What was found in Centerville'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 |
|---|---|---|---|
| Nitrate-Nitrite | 1000 µg/L 10% of the EPA limit 10000 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Copper | 820 µg/L 63% of the EPA limit 1300 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Fluoride | 107 µg/L 2.7% of the EPA limit 4000 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| TTHM | 85.66 µg/L 107% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 71.84 µg/L 120% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Chloroform | 59 µg/L No EPA limit set Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Barium | 56.6 µg/L 2.8% of the EPA limit 2000 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Dalapon | 38.0848 µg/L 19% of the EPA limit 200 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 33.75 µg/L No EPA limit set Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 33.2 µg/L No EPA limit set Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 21 µg/L No EPA limit set Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Lead | 14.8 µg/L 99% of the EPA limit 15 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Lithium | 11 µg/L No EPA limit set Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2024 | 1/1 | UCMR-5 |
| Dibromochloromethane | 5.48 µg/L No EPA limit set Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Cyanide | 5.4 µg/L 2.7% of the EPA limit 200 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 3.655 µg/L No EPA limit set Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 3.38 µg/L No EPA limit set Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 3.06 pCi/L No EPA limit set Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2.92 µg/L No EPA limit set Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Arsenic | 2.6 µg/L 26% of the EPA limit 10 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.1465 µg/L 19% of the EPA limit 6 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Xylenes, Total | 0.7600 µg/L 0% of the EPA limit 10000 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 0.7492 pCi/L 15% of the EPA limit 5 pCi/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Selenium | 0.6200 µg/L 1.2% of the EPA limit 50 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Atrazine | 0.4995 µg/L 17% of the EPA limit 3 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Hexachlorocyclopentadiene | 0.1600 µg/L 0.3% of the EPA limit 50 µg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2019 | 1/1 | SYR4 |
| Pfba | 0.0054 µg/L No EPA limit set Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.0033 mg/L 22% of the EPA limit 0.0150 mg/L Main supplier: ST MARY WATER & SEWER COMM #3 · 7,828 people · 2025 | 1/1 | 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 Centerville
| Supplier | Population served |
|---|---|
| ST MARY WATER & SEWER COMM #3 | 7,828 |
Frequently asked questions about Centerville tap water
Is Centerville tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Centerville. 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 Centerville?
1 public water supplier report drinking-water monitoring for Centerville, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Centerville's water?
The contaminants EPA monitoring detected in Centerville include Nitrate-Nitrite, Copper, Fluoride, TTHM, Total Haloacetic Acids (HAA5). 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.