What was found in Crown King'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 | 746.5 µg/L 19% of the EPA limit 4000 µg/L Main supplier: CROWN KING WATER COMPANY · 203 people · 2019 | 2/2 | SYR4 |
| Copper | 482 µg/L 37% of the EPA limit 1300 µg/L Main supplier: CROWN KING WATER COMPANY · 203 people · 2019 | 2/2 | SYR4 |
| Barium | 50.75 µg/L 2.5% of the EPA limit 2000 µg/L Main supplier: CROWN KING WATER COMPANY · 203 people · 2019
Highest in the city: 139 µg/L — PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 2/2 | SYR4 |
| Nitrate | 90 µg/L 0.9% of the EPA limit 10000 µg/L Main supplier: CROWN KING WATER COMPANY · 203 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 84 µg/L 0.8% of the EPA limit 10000 µg/L Main supplier: CROWN KING WATER COMPANY · 203 people · 2019 | 1/2 | SYR4 |
| TTHM | 58.58 µg/L 73% of the EPA limit 80 µg/L Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Cadmium | 30.35 µg/L 607% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: CROWN KING WATER COMPANY · 203 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 23.41 µg/L 39% of the EPA limit 60 µg/L Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Chloroform | 20.9 µg/L No EPA limit set Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 14 µg/L No EPA limit set Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Lead | 8.075 µg/L 54% of the EPA limit 15 µg/L Main supplier: CROWN KING WATER COMPANY · 203 people · 2019
Highest in the city: 10.34 µg/L — PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 9.9 µg/L No EPA limit set Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Trichloroacetic Acid | 8.6 µg/L No EPA limit set Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 8.2 µg/L No EPA limit set Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Arsenic | 2.635 µg/L 26% of the EPA limit 10 µg/L Main supplier: CROWN KING WATER COMPANY · 203 people · 2019
Highest in the city: 8.03 µg/L — PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 2/2 | SYR4 |
| Dalapon | 3.6 µg/L 1.8% of the EPA limit 200 µg/L Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 2.3 µg/L No EPA limit set Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Antimony, Total | 1.8 µg/L 30% of the EPA limit 6 µg/L Main supplier: CROWN KING WATER COMPANY · 203 people · 2019 | 2/2 | SYR4 |
| Bromoform | 0.8000 µg/L No EPA limit set Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.8000 pCi/L 16% of the EPA limit 5 pCi/L Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Carbon Tetrachloride | 0.7300 µg/L 15% of the EPA limit 5 µg/L Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Dichloromethane | 0.5100 µg/L 10% of the EPA limit 5 µg/L Highest in the city: PHILADELPHIA WATER SYSTEM · 42 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CROWN KING WATER COMPANY · 203 people · 2024 | 2/2 | 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 Crown King
| Supplier | Population served |
|---|---|
| CROWN KING WATER COMPANY | 203 |
| PHILADELPHIA WATER SYSTEM | 42 |
Frequently asked questions about Crown King tap water
Is Crown King tap water safe to drink?
EPA testing detected 23 contaminants in the water serving Crown King. 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 Crown King?
2 public water suppliers report drinking-water monitoring for Crown King, Arizona to the EPA. Each is listed above with its population served.
What contaminants are in Crown King's water?
The contaminants EPA monitoring detected in Crown King include Fluoride, Copper, Barium, Nitrate, Nitrate-Nitrite. 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.