What was found in Tecumseh'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 | 458.5 µg/L 4.6% of the EPA limit 10000 µg/L Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019
Highest in the city: 782.5 µg/L — BROOKSVILLE · 90 people · 2018 | 2/2 | SYR4 |
| Fluoride | 244 µg/L 6.1% of the EPA limit 4000 µg/L Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2017 | 1/2 | SYR4 |
| Nitrate | 150 µg/L 1.5% of the EPA limit 10000 µg/L Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2012 | 1/2 | SYR4 |
| Barium | 139.4 µg/L 7% of the EPA limit 2000 µg/L Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2017 | 2/2 | SYR4 |
| TTHM | 124 µg/L 155% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 77.72 µg/L 130% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019 | 2/2 | SYR4 |
| Chloroform | 71.24 µg/L No EPA limit set Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 49.24 µg/L 164% of the EPA limit, at the 95th percentile of samples — 30 µg/L Highest in the city: BROOKSVILLE · 90 people · 2018 | 1/2 | SYR4 |
| Dichloroacetic Acid | 38.62 µg/L No EPA limit set Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 36.415 µg/L No EPA limit set Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 36.205 µg/L No EPA limit set Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019 | 2/2 | SYR4 |
| Copper | 26 µg/L 2% of the EPA limit 1300 µg/L Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019
Highest in the city: 33.365 µg/L — BROOKSVILLE · 90 people · 2017 | 2/2 | SYR4 |
| Lithium | 30 µg/L No EPA limit set Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2024 | 1/2 | UCMR-5 |
| Dibromochloromethane | 20.35 µg/L No EPA limit set Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 8.0025 pCi/L No EPA limit set Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2015
Highest in the city: 17.425 pCi/L — BROOKSVILLE · 90 people · 2018 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.318 pCi/L 29% of the EPA limit 15 pCi/L Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2015
Highest in the city: 15.82 pCi/L — BROOKSVILLE · 90 people · 2018 | 2/2 | SYR4 |
| Monochloroacetic Acid | 8.442 µg/L No EPA limit set Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019
Highest in the city: 9.555 µg/L — BROOKSVILLE · 90 people · 2017 | 2/2 | SYR4 |
| Dibromoacetic Acid | 8.52 µg/L No EPA limit set Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019 | 2/2 | SYR4 |
| Bromoform | 8.445 µg/L No EPA limit set Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.5697 pCi/L 11% of the EPA limit 5 pCi/L Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2015
Highest in the city: 4.57 pCi/L — BROOKSVILLE · 90 people · 2018 | 2/2 | SYR4 |
| Arsenic | 4.4 µg/L 44% of the EPA limit 10 µg/L Highest in the city: BROOKSVILLE · 90 people · 2013 | 1/2 | SYR4 |
| Cadmium | 1.8 µg/L 36% of the EPA limit 5 µg/L Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2017 | 1/2 | SYR4 |
| Monobromoacetic Acid | 1.365 µg/L No EPA limit set Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0084 µg/L No EPA limit set Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2025 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: TECUMSEH UTILITY AUTHORITY · 6,098 people · 2026 | 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 Tecumseh
| Supplier | Population served |
|---|---|
| TECUMSEH UTILITY AUTHORITY | 6,098 |
| BROOKSVILLE | 90 |
Frequently asked questions about Tecumseh tap water
Is Tecumseh tap water safe to drink?
EPA testing detected 25 contaminants in the water serving Tecumseh. 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 Tecumseh?
2 public water suppliers report drinking-water monitoring for Tecumseh, Oklahoma to the EPA. Each is listed above with its population served.
What contaminants are in Tecumseh's water?
The contaminants EPA monitoring detected in Tecumseh include Nitrate-Nitrite, Fluoride, Nitrate, 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.