What was found in Comanche'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 |
|---|---|---|---|
| Chlorite | 719.5 µg/L 72% of the EPA limit 1000 µg/L Highest in the city: UPPER LEON RIVER MWD · 2,919 people · 2019 | 1/2 | SYR4 |
| Nitrate | 380 µg/L 3.8% of the EPA limit 10000 µg/L Highest in the city: UPPER LEON RIVER MWD · 2,919 people · 2019 | 1/2 | SYR4 |
| Fluoride | 191 µg/L 4.8% of the EPA limit 4000 µg/L Highest in the city: UPPER LEON RIVER MWD · 2,919 people · 2019 | 1/2 | SYR4 |
| Copper | 172 µg/L 13% of the EPA limit 1300 µg/L Main supplier: CITY OF COMANCHE · 4,211 people · 2017 | 2/2 | SYR4 |
| Cyanide | 138 µg/L 69% of the EPA limit 200 µg/L Highest in the city: UPPER LEON RIVER MWD · 2,919 people · 2019 | 1/2 | SYR4 |
| TTHM | 119.8 µg/L 150% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: CITY OF COMANCHE · 4,211 people · 2019 | 2/2 | SYR4 |
| Barium | 96.61 µg/L 4.8% of the EPA limit 2000 µg/L Highest in the city: UPPER LEON RIVER MWD · 2,919 people · 2019 | 1/2 | SYR4 |
| Bromoform | 56 µg/L No EPA limit set Main supplier: CITY OF COMANCHE · 4,211 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 53.2 µg/L 89% of the EPA limit 60 µg/L Main supplier: CITY OF COMANCHE · 4,211 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 37.82 µg/L No EPA limit set Main supplier: CITY OF COMANCHE · 4,211 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 35 µg/L No EPA limit set Main supplier: CITY OF COMANCHE · 4,211 people · 2019 | 2/2 | SYR4 |
| Chloroform | 29.44 µg/L No EPA limit set Main supplier: CITY OF COMANCHE · 4,211 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 26.48 µg/L No EPA limit set Main supplier: CITY OF COMANCHE · 4,211 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 21.6 µg/L No EPA limit set Main supplier: CITY OF COMANCHE · 4,211 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 7.955 µg/L No EPA limit set Main supplier: CITY OF COMANCHE · 4,211 people · 2019
Highest in the city: 13.56 µg/L — UPPER LEON RIVER MWD · 2,919 people · 2019 | 2/2 | SYR4 |
| Lead | 8.962 µg/L 60% of the EPA limit 15 µg/L Main supplier: CITY OF COMANCHE · 4,211 people · 2017 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 8.32 pCi/L No EPA limit set Highest in the city: UPPER LEON RIVER MWD · 2,919 people · 2018 | 1/2 | SYR4 |
| Trichloroacetic Acid | 7.62 µg/L No EPA limit set Main supplier: CITY OF COMANCHE · 4,211 people · 2019 | 2/2 | SYR4 |
| Selenium | 7.192 µg/L 14% of the EPA limit 50 µg/L Highest in the city: UPPER LEON RIVER MWD · 2,919 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 5.26 µg/L No EPA limit set Main supplier: CITY OF COMANCHE · 4,211 people · 2019 | 2/2 | SYR4 |
| Arsenic | 2.792 µg/L 28% of the EPA limit 10 µg/L Highest in the city: UPPER LEON RIVER MWD · 2,919 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1 pCi/L 20% of the EPA limit 5 pCi/L Highest in the city: UPPER LEON RIVER MWD · 2,919 people · 2012 | 1/2 | SYR4 |
| Chromium | 0.6400 µg/L 0.6% of the EPA limit 100 µg/L Highest in the city: UPPER LEON RIVER MWD · 2,919 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.5800 µg/L 9.7% of the EPA limit 6 µg/L Highest in the city: UPPER LEON RIVER MWD · 2,919 people · 2019 | 1/2 | SYR4 |
| Atrazine | 0.0820 µg/L 2.7% of the EPA limit 3 µg/L Highest in the city: UPPER LEON RIVER MWD · 2,919 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0072 mg/L 48% of the EPA limit 0.0150 mg/L Main supplier: CITY OF COMANCHE · 4,211 people · 2026 | 2/2 | LCR |
| Pfba | 0.0068 µg/L No EPA limit set Main supplier: CITY OF COMANCHE · 4,211 people · 2024 | 1/2 | 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 Comanche
| Supplier | Population served |
|---|---|
| CITY OF COMANCHE | 4,211 |
| UPPER LEON RIVER MWD | 2,919 |
Frequently asked questions about Comanche tap water
Is Comanche tap water safe to drink?
EPA testing detected 27 contaminants in the water serving Comanche. 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 Comanche?
2 public water suppliers report drinking-water monitoring for Comanche, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Comanche's water?
The contaminants EPA monitoring detected in Comanche include Chlorite, Nitrate, Fluoride, Copper, Cyanide. 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.