What was found in Willow Park'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 | 865.5 µg/L 22% of the EPA limit 4000 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Nitrate | 415 µg/L 4.2% of the EPA limit 10000 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 354.9 µg/L 3.5% of the EPA limit 10000 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Copper | 199.5 µg/L 15% of the EPA limit 1300 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Barium | 110 µg/L 5.5% of the EPA limit 2000 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Nitrite | 94.2 µg/L 9.4% of the EPA limit 1000 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Lithium | 59.5 µg/L No EPA limit set Main supplier: CITY OF WILLOW PARK · 4,936 people · 2024 | 1/1 | UCMR-5 |
| TTHM | 24.96 µg/L 31% of the EPA limit 80 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 15.1 pCi/L 101% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Lead | 8.8115 µg/L 59% of the EPA limit 15 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Bromoform | 8.327 µg/L No EPA limit set Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 7.762 µg/L No EPA limit set Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 7.65 µg/L 13% of the EPA limit 60 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Chloroform | 7.252 µg/L No EPA limit set Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 5.965 pCi/L No EPA limit set Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Chromium | 5.45 µg/L 5.5% of the EPA limit 100 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 4.465 µg/L No EPA limit set Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 4.222 µg/L No EPA limit set Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 4.2 µg/L No EPA limit set Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 3.437 pCi/L 69% of the EPA limit 5 pCi/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 1.7 µg/L No EPA limit set Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Selenium | 1.6 µg/L 3.2% of the EPA limit 50 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 1.27 µg/L 4.2% of the EPA limit 30 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.9000 µg/L 15% of the EPA limit 6 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Arsenic | 0.7200 µg/L 7.2% of the EPA limit 10 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Carbon Tetrachloride | 0.5000 µg/L 10% of the EPA limit 5 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Antimony, Total | 0.3340 µg/L 5.6% of the EPA limit 6 µg/L Main supplier: CITY OF WILLOW PARK · 4,936 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0024 mg/L 16% of the EPA limit 0.0150 mg/L Main supplier: CITY OF WILLOW PARK · 4,936 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 Willow Park
| Supplier | Population served |
|---|---|
| CITY OF WILLOW PARK | 4,936 |
Frequently asked questions about Willow Park tap water
Is Willow Park tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Willow Park. 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 Willow Park?
1 public water supplier report drinking-water monitoring for Willow Park, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Willow Park's water?
The contaminants EPA monitoring detected in Willow Park include Fluoride, Nitrate, Nitrate-Nitrite, Copper, Barium. 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.