Nitrate-Nitrite, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.
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.