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 | Resolved | 2025-04-01 → 2025-06-30 |
| MCL | Health-based | Resolved | 2025-04-01 → 2025-06-30 |
| MCL | Health-based | Resolved | 2025-04-01 → 2025-06-30 |
| MCL | Health-based | Resolved | 2025-04-01 → 2025-06-30 |
| TT | Health-based | Resolved | 2024-10-17 |
| TT | Health-based | Resolved | 2024-10-17 |
| TT | Health-based | Resolved | 2024-10-17 |
| TT | Health-based | Resolved | 2024-10-17 |
| MCL | Health-based | Resolved | 2019-01-01 → 2019-03-31 |
| MCL | Health-based | Resolved | 2019-01-01 → 2019-03-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 230 µg/L 18% of the EPA limit 1300 µg/L
worst single sample: 1210 µg/L | 146/162 | SYR4 | 2013–2019 |
| TTHM | 90.57 µg/L 113% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 106 µg/L | 107/107 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 26.2 µg/L 44% of the EPA limit 60 µg/L
worst single sample: 36 µg/L | 106/106 | SYR4 | 2012–2019 |
| Arsenic | 4.905 µg/L 49% of the EPA limit 10 µg/L
worst single sample: 11 µg/L | 60/60 | SYR4 | 2012–2019 |
| Lead | 15 µg/L 100% of the EPA limit 15 µg/L
worst single sample: 380 µg/L | 41/162 | SYR4 | 2013–2019 |
| Nitrate | 1227.5 µg/L 12% of the EPA limit 10000 µg/L
worst single sample: 1250 µg/L | 30/32 | SYR4 | 2012–2019 |
| Bromodichloromethane | 20.06 µg/L No EPA limit set
worst single sample: 21.1 µg/L | 17/17 | SYR4 | 2019 |
| Bromoform | 4.48 µg/L No EPA limit set
worst single sample: 6.8 µg/L | 17/17 | SYR4 | 2019 |
| Chloroform | 29.04 µg/L No EPA limit set
worst single sample: 29.6 µg/L | 17/17 | SYR4 | 2019 |
| Dibromochloromethane | 17.42 µg/L No EPA limit set
worst single sample: 18.3 µg/L | 17/17 | SYR4 | 2019 |
| Chlorite | 515 µg/L 52% of the EPA limit 1000 µg/L
worst single sample: 530 µg/L | 16/16 | SYR4 | 2019 |
| Dibromoacetic Acid | 4.025 µg/L No EPA limit set
worst single sample: 4.1 µg/L | 16/16 | SYR4 | 2019 |
| Dichloroacetic Acid | 11.825 µg/L No EPA limit set
worst single sample: 12.5 µg/L | 16/16 | SYR4 | 2019 |
| Trichloroacetic Acid | 8.575 µg/L No EPA limit set
worst single sample: 8.8 µg/L | 16/16 | SYR4 | 2019 |
| Nitrate-Nitrite | 1215 µg/L 12% of the EPA limit 10000 µg/L
worst single sample: 1250 µg/L | 15/16 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 14/14 | LCR | 2023 |
| Xylenes, Total | 10.6 µg/L 0.1% of the EPA limit 10000 µg/L
worst single sample: 13.7 µg/L | 11/29 | SYR4 | 2013–2019 |
| Barium | 130 µg/L 6.5% of the EPA limit 2000 µg/L | 8/8 | SYR4 | 2013–2019 |
| Fluoride | 781.5 µg/L 20% of the EPA limit 4000 µg/L
worst single sample: 820 µg/L | 8/8 | SYR4 | 2013–2019 |
| Selenium | 3.93 µg/L 7.9% of the EPA limit 50 µg/L
worst single sample: 4 µg/L | 8/8 | SYR4 | 2013–2019 |
| Toluene | 6.04 µg/L 0.6% of the EPA limit 1000 µg/L
worst single sample: 6.6 µg/L | 8/29 | SYR4 | 2013–2019 |
| Ethylbenzene | 2.245 µg/L 0.3% of the EPA limit 700 µg/L
worst single sample: 2.3 µg/L | 2/29 | SYR4 | 2013–2019 |
| Lithium | 166 µg/L No EPA limit set | 2/2 | UCMR-5 | 2025 |
| Combined Radium (-226 And -228) | 0.4000 pCi/L 8% of the EPA limit 5 pCi/L | 1/8 | SYR4 | 2013–2016 |
87 contaminants tested, none detected
Utility contact
Frequently asked questions about Apache Junction Water District
Is Apache Junction Water District tap water safe to drink?
EPA monitoring detected 24 contaminants in Apache Junction Water District'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 Apache Junction Water District's water?
EPA monitoring detected Copper, TTHM, Total Haloacetic Acids (HAA5), Arsenic, Lead, and others. The full list with the level and data source for each is above.
How many people does Apache Junction Water District serve?
Apache Junction Water District reports serving 15,610 people in Arizona, per its EPA record.
Has Apache Junction Water District had any water quality violations?
The EPA has 660 violations on file for Apache Junction Water District, of which 21 are health-based (a contaminant limit or required treatment was breached) and 0 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.