What was found in Sunset'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 | 470 µg/L 36% of the EPA limit 1300 µg/L Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2019
Highest in the city: 1905 µg/L — GREENBRIAR PRAIRIE BASSE WATER SYSTEM · 1,656 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 530 µg/L 5.3% of the EPA limit 10000 µg/L Highest in the city: GREENBRIAR PRAIRIE BASSE WATER SYSTEM · 1,656 people · 2019 | 2/3 | SYR4 |
| Fluoride | 240 µg/L 6% of the EPA limit 4000 µg/L Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2017
Highest in the city: 434 µg/L — TOWN OF SUNSET WATER SYSTEM · 4,356 people · 2019 | 3/3 | SYR4 |
| Barium | 219 µg/L 11% of the EPA limit 2000 µg/L Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2017 | 3/3 | SYR4 |
| TTHM | 15.49 µg/L 19% of the EPA limit 80 µg/L Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2019 | 3/3 | SYR4 |
| Lead | 5 µg/L 33% of the EPA limit 15 µg/L Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2019
Highest in the city: 10.05 µg/L — GREENBRIAR PRAIRIE BASSE WATER SYSTEM · 1,656 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 4.735 µg/L 7.9% of the EPA limit 60 µg/L Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2019
Highest in the city: 8.61 µg/L — GREENBRIAR PRAIRIE BASSE WATER SYSTEM · 1,656 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 8.56 µg/L No EPA limit set Highest in the city: GREENBRIAR PRAIRIE BASSE WATER SYSTEM · 1,656 people · 2019 | 2/3 | SYR4 |
| Dibromochloromethane | 5.935 µg/L No EPA limit set Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 5.84 µg/L No EPA limit set Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2019 | 3/3 | SYR4 |
| Chloroform | 3.335 µg/L No EPA limit set Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2019 | 3/3 | SYR4 |
| Arsenic | 3.185 µg/L 32% of the EPA limit 10 µg/L Highest in the city: TOWN OF SUNSET WATER SYSTEM · 4,356 people · 2019 | 2/3 | SYR4 |
| Bromoform | 1.9 µg/L No EPA limit set Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2019
Highest in the city: 2.625 µg/L — TOWN OF SUNSET WATER SYSTEM · 4,356 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 1.8 µg/L No EPA limit set Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 1.705 µg/L No EPA limit set Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 1.58 µg/L No EPA limit set Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2019 | 2/3 | SYR4 |
| Combined Uranium | 1.4575 µg/L 4.9% of the EPA limit 30 µg/L Highest in the city: GREENBRIAR PRAIRIE BASSE WATER SYSTEM · 1,656 people · 2018 | 2/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.411 µg/L 24% of the EPA limit 6 µg/L Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2017 | 3/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.1469 pCi/L 23% of the EPA limit 5 pCi/L Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2017 | 2/3 | SYR4 |
| Monobromoacetic Acid | 0.3380 µg/L No EPA limit set Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2019 | 1/3 | SYR4 |
| Lead | 0.00092 mg/L 6.1% of the EPA limit 0.0150 mg/L Main supplier: ST LANDRY WATER WORKS DISTRICT 2 RURAL · 4,761 people · 2025 | 3/3 | 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 Sunset
| Supplier | Population served |
|---|---|
| ST LANDRY WATER WORKS DISTRICT 2 RURAL | 4,761 |
| TOWN OF SUNSET WATER SYSTEM | 4,356 |
| GREENBRIAR PRAIRIE BASSE WATER SYSTEM | 1,656 |
Frequently asked questions about Sunset tap water
Is Sunset tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Sunset. 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 Sunset?
3 public water suppliers report drinking-water monitoring for Sunset, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Sunset's water?
The contaminants EPA monitoring detected in Sunset 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.