What was found in Opelousas's water
The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Barium | 1000 µg/L 50% of the EPA limit 2000 µg/L | 3/3 | SYR4 |
| Copper | 1000 µg/L 77% of the EPA limit 1300 µg/L | 3/3 | SYR4 |
| Fluoride | 510 µg/L 13% of the EPA limit 4000 µg/L | 3/3 | SYR4 |
| Nitrate-Nitrite | 200 µg/L 2% of the EPA limit 10000 µg/L | 2/3 | SYR4 |
| TTHM | 73 µg/L 91% of the EPA limit 80 µg/L | 3/3 | SYR4 |
| Lithium | 39.1 µg/L No EPA limit set | 3/3 | UCMR-5 |
| Dibromochloromethane | 33.2 µg/L No EPA limit set | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 26 µg/L 43% of the EPA limit 60 µg/L | 3/3 | SYR4 |
| Bromoform | 21.3 µg/L No EPA limit set | 3/3 | SYR4 |
| Chloroform | 16.3 µg/L No EPA limit set | 3/3 | SYR4 |
| Trichloroacetic Acid | 16 µg/L No EPA limit set | 3/3 | SYR4 |
| Bromodichloromethane | 13.9 µg/L No EPA limit set | 3/3 | SYR4 |
| Dibromoacetic Acid | 11 µg/L No EPA limit set | 3/3 | SYR4 |
| Arsenic | 10 µg/L 100% of the EPA limit 10 µg/L | 2/3 | SYR4 |
| Dichloroacetic Acid | 8 µg/L No EPA limit set | 3/3 | SYR4 |
| Chromium | 7.1 µg/L 7.1% of the EPA limit 100 µg/L | 1/3 | SYR4 |
| Monochloroacetic Acid | 5 µg/L No EPA limit set | 1/3 | SYR4 |
| Lead | 4 µg/L 27% of the EPA limit 15 µg/L | 3/3 | SYR4 |
| Gross Beta Particle Activity | 3.83 pCi/L No EPA limit set | 2/3 | SYR4 |
| Monobromoacetic Acid | 3.1 µg/L No EPA limit set | 3/3 | SYR4 |
| Combined Radium (-226 And -228) | 2.4 pCi/L 48% of the EPA limit 5 pCi/L | 3/3 | SYR4 |
| Combined Uranium | 1.49 µg/L 5% of the EPA limit 30 µg/L | 1/3 | SYR4 |
| P-Dichlorobenzene | 1.03 µg/L 1.4% of the EPA limit 75 µg/L | 2/3 | SYR4 |
| Antimony, Total | 1 µg/L 17% of the EPA limit 6 µg/L | 1/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.7700 µg/L 13% of the EPA limit 6 µg/L | 3/3 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 3/3 | LCR |
Water suppliers serving Opelousas
| Supplier | Population served |
|---|---|
| CITY OF OPELOUSAS WATER SYSTEM | 20,388 |
| LEWISBURG BELLEVUE WATER SYSTEM | 8,226 |
| PLAISANCE WATER SYSTEM | 6,465 |
Frequently asked questions about Opelousas tap water
Is Opelousas tap water safe to drink?
EPA testing detected 26 contaminants in the water serving Opelousas. 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 Opelousas?
3 public water suppliers report drinking-water monitoring for Opelousas, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Opelousas's water?
The contaminants EPA monitoring detected in Opelousas include Barium, Copper, Fluoride, Nitrate-Nitrite, TTHM. The full list, with the highest level found 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.