What was found in Cornville'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 |
|---|---|---|---|
| Nitrate | 230 µg/L 2.3% of the EPA limit 10000 µg/L Main supplier: COTTONWOOD MUNICIPAL WATER VSF1 · 2,194 people · 2019
Highest in the city: 11000 µg/L — MOUNTAIN VU RV COURT · 80 people · 2019 | 3/4 | SYR4 |
| Nitrate-Nitrite | 210 µg/L 2.1% of the EPA limit 10000 µg/L Main supplier: COTTONWOOD MUNICIPAL WATER VSF1 · 2,194 people · 2017
Highest in the city: 7837.5 µg/L — MOUNTAIN VU RV COURT · 80 people · 2018 | 2/4 | SYR4 |
| Barium | 547.5 µg/L 27% of the EPA limit 2000 µg/L Main supplier: COTTONWOOD MUNICIPAL WATER VSF1 · 2,194 people · 2017 | 3/4 | SYR4 |
| Copper | 323.85 µg/L 25% of the EPA limit 1300 µg/L Main supplier: COTTONWOOD MUNICIPAL WATER VSF1 · 2,194 people · 2018
Highest in the city: 399.4 µg/L — OAK CREEK VALLEY · 450 people · 2018 | 3/4 | SYR4 |
| Fluoride | 198.5 µg/L 5% of the EPA limit 4000 µg/L Main supplier: COTTONWOOD MUNICIPAL WATER VSF1 · 2,194 people · 2017
Highest in the city: 339 µg/L — CS OAK CREEK PUBLIC SERVICE LLC · 650 people · 2018 | 3/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 48 µg/L 80% of the EPA limit 60 µg/L Highest in the city: CS OAK CREEK PUBLIC SERVICE LLC · 650 people · 2019 | 1/4 | SYR4 |
| Lead | 3.82 µg/L 25% of the EPA limit 15 µg/L Main supplier: COTTONWOOD MUNICIPAL WATER VSF1 · 2,194 people · 2018
Highest in the city: 13.846 µg/L — CS OAK CREEK PUBLIC SERVICE LLC · 650 people · 2017 | 3/4 | SYR4 |
| Arsenic | 8.01 µg/L 80% of the EPA limit 10 µg/L Main supplier: COTTONWOOD MUNICIPAL WATER VSF1 · 2,194 people · 2019
Highest in the city: 11.85 µg/L — OAK CREEK VALLEY · 450 people · 2019 | 3/4 | SYR4 |
| Chromium | 3.18 µg/L 3.2% of the EPA limit 100 µg/L Highest in the city: CS OAK CREEK PUBLIC SERVICE LLC · 650 people · 2018 | 2/4 | SYR4 |
| TTHM | 1.29 µg/L 1.6% of the EPA limit 80 µg/L Main supplier: COTTONWOOD MUNICIPAL WATER VSF1 · 2,194 people · 2019 | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 0.5000 pCi/L 10% of the EPA limit 5 pCi/L Highest in the city: CS OAK CREEK PUBLIC SERVICE LLC · 650 people · 2015 | 1/4 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: COTTONWOOD MUNICIPAL WATER VSF1 · 2,194 people · 2024
Highest in the city: 0.0100 mg/L — CS OAK CREEK PUBLIC SERVICE LLC · 650 people · 2025 | 4/4 | LCR |
Water suppliers serving Cornville
| Supplier | Population served |
|---|---|
| COTTONWOOD MUNICIPAL WATER VSF1 | 2,194 |
| CS OAK CREEK PUBLIC SERVICE LLC | 650 |
| OAK CREEK VALLEY | 450 |
| MOUNTAIN VU RV COURT | 80 |
Frequently asked questions about Cornville tap water
Is Cornville tap water safe to drink?
EPA testing detected 12 contaminants in the water serving Cornville. 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 Cornville?
4 public water suppliers report drinking-water monitoring for Cornville, Arizona to the EPA. Each is listed above with its population served.
What contaminants are in Cornville's water?
The contaminants EPA monitoring detected in Cornville include Nitrate, Nitrate-Nitrite, Barium, Copper, 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.