What was found in Hildale'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 |
|---|---|---|---|
| Barium | 807.37 µg/L 40% of the EPA limit 2000 µg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Nitrate | 800 µg/L 8% of the EPA limit 10000 µg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Copper | 755.21 µg/L 58% of the EPA limit 1300 µg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2018 | 1/1 | SYR4 |
| Nitrate-Nitrite | 515 µg/L 5.1% of the EPA limit 10000 µg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2018 | 1/1 | SYR4 |
| Fluoride | 480 µg/L 12% of the EPA limit 4000 µg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Lithium | 71 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2024 | 1/1 | UCMR-5 |
| TTHM | 54.925 µg/L 69% of the EPA limit 80 µg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Bromoform | 35.675 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 25.9 pCi/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 14.965 pCi/L 299% of the EPA limit, at the 95th percentile of samples — 5 pCi/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 14.35 pCi/L 96% of the EPA limit 15 pCi/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 13.305 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 11.275 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 11.265 µg/L 19% of the EPA limit 60 µg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Selenium | 9.095 µg/L 18% of the EPA limit 50 µg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Lead | 8.203 µg/L 55% of the EPA limit 15 µg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2018 | 1/1 | SYR4 |
| Arsenic | 7.85 µg/L 78% of the EPA limit 10 µg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Chromium | 5 µg/L 5% of the EPA limit 100 µg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 2.75 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Cyanide | 2 µg/L 1% of the EPA limit 200 µg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 1.3 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| Chloroform | 0.6000 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2019 | 1/1 | SYR4 |
| PFOS | 0.0260 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2024 | 1/1 | UCMR-5 |
| PFHXS | 0.0220 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2024 | 1/1 | UCMR-5 |
| PFBS | 0.0170 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2024 | 1/1 | UCMR-5 |
| Pfpes | 0.0130 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2024 | 1/1 | UCMR-5 |
| Pfhxa | 0.0120 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2024 | 1/1 | UCMR-5 |
| Pfpea | 0.0043 µg/L No EPA limit set Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: HILDALE - COLORADO CITY · 6,100 people · 2023 | 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 Hildale
| Supplier | Population served |
|---|---|
| HILDALE - COLORADO CITY | 6,100 |
Frequently asked questions about Hildale tap water
Is Hildale tap water safe to drink?
EPA testing detected 29 contaminants in the water serving Hildale. 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 Hildale?
1 public water supplier report drinking-water monitoring for Hildale, Utah to the EPA. Each is listed above with its population served.
What contaminants are in Hildale's water?
The contaminants EPA monitoring detected in Hildale include Barium, Nitrate, Copper, Nitrate-Nitrite, Fluoride. 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.