What was found in Rayville'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 | 600 µg/L 46% of the EPA limit 1300 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 1675 µg/L — BCC DETENTION CENTER WS · 150 people · 2019 | 4/4 | SYR4 |
| Nitrate-Nitrite | 1000 µg/L 10% of the EPA limit 10000 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 1650 µg/L — BCC DETENTION CENTER WS · 150 people · 2019 | 4/4 | SYR4 |
| Fluoride | 238 µg/L 5.9% of the EPA limit 4000 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 307.5 µg/L — PALMETTO ADDICTION RECOVERY · 45 people · 2019 | 4/4 | SYR4 |
| Barium | 173 µg/L 8.6% of the EPA limit 2000 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 210 µg/L — BCC DETENTION CENTER WS · 150 people · 2019 | 4/4 | SYR4 |
| TTHM | 161.05 µg/L 201% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019 | 4/4 | SYR4 |
| Chloroform | 110.94 µg/L No EPA limit set Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 84.94 µg/L 142% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019 | 4/4 | SYR4 |
| Bromoform | 10.431 µg/L No EPA limit set Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 56.399 µg/L — PALMETTO ADDICTION RECOVERY · 45 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 46.725 µg/L No EPA limit set Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 46.71 µg/L No EPA limit set Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019 | 4/4 | SYR4 |
| Lead | 3.8 µg/L 25% of the EPA limit 15 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 45.8 µg/L — RIVER ROAD WATER SYSTEM · 3,510 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 27.88 µg/L No EPA limit set Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 30.33 µg/L — RIVER ROAD WATER SYSTEM · 3,510 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 20.06 µg/L No EPA limit set Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 29.85 µg/L — RIVER ROAD WATER SYSTEM · 3,510 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 26.96 µg/L No EPA limit set Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019 | 2/4 | SYR4 |
| Monobromoacetic Acid | 1.92 µg/L No EPA limit set Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 18.52 µg/L — RIVER ROAD WATER SYSTEM · 3,510 people · 2019 | 3/4 | SYR4 |
| Arsenic | 5.3 µg/L 53% of the EPA limit 10 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 15 µg/L — PALMETTO ADDICTION RECOVERY · 45 people · 2019 | 4/4 | SYR4 |
| Dibromoacetic Acid | 5 µg/L No EPA limit set Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 10.622 µg/L — RIVER ROAD WATER SYSTEM · 3,510 people · 2019 | 4/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 8 pCi/L 53% of the EPA limit 15 pCi/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2016 | 1/4 | SYR4 |
| Gross Beta Particle Activity | 5.505 pCi/L No EPA limit set Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 6.495 pCi/L — BCC DETENTION CENTER WS · 150 people · 2019 | 4/4 | SYR4 |
| Cyanide | 5.7 µg/L 2.9% of the EPA limit 200 µg/L Highest in the city: RIVER ROAD WATER SYSTEM · 3,510 people · 2018 | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 0.9000 pCi/L 18% of the EPA limit 5 pCi/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 2.045 pCi/L — RIVER ROAD WATER SYSTEM · 3,510 people · 2018 | 4/4 | SYR4 |
| Combined Uranium | 1.4075 µg/L 4.7% of the EPA limit 30 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2016 | 2/4 | SYR4 |
| Selenium | 1.257 µg/L 2.5% of the EPA limit 50 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 1.4 µg/L — RIVER ROAD WATER SYSTEM · 3,510 people · 2018 | 2/4 | SYR4 |
| Dalapon | 1.36 µg/L 0.7% of the EPA limit 200 µg/L Highest in the city: PALMETTO ADDICTION RECOVERY · 45 people · 2019 | 1/4 | SYR4 |
| Cadmium | 1 µg/L 20% of the EPA limit 5 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019 | 2/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.6630 µg/L 11% of the EPA limit 6 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019
Highest in the city: 0.8610 µg/L — RIVER ROAD WATER SYSTEM · 3,510 people · 2018 | 4/4 | SYR4 |
| Tetrachloroethylene | 0.7000 µg/L 14% of the EPA limit 5 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019 | 1/4 | SYR4 |
| Hexachlorobenzene | 0.1900 µg/L 19% of the EPA limit 1 µg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2019 | 1/4 | SYR4 |
| Picloram | 0.0980 µg/L 0% of the EPA limit 500 µg/L Highest in the city: BCC DETENTION CENTER WS · 150 people · 2019 | 1/4 | SYR4 |
| PFHXS | 0.0034 µg/L No EPA limit set Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2024 | 1/4 | UCMR-5 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: TOWN OF RAYVILLE WATER SYSTEM · 4,842 people · 2022
Highest in the city: 0.0026 mg/L — RIVER ROAD WATER SYSTEM · 3,510 people · 2025 | 4/4 | 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 Rayville
| Supplier | Population served |
|---|---|
| TOWN OF RAYVILLE WATER SYSTEM | 4,842 |
| RIVER ROAD WATER SYSTEM | 3,510 |
| BCC DETENTION CENTER WS | 150 |
| PALMETTO ADDICTION RECOVERY | 45 |
Frequently asked questions about Rayville tap water
Is Rayville tap water safe to drink?
EPA testing detected 31 contaminants in the water serving Rayville. 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 Rayville?
4 public water suppliers report drinking-water monitoring for Rayville, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Rayville's water?
The contaminants EPA monitoring detected in Rayville include Copper, Nitrate-Nitrite, Fluoride, Barium, 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.