Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Archived | 1987-09-24 → 1991-09-23 |
| MCL | Health-based | Archived | 1984-05-31 → 1984-08-30 |
| MR | Monitoring | Unaddressed | 2026-01-01 |
| MR | Monitoring | Resolved | 2024-03-01 → 2024-03-31 |
| MR | Monitoring | Resolved | 2024-03-01 → 2024-03-31 |
| MR | Monitoring | Resolved | 2023-01-01 |
| MR | Monitoring | Resolved | 2023-01-01 |
| MR | Monitoring | Resolved | 2021-10-24 |
| MR | Monitoring | Resolved | 2021-10-24 |
| MR | Monitoring | Resolved | 2021-10-01 → 2022-09-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 289 µg/L 22% of the EPA limit 1300 µg/L | 20/25 | SYR4 | 2013–2018 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 11/11 | LCR | 2025 |
| TTHM | 13 µg/L 16% of the EPA limit 80 µg/L | 8/8 | SYR4 | 2012–2019 |
| Lead | 7.7 µg/L 51% of the EPA limit 15 µg/L | 5/25 | SYR4 | 2013–2018 |
| Total Haloacetic Acids (HAA5) | 2.2 µg/L 3.7% of the EPA limit 60 µg/L | 2/8 | SYR4 | 2012–2019 |
| Bromodichloromethane | 1.7 µg/L No EPA limit set | 1/1 | SYR4 | 2019 |
| Bromoform | 1.4 µg/L No EPA limit set | 1/1 | SYR4 | 2019 |
| Chloroform | 0.9000 µg/L No EPA limit set | 1/1 | SYR4 | 2019 |
| Dibromochloromethane | 2.5 µg/L No EPA limit set | 1/1 | SYR4 | 2019 |
5 contaminants tested, none detected
Utility contact
Frequently asked questions about La Cholla Airpark
Is La Cholla Airpark tap water safe to drink?
EPA monitoring detected 9 contaminants in La Cholla Airpark's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in La Cholla Airpark's water?
EPA monitoring detected Copper, Lead, TTHM, Lead, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does La Cholla Airpark serve?
La Cholla Airpark reports serving 250 people in Arizona, per its EPA record.
Has La Cholla Airpark had any water quality violations?
The EPA has 156 violations on file for La Cholla Airpark, of which 2 are health-based (a contaminant limit or required treatment was breached) and 1 remain open. The rest are monitoring or reporting failures.
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.