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 |
|---|---|---|---|
| Nitrate | 1719.5 µg/L 17% of the EPA limit 10000 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2019
Highest in the city: 7829 µg/L — SHADELAND MOBILE HOME PARK · 200 people · 2019 | 4/6 | SYR4 |
| Nitrate-Nitrite | 1640 µg/L 16% of the EPA limit 10000 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2014
Highest in the city: 3800 µg/L — SHADELAND MOBILE HOME PARK · 200 people · 2017 | 3/6 | SYR4 |
| Copper | 795.5 µg/L 61% of the EPA limit 1300 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2019
Highest in the city: 1711 µg/L — WILDCAT HIGHLANDS · 360 people · 2018 | 6/6 | SYR4 |
| Fluoride | 677.8 µg/L 17% of the EPA limit 4000 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2017
Highest in the city: 890 µg/L — WILDCAT HIGHLANDS · 360 people · 2019 | 6/6 | SYR4 |
| Barium | 216.55 µg/L 11% of the EPA limit 2000 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2017
Highest in the city: 889 µg/L — WILDCAT HIGHLANDS · 360 people · 2019 | 6/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 5.46 µg/L 9.1% of the EPA limit 60 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2019
Highest in the city: 27.865 µg/L — WILDCAT HIGHLANDS · 360 people · 2018 | 3/6 | SYR4 |
| Lithium | 12.8 µg/L No EPA limit set Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2023 | 1/6 | UCMR-5 |
| Cyanide | 10 µg/L 5% of the EPA limit 200 µg/L Highest in the city: ROYAL OAKS ESTATES LLC · 95 people · 2017 | 1/6 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2017
Highest in the city: 9.7 µg/L — WILDCAT HIGHLANDS · 360 people · 2019 | 5/6 | SYR4 |
| TTHM | 4.78 µg/L 6% of the EPA limit 80 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2019
Highest in the city: 7.45 µg/L — WILDCAT HIGHLANDS · 360 people · 2018 | 3/6 | SYR4 |
| Xylenes, Total | 6.02 µg/L 0.1% of the EPA limit 10000 µg/L Highest in the city: WILDCAT HIGHLANDS · 360 people · 2019 | 1/6 | SYR4 |
| Chromium | 1.58 µg/L 1.6% of the EPA limit 100 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2017
Highest in the city: 6 µg/L — ROYAL OAKS ESTATES LLC · 95 people · 2017 | 3/6 | SYR4 |
| Lead | 5.885 µg/L 39% of the EPA limit 15 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2019 | 3/6 | SYR4 |
| Gross Beta Particle Activity | 5.171 pCi/L No EPA limit set Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2016 | 3/6 | SYR4 |
| Combined Uranium | 1.6886 µg/L 5.6% of the EPA limit 30 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2016
Highest in the city: 3.2321 µg/L — ROYAL OAKS ESTATES LLC · 95 people · 2016 | 2/6 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.55 pCi/L 17% of the EPA limit 15 pCi/L Highest in the city: ROYAL OAKS ESTATES LLC · 95 people · 2016 | 4/6 | SYR4 |
| Ethylbenzene | 1.2 µg/L 0.2% of the EPA limit 700 µg/L Highest in the city: WILDCAT HIGHLANDS · 360 people · 2019 | 1/6 | SYR4 |
| trans-1,2-Dichloroethylene | 0.9000 µg/L 0.9% of the EPA limit 100 µg/L Highest in the city: WILDCAT HIGHLANDS · 360 people · 2019 | 1/6 | SYR4 |
| 1,1,1-Trichloroethane | 0.7800 µg/L 0.4% of the EPA limit 200 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2019 | 1/6 | SYR4 |
| Trichloroethylene | 0.7710 µg/L 15% of the EPA limit 5 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2019 | 1/6 | SYR4 |
| Tetrachloroethylene | 0.6000 µg/L 12% of the EPA limit 5 µg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2019 | 1/6 | SYR4 |
| Bromodichloromethane | 0.5000 µg/L No EPA limit set Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2015 | 1/6 | SYR4 |
| Lead | 0.00045 mg/L 3% of the EPA limit 0.0150 mg/L Main supplier: LAFAYETTE WATER WORKS · 70,835 people · 2028
Highest in the city: 0.00063 mg/L — KINGS RIDGE HOMEOWNERS ASSOCIATION · 90 people · 2023 | 6/6 | 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 WATER WORKS | 70,835 |
| WILDCAT HIGHLANDS | 360 |
| SHADELAND MOBILE HOME PARK | 200 |
| MODERNAIRE TRAILER COURT | 105 |
| ROYAL OAKS ESTATES LLC | 95 |
| KINGS RIDGE HOMEOWNERS ASSOCIATION | 90 |
Frequently asked questions about Lafayette tap water
Is Lafayette tap water safe to drink?
EPA testing detected 23 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?
6 public water suppliers report drinking-water monitoring for Lafayette, Indiana 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 Nitrate, Nitrate-Nitrite, Copper, Fluoride, Barium. 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.