What was found in Olmito'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 | 812.2 µg/L 81% of the EPA limit 1000 µg/L Main supplier: OLMITO WSC · 8,952 people · 2014 | 1/1 | SYR4 |
| Fluoride | 486 µg/L 12% of the EPA limit 4000 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Nitrate | 300 µg/L 3% of the EPA limit 10000 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Barium | 190.1 µg/L 9.5% of the EPA limit 2000 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Copper | 168.4 µg/L 13% of the EPA limit 1300 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Cyanide | 137 µg/L 69% of the EPA limit 200 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| TTHM | 77.28 µg/L 97% of the EPA limit 80 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Lithium | 77 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2024 | 1/1 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 34.725 µg/L 58% of the EPA limit 60 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 30.12 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 27.295 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 25.47 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Bromoform | 22.08 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Chloroform | 18.26 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 16.925 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 13.8 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 6.17 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Selenium | 4.65 µg/L 9.3% of the EPA limit 50 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 3.83 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Arsenic | 2.1 µg/L 21% of the EPA limit 10 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.566 µg/L 26% of the EPA limit 6 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Lead | 1.409 µg/L 9.4% of the EPA limit 15 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Xylenes, Total | 1.1 µg/L 0% of the EPA limit 10000 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Atrazine | 0.2815 µg/L 9.4% of the EPA limit 3 µg/L Main supplier: OLMITO WSC · 8,952 people · 2019 | 1/1 | SYR4 |
| Pfba | 0.0106 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2025 | 1/1 | UCMR-5 |
| Pfpea | 0.0053 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0049 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2025 | 1/1 | UCMR-5 |
| PFOS | 0.0045 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2025 | 1/1 | UCMR-5 |
| PFHXS | 0.0036 µg/L No EPA limit set Main supplier: OLMITO WSC · 8,952 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: OLMITO WSC · 8,952 people · 2025 | 1/1 | 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 Olmito
| Supplier | Population served |
|---|---|
| OLMITO WSC | 8,952 |
Frequently asked questions about Olmito tap water
Is Olmito tap water safe to drink?
EPA testing detected 30 contaminants in the water serving Olmito. 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 Olmito?
1 public water supplier report drinking-water monitoring for Olmito, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Olmito's water?
The contaminants EPA monitoring detected in Olmito include Chlorite, Fluoride, Nitrate, Barium, Copper. 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.