What was found in Duson'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 | 340 µg/L 26% of the EPA limit 1300 µg/L Main supplier: LPWD SOUTH · 15,132 people · 2017 | 2/3 | SYR4 |
| Barium | 338.5 µg/L 17% of the EPA limit 2000 µg/L Highest in the city: TOWN OF DUSON WATER SYSTEM · 2,190 people · 2018 | 1/3 | SYR4 |
| Fluoride | 207.5 µg/L 5.2% of the EPA limit 4000 µg/L Highest in the city: TOWN OF DUSON WATER SYSTEM · 2,190 people · 2018 | 1/3 | SYR4 |
| Nitrate-Nitrite | 100 µg/L 1% of the EPA limit 10000 µg/L Highest in the city: TOWN OF DUSON WATER SYSTEM · 2,190 people · 2019 | 1/3 | SYR4 |
| TTHM | 18.5 µg/L 23% of the EPA limit 80 µg/L Main supplier: LPWD SOUTH · 15,132 people · 2019
Highest in the city: 48.265 µg/L — TOWN OF DUSON WATER SYSTEM · 2,190 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 9.82 µg/L 16% of the EPA limit 60 µg/L Main supplier: LPWD SOUTH · 15,132 people · 2019
Highest in the city: 28.6 µg/L — TOWN OF DUSON WATER SYSTEM · 2,190 people · 2019 | 2/3 | SYR4 |
| Chloroform | 3.78 µg/L No EPA limit set Main supplier: LPWD SOUTH · 15,132 people · 2019
Highest in the city: 17.61 µg/L — TOWN OF DUSON WATER SYSTEM · 2,190 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 5.88 µg/L No EPA limit set Main supplier: LPWD SOUTH · 15,132 people · 2019
Highest in the city: 15.87 µg/L — TOWN OF DUSON WATER SYSTEM · 2,190 people · 2019 | 2/3 | SYR4 |
| Dichloroacetic Acid | 5.46 µg/L No EPA limit set Main supplier: LPWD SOUTH · 15,132 people · 2019
Highest in the city: 13.86 µg/L — TOWN OF DUSON WATER SYSTEM · 2,190 people · 2019 | 2/3 | SYR4 |
| Dibromochloromethane | 6.9 µg/L No EPA limit set Main supplier: LPWD SOUTH · 15,132 people · 2019
Highest in the city: 12.49 µg/L — TOWN OF DUSON WATER SYSTEM · 2,190 people · 2019 | 2/3 | SYR4 |
| Lithium | 11.9 µg/L No EPA limit set Main supplier: LPWD SOUTH · 15,132 people · 2025 | 1/3 | UCMR-5 |
| Monochloroacetic Acid | 10.09 µg/L No EPA limit set Main supplier: LPWD SOUTH · 15,132 people · 2019 | 2/3 | SYR4 |
| Trichloroacetic Acid | 1.505 µg/L No EPA limit set Main supplier: LPWD SOUTH · 15,132 people · 2019
Highest in the city: 7.79 µg/L — TOWN OF DUSON WATER SYSTEM · 2,190 people · 2019 | 2/3 | SYR4 |
| Lead | 6.5 µg/L 43% of the EPA limit 15 µg/L Main supplier: LPWD SOUTH · 15,132 people · 2017 | 2/3 | SYR4 |
| Dibromoacetic Acid | 2.7 µg/L No EPA limit set Main supplier: LPWD SOUTH · 15,132 people · 2019
Highest in the city: 3.645 µg/L — TOWN OF DUSON WATER SYSTEM · 2,190 people · 2019 | 2/3 | SYR4 |
| Bromoform | 3.245 µg/L No EPA limit set Main supplier: LPWD SOUTH · 15,132 people · 2019 | 2/3 | SYR4 |
| Gross Beta Particle Activity | 2.5135 pCi/L No EPA limit set Highest in the city: TOWN OF DUSON WATER SYSTEM · 2,190 people · 2018 | 1/3 | SYR4 |
| P-Dichlorobenzene | 1.015 µg/L 1.4% of the EPA limit 75 µg/L Highest in the city: TOWN OF DUSON WATER SYSTEM · 2,190 people · 2018 | 1/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.9700 µg/L 16% of the EPA limit 6 µg/L Highest in the city: TOWN OF DUSON WATER SYSTEM · 2,190 people · 2018 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 0.7417 pCi/L 15% of the EPA limit 5 pCi/L Highest in the city: TOWN OF DUSON WATER SYSTEM · 2,190 people · 2018 | 1/3 | SYR4 |
| Monobromoacetic Acid | 0.7100 µg/L No EPA limit set Highest in the city: TOWN OF DUSON WATER SYSTEM · 2,190 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: LPWD SOUTH · 15,132 people · 2023 | 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 Duson
| Supplier | Population served |
|---|---|
| LPWD SOUTH | 15,132 |
| TOWN OF DUSON WATER SYSTEM | 2,190 |
| ILE DES CANNES WATER SYSTEM | 1,476 |
Frequently asked questions about Duson tap water
Is Duson tap water safe to drink?
EPA testing detected 22 contaminants in the water serving Duson. 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 Duson?
3 public water suppliers report drinking-water monitoring for Duson, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Duson's water?
The contaminants EPA monitoring detected in Duson include Copper, Barium, Fluoride, Nitrate-Nitrite, 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.