What was found in Belle Chasse'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 | 2300 µg/L 23% of the EPA limit 10000 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 2480 µg/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 4/4 | SYR4 |
| Copper | 700 µg/L 54% of the EPA limit 1300 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 870 µg/L — DALCOUR WATERWORKS DISTRICT · 1,248 people · 2019 | 4/4 | SYR4 |
| Fluoride | 640 µg/L 16% of the EPA limit 4000 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019 | 4/4 | SYR4 |
| TTHM | 97.2 µg/L 122% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 131.85 µg/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 58.84 µg/L 98% of the EPA limit 60 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 111.075 µg/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 4/4 | SYR4 |
| Chloroform | 71.915 µg/L No EPA limit set Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 111 µg/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 4/4 | SYR4 |
| Barium | 56.8 µg/L 2.8% of the EPA limit 2000 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 67.9 µg/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 32.045 µg/L No EPA limit set Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 60.5 µg/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 4/4 | SYR4 |
| Bromoform | 0.7330 µg/L No EPA limit set Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 47.8 µg/L — POINTE A LA HACHE WATER SYSTEM · 882 people · 2019 | 4/4 | SYR4 |
| Dalapon | 37.452 µg/L 19% of the EPA limit 200 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 26 µg/L No EPA limit set Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 36.25 µg/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 23.505 µg/L No EPA limit set Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 25.85 µg/L — POINTE A LA HACHE WATER SYSTEM · 882 people · 2019 | 4/4 | SYR4 |
| Monobromoacetic Acid | 3.6 µg/L No EPA limit set Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 21.8935 µg/L — DALCOUR WATERWORKS DISTRICT · 1,248 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 8.965 µg/L No EPA limit set Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 18.65 µg/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 4/4 | SYR4 |
| Lithium | 17.6 µg/L No EPA limit set Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2024 | 2/4 | UCMR-5 |
| Dibromoacetic Acid | 3 µg/L No EPA limit set Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 11.82 µg/L — POINTE A LA HACHE WATER SYSTEM · 882 people · 2019 | 4/4 | SYR4 |
| Lead | 10.7 µg/L 71% of the EPA limit 15 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019 | 4/4 | SYR4 |
| Arsenic | 1.75 µg/L 18% of the EPA limit 10 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 8.7 µg/L — POINTE A LA HACHE WATER SYSTEM · 882 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 3.725 µg/L No EPA limit set Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 7.5 µg/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 4/4 | SYR4 |
| Gross Beta Particle Activity | 4.6775 pCi/L No EPA limit set Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 6.8 pCi/L — POINTE A LA HACHE WATER SYSTEM · 882 people · 2019 | 4/4 | SYR4 |
| Cyanide | 6 µg/L 3% of the EPA limit 200 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019 | 1/4 | SYR4 |
| Selenium | 2.046 µg/L 4.1% of the EPA limit 50 µg/L Highest in the city: PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 2/4 | SYR4 |
| Combined Uranium | 1.49 µg/L 5% of the EPA limit 30 µg/L Highest in the city: POINTE A LA HACHE WATER SYSTEM · 882 people · 2017 | 2/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.8825 µg/L 15% of the EPA limit 6 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 0.9450 µg/L — DALCOUR WATERWORKS DISTRICT · 1,248 people · 2019 | 4/4 | SYR4 |
| Atrazine | 0.2256 µg/L 7.5% of the EPA limit 3 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 0.8825 µg/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 4/4 | SYR4 |
| Simazine | 0.8100 µg/L 20% of the EPA limit 4 µg/L Highest in the city: DALCOUR WATERWORKS DISTRICT · 1,248 people · 2019 | 2/4 | SYR4 |
| Combined Radium (-226 And -228) | 0.2978 pCi/L 6% of the EPA limit 5 pCi/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 0.7022 pCi/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 4/4 | SYR4 |
| Antimony, Total | 0.6600 µg/L 11% of the EPA limit 6 µg/L Highest in the city: PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 1/4 | SYR4 |
| Carbon Tetrachloride | 0.5900 µg/L 12% of the EPA limit 5 µg/L Highest in the city: DALCOUR WATERWORKS DISTRICT · 1,248 people · 2019 | 2/4 | SYR4 |
| Toluene | 0.5400 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: DALCOUR WATERWORKS DISTRICT · 1,248 people · 2019 | 1/4 | SYR4 |
| Hexachlorocyclopentadiene | 0.0413 µg/L 0.1% of the EPA limit 50 µg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2019
Highest in the city: 0.4659 µg/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2019 | 4/4 | SYR4 |
| Pfba | 0.0081 µg/L No EPA limit set Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2024 | 2/4 | UCMR-5 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: BELLE CHASSE WATER DISTRICT · 19,644 people · 2023
Highest in the city: 0.0050 mg/L — PORT SULPHUR WATER DISTRICT · 10,308 people · 2023 | 4/4 | LCR |
| PFOS | 0.0046 µg/L No EPA limit set Highest in the city: PORT SULPHUR WATER DISTRICT · 10,308 people · 2025 | 1/4 | UCMR-5 |
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 Belle Chasse
| Supplier | Population served |
|---|---|
| BELLE CHASSE WATER DISTRICT | 19,644 |
| PORT SULPHUR WATER DISTRICT | 10,308 |
| DALCOUR WATERWORKS DISTRICT | 1,248 |
| POINTE A LA HACHE WATER SYSTEM | 882 |
Frequently asked questions about Belle Chasse tap water
Is Belle Chasse tap water safe to drink?
EPA testing detected 34 contaminants in the water serving Belle Chasse. 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 Belle Chasse?
4 public water suppliers report drinking-water monitoring for Belle Chasse, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Belle Chasse's water?
The contaminants EPA monitoring detected in Belle Chasse 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.