What was found in Lafayette'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 | 520 µg/L 40% of the EPA limit 1300 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 3515 µg/L — LPWDN FAIRWAY VILLAGE WS · 339 people · 2019 | 13/17 | SYR4 |
| Nitrate-Nitrite | 500 µg/L 5% of the EPA limit 10000 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 1100 µg/L — KINGS COURT MHP WATER SYSTEM · 220 people · 2019 | 6/17 | SYR4 |
| Fluoride | 300 µg/L 7.5% of the EPA limit 4000 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 324 µg/L — LPWD NORTH PRODUCTION FACILITY · 4,122 people · 2019 | 6/17 | SYR4 |
| Barium | 308 µg/L 15% of the EPA limit 2000 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019 | 4/17 | SYR4 |
| Lead | 9.6 µg/L 64% of the EPA limit 15 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 68 µg/L — LPWDN FAIRWAY VILLAGE WS · 339 people · 2019 | 14/17 | SYR4 |
| TTHM | 15.06 µg/L 19% of the EPA limit 80 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 46.85 µg/L — G & J MOBILE HOME ESTATES WATER SYSTEM · 186 people · 2019 | 16/17 | SYR4 |
| Lithium | 37.4 µg/L No EPA limit set Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2025 | 3/17 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 14 µg/L 23% of the EPA limit 60 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 20.9 µg/L — ROYAL MOBILE ESTATES WATER SYSTEM · 141 people · 2019 | 16/17 | SYR4 |
| Monochloroacetic Acid | 15 µg/L No EPA limit set Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 20 µg/L — ROYAL MOBILE ESTATES WATER SYSTEM · 141 people · 2019 | 8/17 | SYR4 |
| Dibromochloromethane | 5.26 µg/L No EPA limit set Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 16.25 µg/L — G & J MOBILE HOME ESTATES WATER SYSTEM · 186 people · 2019 | 16/17 | SYR4 |
| Bromodichloromethane | 4.36 µg/L No EPA limit set Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 14.25 µg/L — G & J MOBILE HOME ESTATES WATER SYSTEM · 186 people · 2019 | 16/17 | SYR4 |
| Chloroform | 3.6 µg/L No EPA limit set Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 11.5 µg/L — G & J MOBILE HOME ESTATES WATER SYSTEM · 186 people · 2019 | 16/17 | SYR4 |
| Dichloroacetic Acid | 2.97 µg/L No EPA limit set Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 10.965 µg/L — LPWDN TOWNSHIP WS · 72 people · 2019 | 16/17 | SYR4 |
| Chromium | 6 µg/L 6% of the EPA limit 100 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 10 µg/L — G & J MOBILE HOME ESTATES WATER SYSTEM · 186 people · 2017 | 4/17 | SYR4 |
| Selenium | 10 µg/L 20% of the EPA limit 50 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019 | 4/17 | SYR4 |
| Bromoform | 3 µg/L No EPA limit set Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 6.88 µg/L — LPWDN HOLIDAY MOBILE ESTATES WS · 426 people · 2019 | 16/17 | SYR4 |
| Arsenic | 2 µg/L 20% of the EPA limit 10 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 5.2 µg/L — LPWD NORTH PRODUCTION FACILITY · 4,122 people · 2019 | 6/17 | SYR4 |
| Dibromoacetic Acid | 2.3 µg/L No EPA limit set Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 4.85 µg/L — KINGS COURT MHP WATER SYSTEM · 220 people · 2019 | 16/17 | SYR4 |
| Gross Beta Particle Activity | 4.382 pCi/L No EPA limit set Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019 | 6/17 | SYR4 |
| Trichloroacetic Acid | 1.99 µg/L No EPA limit set Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 3.185 µg/L — G & J MOBILE HOME ESTATES WATER SYSTEM · 186 people · 2019 | 15/17 | SYR4 |
| Monobromoacetic Acid | 0.6700 µg/L No EPA limit set Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019
Highest in the city: 3.145 µg/L — LPWDN NORTH REGION · 16,833 people · 2019 | 9/17 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 3.02 µg/L 50% of the EPA limit 6 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019 | 3/17 | SYR4 |
| Combined Radium (-226 And -228) | 2.71 pCi/L 54% of the EPA limit 5 pCi/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019 | 5/17 | SYR4 |
| Dalapon | 2.1 µg/L 1.1% of the EPA limit 200 µg/L Highest in the city: LPWD NORTH PRODUCTION FACILITY · 4,122 people · 2019 | 2/17 | SYR4 |
| Oxamyl | 1.6 µg/L 0.8% of the EPA limit 200 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019 | 1/17 | SYR4 |
| P-Dichlorobenzene | 1.532 µg/L 2% of the EPA limit 75 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019 | 1/17 | SYR4 |
| 2,4-D | 0.1700 µg/L 0.2% of the EPA limit 70 µg/L Highest in the city: WEST GATE TRAILER PARK WATER SYSTEM · 219 people · 2019 | 1/17 | SYR4 |
| Endrin | 0.0140 µg/L 0.7% of the EPA limit 2 µg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2019 | 1/17 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: LAFAYETTE UTILITIES WATER SYSTEM · 169,389 people · 2025
Highest in the city: 0.0060 mg/L — G & J MOBILE HOME ESTATES WATER SYSTEM · 186 people · 2023 | 17/17 | 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 Lafayette
| Supplier | Population served |
|---|---|
| LAFAYETTE UTILITIES WATER SYSTEM | 169,389 |
| LPWDN NORTH REGION | 16,833 |
| LPWD NORTH PRODUCTION FACILITY | 4,122 |
| LPWDN SOUTH REGION | 4,032 |
| LPWDN PURCHASE WEST SCOTT | 3,051 |
| LPWDN WILDERNESS TRAIL | 1,644 |
| LPWDN LA NEUVILLE HOLIDAY SUBDIVISION WS | 1,455 |
| LPWDN CARMEL DRIVE | 576 |
| LPWDN HOLIDAY MOBILE ESTATES WS | 426 |
| LPWDN SOUTH PARK | 372 |
| LPWDN FAIRWAY VILLAGE WS | 339 |
| LPWDN GUILLOT VILLAGE | 300 |
| KINGS COURT MHP WATER SYSTEM | 220 |
| WEST GATE TRAILER PARK WATER SYSTEM | 219 |
| G & J MOBILE HOME ESTATES WATER SYSTEM | 186 |
| ROYAL MOBILE ESTATES WATER SYSTEM | 141 |
| LPWDN TOWNSHIP WS | 72 |
Frequently asked questions about Lafayette tap water
Is Lafayette tap water safe to drink?
EPA testing detected 29 contaminants in the water serving Lafayette. 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 Lafayette?
17 public water suppliers report drinking-water monitoring for Lafayette, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Lafayette's water?
The contaminants EPA monitoring detected in Lafayette include Copper, Nitrate-Nitrite, Fluoride, Barium, Lead. 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.