What was found in Dubach'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 | 32 µg/L 0.3% of the EPA limit 10000 µg/L Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 1000 µg/L — VILLAGE OF DUBACH WATER SYSTEM · 1,218 people · 2019 | 4/4 | SYR4 |
| Fluoride | 304.5 µg/L 7.6% of the EPA limit 4000 µg/L Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 500 µg/L — MINERAL SPRINGS WATER SYSTEM · 900 people · 2019 | 4/4 | SYR4 |
| Copper | 155 µg/L 12% of the EPA limit 1300 µg/L Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 460 µg/L — LINCOLN PARISH WATERWORKS DISTRICT #1 · 570 people · 2019 | 4/4 | SYR4 |
| TTHM | 122.185 µg/L 153% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 265.5 µg/L — VILLAGE OF DUBACH WATER SYSTEM · 1,218 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 54.105 µg/L No EPA limit set Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 110.45 µg/L — VILLAGE OF DUBACH WATER SYSTEM · 1,218 people · 2019 | 4/4 | SYR4 |
| Bromoform | 14.73 µg/L No EPA limit set Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 87.015 µg/L — VILLAGE OF DUBACH WATER SYSTEM · 1,218 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 35.995 µg/L No EPA limit set Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 53.545 µg/L — VILLAGE OF DUBACH WATER SYSTEM · 1,218 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 30.83 µg/L 51% of the EPA limit 60 µg/L Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 48.05 µg/L — VILLAGE OF DUBACH WATER SYSTEM · 1,218 people · 2019 | 4/4 | SYR4 |
| Dibromoacetic Acid | 14.92 µg/L No EPA limit set Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 26.88 µg/L — VILLAGE OF DUBACH WATER SYSTEM · 1,218 people · 2019 | 4/4 | SYR4 |
| Chloroform | 22.06 µg/L No EPA limit set Main supplier: HICO WATER SYSTEM · 1,530 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 10.465 µg/L No EPA limit set Main supplier: HICO WATER SYSTEM · 1,530 people · 2019 | 4/4 | SYR4 |
| Barium | 5.6 µg/L 0.3% of the EPA limit 2000 µg/L Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 9.89 µg/L — LINCOLN PARISH WATERWORKS DISTRICT #1 · 570 people · 2019 | 3/4 | SYR4 |
| Monobromoacetic Acid | 4.7865 µg/L No EPA limit set Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 8.7 µg/L — VILLAGE OF DUBACH WATER SYSTEM · 1,218 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 7.65 µg/L No EPA limit set Main supplier: HICO WATER SYSTEM · 1,530 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 1.66 µg/L No EPA limit set Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 4.3 µg/L — VILLAGE OF DUBACH WATER SYSTEM · 1,218 people · 2019 | 3/4 | SYR4 |
| Cyanide | 4.08 µg/L 2% of the EPA limit 200 µg/L Main supplier: HICO WATER SYSTEM · 1,530 people · 2019 | 1/4 | SYR4 |
| Gross Beta Particle Activity | 2.13 pCi/L No EPA limit set Highest in the city: LINCOLN PARISH WATERWORKS DISTRICT #1 · 570 people · 2019 | 2/4 | SYR4 |
| Lead | 1 µg/L 6.7% of the EPA limit 15 µg/L Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 2 µg/L — MINERAL SPRINGS WATER SYSTEM · 900 people · 2019 | 4/4 | SYR4 |
| Dalapon | 1.81 µg/L 0.9% of the EPA limit 200 µg/L Highest in the city: MINERAL SPRINGS WATER SYSTEM · 900 people · 2019 | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 1.805 pCi/L 36% of the EPA limit 5 pCi/L Main supplier: HICO WATER SYSTEM · 1,530 people · 2019 | 4/4 | SYR4 |
| Arsenic | 0.8720 µg/L 8.7% of the EPA limit 10 µg/L Main supplier: HICO WATER SYSTEM · 1,530 people · 2019 | 2/4 | SYR4 |
| Selenium | 0.8400 µg/L 1.7% of the EPA limit 50 µg/L Highest in the city: MINERAL SPRINGS WATER SYSTEM · 900 people · 2019 | 1/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.5300 µg/L 8.8% of the EPA limit 6 µg/L Main supplier: HICO WATER SYSTEM · 1,530 people · 2019
Highest in the city: 0.7175 µg/L — LINCOLN PARISH WATERWORKS DISTRICT #1 · 570 people · 2019 | 4/4 | SYR4 |
| Mercury | 0.1700 µg/L 8.5% of the EPA limit 2 µg/L Highest in the city: VILLAGE OF DUBACH WATER SYSTEM · 1,218 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: HICO WATER SYSTEM · 1,530 people · 2024 | 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 Dubach
| Supplier | Population served |
|---|---|
| HICO WATER SYSTEM | 1,530 |
| VILLAGE OF DUBACH WATER SYSTEM | 1,218 |
| MINERAL SPRINGS WATER SYSTEM | 900 |
| LINCOLN PARISH WATERWORKS DISTRICT #1 | 570 |
Frequently asked questions about Dubach tap water
Is Dubach tap water safe to drink?
EPA testing detected 25 contaminants in the water serving Dubach. 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 Dubach?
4 public water suppliers report drinking-water monitoring for Dubach, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Dubach's water?
The contaminants EPA monitoring detected in Dubach include Nitrate-Nitrite, Fluoride, Copper, TTHM, Dibromochloromethane. 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.