Douglas, Arizona Water Quality Report
Water quality data for 5 water systems serving 19,448 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 152.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 1520% | Above guideline |
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Compliance & Violations
Active Violations (11)
71
Jul 1, 2025
71
Jul 1, 2025
66
Jan 1, 2025
75
Dec 20, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
34
Oct 21, 2022
34
Oct 21, 2022
34
Oct 21, 2022
Resolved Violations (489)
72
Oct 2, 2024
72
Oct 2, 2024
27
Jan 1, 2024 — Jan 31, 2024
27
Jan 1, 2024 — Jan 31, 2024
45
Oct 14, 2023
+ 484 more resolved violations
Frequently Asked Questions
Is Douglas tap water safe to drink?
Douglas's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Douglas tap water?
1 contaminants have been detected in Douglas's water supply across 5 water systems. See the full contaminant table above for details.
How can I improve my water quality in Douglas?
Install a water filter rated for the specific contaminants found in Douglas's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Douglas have any water quality violations?
Yes, Douglas currently has 60 active violations. See the violations section above for details.