What was found in Terre Haute'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 | 4410 µg/L 44% of the EPA limit 10000 µg/L Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2019
Highest in the city: 8812.5 µg/L — MORRIS MOBILE HOME ESTATES · 75 people · 2019 | 7/7 | SYR4 |
| Nitrate-Nitrite | 4310 µg/L 43% of the EPA limit 10000 µg/L Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2019
Highest in the city: 4525 µg/L — INDIANA AMERICAN WATER - SULLIVAN · 6,598 people · 2019 | 4/7 | SYR4 |
| Fluoride | 863 µg/L 22% of the EPA limit 4000 µg/L Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2017 | 7/7 | SYR4 |
| Copper | 697.55 µg/L 54% of the EPA limit 1300 µg/L Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2019 | 7/7 | SYR4 |
| Barium | 86.63 µg/L 4.3% of the EPA limit 2000 µg/L Highest in the city: FCI & FPC - TERRE HAUTE · 1,390 people · 2017 | 5/7 | SYR4 |
| TTHM | 58.62 µg/L 73% of the EPA limit 80 µg/L Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2019 | 3/7 | SYR4 |
| Total Haloacetic Acids (HAA5) | 26.35 µg/L 44% of the EPA limit 60 µg/L Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2019 | 3/7 | SYR4 |
| Lead | 4.45 µg/L 30% of the EPA limit 15 µg/L Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2019
Highest in the city: 16.5 µg/L — FCI & FPC - TERRE HAUTE · 1,390 people · 2019 | 4/7 | SYR4 |
| Gross Beta Particle Activity | 7.67 pCi/L No EPA limit set Highest in the city: TRAILS EDGE APTS · 260 people · 2017 | 1/7 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.8990 pCi/L 6% of the EPA limit 15 pCi/L Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2016
Highest in the city: 4.028 pCi/L — TRAILS EDGE APTS · 260 people · 2019 | 4/7 | SYR4 |
| Selenium | 3.595 µg/L 7.2% of the EPA limit 50 µg/L Highest in the city: ROCKY ACRES MOBILE HOME PARK · 50 people · 2018 | 3/7 | SYR4 |
| Chromium | 2.1 µg/L 2.1% of the EPA limit 100 µg/L Highest in the city: TRAILS EDGE APTS · 260 people · 2018 | 2/7 | SYR4 |
| Xylenes, Total | 1.6 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: MORRIS MOBILE HOME ESTATES · 75 people · 2018 | 1/7 | SYR4 |
| Arsenic | 0.8000 µg/L 8% of the EPA limit 10 µg/L Highest in the city: FCI & FPC - TERRE HAUTE · 1,390 people · 2017 | 2/7 | SYR4 |
| Thallium, Total | 0.6000 µg/L 30% of the EPA limit 2 µg/L Highest in the city: MORRIS MOBILE HOME ESTATES · 75 people · 2018 | 1/7 | SYR4 |
| Combined Uranium | 0.3860 µg/L 1.3% of the EPA limit 30 µg/L Highest in the city: TRAILS EDGE APTS · 260 people · 2017 | 1/7 | SYR4 |
| Atrazine | 0.1000 µg/L 3.3% of the EPA limit 3 µg/L Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2018 | 1/7 | SYR4 |
| Simazine | 0.0990 µg/L 2.5% of the EPA limit 4 µg/L Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2018 | 1/7 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2025
Highest in the city: 0.0070 mg/L — LEISURE ACRES MOBILE HOME PARK · 49 people · 2024 | 7/7 | LCR |
| PFOS | 0.0052 µg/L No EPA limit set Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2024 | 1/7 | UCMR-5 |
| Pfpea | 0.0041 µg/L No EPA limit set Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2024 | 1/7 | UCMR-5 |
| PFBS | 0.0030 µg/L No EPA limit set Main supplier: INDIANA AMERICAN WATER - TERRE HAUTE · 67,765 people · 2024 | 1/7 | UCMR-5 |
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 Terre Haute
| Supplier | Population served |
|---|---|
| INDIANA AMERICAN WATER - TERRE HAUTE | 67,765 |
| INDIANA AMERICAN WATER - SULLIVAN | 6,598 |
| FCI & FPC - TERRE HAUTE | 1,390 |
| TRAILS EDGE APTS | 260 |
| MORRIS MOBILE HOME ESTATES | 75 |
| ROCKY ACRES MOBILE HOME PARK | 50 |
| LEISURE ACRES MOBILE HOME PARK | 49 |
Frequently asked questions about Terre Haute tap water
Is Terre Haute tap water safe to drink?
EPA testing detected 22 contaminants in the water serving Terre Haute. 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 Terre Haute?
7 public water suppliers report drinking-water monitoring for Terre Haute, Indiana to the EPA. Each is listed above with its population served.
What contaminants are in Terre Haute's water?
The contaminants EPA monitoring detected in Terre Haute include Nitrate, Nitrate-Nitrite, Fluoride, Copper, 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.