What was found in Colfax'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 |
|---|---|---|---|
| Fluoride | 85 µg/L 2.1% of the EPA limit 4000 µg/L Main supplier: TOWN OF COLFAX · 2,552 people · 2017
Highest in the city: 1400 µg/L — ZONE 2 WATER SYSTEM INC. · 1,344 people · 2018 | 2/2 | SYR4 |
| Nitrate-Nitrite | 380 µg/L 3.8% of the EPA limit 10000 µg/L Main supplier: TOWN OF COLFAX · 2,552 people · 2019
Highest in the city: 660 µg/L — ZONE 2 WATER SYSTEM INC. · 1,344 people · 2019 | 2/2 | SYR4 |
| Copper | 655 µg/L 50% of the EPA limit 1300 µg/L Main supplier: TOWN OF COLFAX · 2,552 people · 2019 | 2/2 | SYR4 |
| Barium | 41.7 µg/L 2.1% of the EPA limit 2000 µg/L Main supplier: TOWN OF COLFAX · 2,552 people · 2017 | 2/2 | SYR4 |
| TTHM | 0.4400 µg/L 0.5% of the EPA limit 80 µg/L Main supplier: TOWN OF COLFAX · 2,552 people · 2019
Highest in the city: 32.03 µg/L — ZONE 2 WATER SYSTEM INC. · 1,344 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.525 µg/L 2.5% of the EPA limit 60 µg/L Main supplier: TOWN OF COLFAX · 2,552 people · 2019
Highest in the city: 18.55 µg/L — ZONE 2 WATER SYSTEM INC. · 1,344 people · 2019 | 2/2 | SYR4 |
| Chloroform | 0.4400 µg/L No EPA limit set Main supplier: TOWN OF COLFAX · 2,552 people · 2019
Highest in the city: 15.84 µg/L — ZONE 2 WATER SYSTEM INC. · 1,344 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 10.09 µg/L No EPA limit set Highest in the city: ZONE 2 WATER SYSTEM INC. · 1,344 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 0.4980 µg/L No EPA limit set Main supplier: TOWN OF COLFAX · 2,552 people · 2019
Highest in the city: 9.78 µg/L — ZONE 2 WATER SYSTEM INC. · 1,344 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 6.6 µg/L No EPA limit set Highest in the city: ZONE 2 WATER SYSTEM INC. · 1,344 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 5.275 µg/L No EPA limit set Highest in the city: ZONE 2 WATER SYSTEM INC. · 1,344 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 1.575 µg/L No EPA limit set Main supplier: TOWN OF COLFAX · 2,552 people · 2019
Highest in the city: 3.8 µg/L — ZONE 2 WATER SYSTEM INC. · 1,344 people · 2019 | 2/2 | SYR4 |
| Lead | 3.2 µg/L 21% of the EPA limit 15 µg/L Main supplier: TOWN OF COLFAX · 2,552 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 2.86 µg/L No EPA limit set Highest in the city: ZONE 2 WATER SYSTEM INC. · 1,344 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 2.05 pCi/L No EPA limit set Main supplier: TOWN OF COLFAX · 2,552 people · 2017
Highest in the city: 2.61 pCi/L — ZONE 2 WATER SYSTEM INC. · 1,344 people · 2018 | 2/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.6900 µg/L 12% of the EPA limit 6 µg/L Main supplier: TOWN OF COLFAX · 2,552 people · 2017
Highest in the city: 1.79 µg/L — ZONE 2 WATER SYSTEM INC. · 1,344 people · 2018 | 2/2 | SYR4 |
| Arsenic | 1.116 µg/L 11% of the EPA limit 10 µg/L Highest in the city: ZONE 2 WATER SYSTEM INC. · 1,344 people · 2018 | 1/2 | SYR4 |
| Bromoform | 0.8645 µg/L No EPA limit set Highest in the city: ZONE 2 WATER SYSTEM INC. · 1,344 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.8308 pCi/L 17% of the EPA limit 5 pCi/L Main supplier: TOWN OF COLFAX · 2,552 people · 2018 | 2/2 | SYR4 |
| Monobromoacetic Acid | 0.4400 µg/L No EPA limit set Highest in the city: ZONE 2 WATER SYSTEM INC. · 1,344 people · 2019 | 1/2 | SYR4 |
| Pentachlorophenol | 0.2200 µg/L 22% of the EPA limit 1 µg/L Main supplier: TOWN OF COLFAX · 2,552 people · 2017 | 1/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: TOWN OF COLFAX · 2,552 people · 2023
Highest in the city: 0.0045 mg/L — ZONE 2 WATER SYSTEM INC. · 1,344 people · 2025 | 2/2 | 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 Colfax
| Supplier | Population served |
|---|---|
| TOWN OF COLFAX | 2,552 |
| ZONE 2 WATER SYSTEM INC. | 1,344 |
Frequently asked questions about Colfax tap water
Is Colfax tap water safe to drink?
EPA testing detected 22 contaminants in the water serving Colfax. 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 Colfax?
2 public water suppliers report drinking-water monitoring for Colfax, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Colfax's water?
The contaminants EPA monitoring detected in Colfax include Fluoride, Nitrate-Nitrite, Copper, 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.