What was found in Hutto'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 |
|---|---|---|---|
| Fluoride | 3500 µg/L 88% of the EPA limit 4000 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2017 | 2/3 | SYR4 |
| Nitrate | 2730 µg/L 27% of the EPA limit 10000 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 2/3 | SYR4 |
| Nitrate-Nitrite | 2410 µg/L 24% of the EPA limit 10000 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2015 | 2/3 | SYR4 |
| Copper | 390.9 µg/L 30% of the EPA limit 1300 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2017
Highest in the city: 749.199999999999 µg/L — ROUND ROCK RANCH PUD UTILITY COMPANY · 285 people · 2017 | 3/3 | SYR4 |
| Cyanide | 30 µg/L 15% of the EPA limit 200 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2017
Highest in the city: 137 µg/L — CITY OF HUTTO · 29,580 people · 2019 | 2/3 | SYR4 |
| TTHM | 92.1 µg/L 115% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 3/3 | SYR4 |
| Barium | 63.83 µg/L 3.2% of the EPA limit 2000 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2019
Highest in the city: 90.07 µg/L — CITY OF HUTTO · 29,580 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 41.6 µg/L 69% of the EPA limit 60 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 3/3 | SYR4 |
| Chloroform | 40.55999999999999 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 3/3 | SYR4 |
| Lithium | 38.6 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2024 | 2/3 | UCMR-5 |
| Bromodichloromethane | 31.74 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 3/3 | SYR4 |
| Nitrite | 30 µg/L 3% of the EPA limit 1000 µg/L Highest in the city: CITY OF HUTTO · 29,580 people · 2015 | 1/3 | SYR4 |
| Dibromochloromethane | 28.19 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 21.5 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 19.019999999999996 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 13.51 pCi/L 90% of the EPA limit 15 pCi/L Main supplier: JONAH WATER SUD · 29,861 people · 2017 | 1/3 | SYR4 |
| Bromoform | 10.75 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 8.709999999999999 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2019
Highest in the city: 8.915 µg/L — ROUND ROCK RANCH PUD UTILITY COMPANY · 285 people · 2019 | 3/3 | SYR4 |
| Gross Beta Particle Activity | 7.4399999999999995 pCi/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2017 | 2/3 | SYR4 |
| Lead | 5.962499999999995 µg/L 40% of the EPA limit 15 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2017
Highest in the city: 7.24 µg/L — CITY OF HUTTO · 29,580 people · 2017 | 3/3 | SYR4 |
| Monochloroacetic Acid | 6.119999999999999 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 2/3 | SYR4 |
| Monobromoacetic Acid | 2.15 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2019
Highest in the city: 4.56 µg/L — CITY OF HUTTO · 29,580 people · 2019 | 2/3 | SYR4 |
| Selenium | 3.39 µg/L 6.8% of the EPA limit 50 µg/L Highest in the city: CITY OF HUTTO · 29,580 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 3.3639999999999994 pCi/L 67% of the EPA limit 5 pCi/L Main supplier: JONAH WATER SUD · 29,861 people · 2017 | 1/3 | SYR4 |
| Arsenic | 3.25 µg/L 33% of the EPA limit 10 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 1/3 | SYR4 |
| Vinyl Chloride | 3.2 µg/L 160% of the EPA limit, at the 95th percentile of samples — 2 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 1/3 | SYR4 |
| Xylenes, Total | 1.545 µg/L 0% of the EPA limit 10000 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 1/3 | SYR4 |
| Combined Uranium | 1.1 µg/L 3.7% of the EPA limit 30 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2017 | 1/3 | SYR4 |
| Dalapon | 1 µg/L 0.5% of the EPA limit 200 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 1/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.6300 µg/L 11% of the EPA limit 6 µg/L Highest in the city: CITY OF HUTTO · 29,580 people · 2019 | 1/3 | SYR4 |
| Chromium | 0.5190 µg/L 0.5% of the EPA limit 100 µg/L Highest in the city: CITY OF HUTTO · 29,580 people · 2019 | 1/3 | SYR4 |
| Ethylbenzene | 0.5000 µg/L 0.1% of the EPA limit 700 µg/L Main supplier: JONAH WATER SUD · 29,861 people · 2019 | 1/3 | SYR4 |
| Atrazine | 0.2617 µg/L 8.7% of the EPA limit 3 µg/L Highest in the city: CITY OF HUTTO · 29,580 people · 2019 | 1/3 | SYR4 |
| Pfpea | 0.0212 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2024 | 1/3 | UCMR-5 |
| Pfba | 0.0158 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2024 | 1/3 | UCMR-5 |
| PFBS | 0.0093 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2024 | 1/3 | UCMR-5 |
| Pfhxa | 0.0092 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2024 | 1/3 | UCMR-5 |
| PFOS | 0.0057 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2024 | 1/3 | UCMR-5 |
| PFHXS | 0.0056 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2024 | 1/3 | UCMR-5 |
| PFOA | 0.0051 µg/L No EPA limit set Main supplier: JONAH WATER SUD · 29,861 people · 2024 | 1/3 | UCMR-5 |
| Lead | 0.0025 mg/L 17% of the EPA limit 0.0150 mg/L Main supplier: JONAH WATER SUD · 29,861 people · 2023 | 3/3 | 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 Hutto
| Supplier | Population served |
|---|---|
| JONAH WATER SUD | 29,861 |
| CITY OF HUTTO | 29,580 |
| ROUND ROCK RANCH PUD UTILITY COMPANY | 285 |
Frequently asked questions about Hutto tap water
Is Hutto tap water safe to drink?
EPA testing detected 41 contaminants in the water serving Hutto. 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 Hutto?
3 public water suppliers report drinking-water monitoring for Hutto, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Hutto's water?
The contaminants EPA monitoring detected in Hutto include Fluoride, Nitrate, Nitrate-Nitrite, 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.