Maricopa, Arizona Water Quality Report
Water quality data for 42 water systems serving 117,085 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 263.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 2630% | Above guideline |
| PFBS | 0.006 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxS | 0.004 | 0.010 ug/L | 0.001 ug/L(EWG) | 40% | Within limit |
| PFOS | 0.005 | 0.004 ug/L | 0.300 ug/L(EWG) | 125% | Above limit |
Recommended Water Filters
Based on the contaminants detected in your water supply, these filtration systems are recommended:
Reverse Osmosis (RO)
Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.
Up to 99% PFAS removal
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Compliance & Violations
Active Violations (3)
76
Sep 27, 2025
75
Jul 12, 2025
75
Apr 17, 2025
Resolved Violations (497)
1A
Aug 1, 2025 — Aug 31, 2025
1A
Aug 1, 2025 — Aug 31, 2025
1A
Aug 1, 2025 — Aug 31, 2025
75
Jul 19, 2025
75
Jul 19, 2025
+ 492 more resolved violations
Frequently Asked Questions
Is Maricopa tap water safe to drink?
Maricopa's water has 1 contaminant detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Maricopa tap water?
4 contaminants have been detected in Maricopa's water supply across 42 water systems. See the full contaminant table above for details.
How can I improve my water quality in Maricopa?
Install a water filter rated for the specific contaminants found in Maricopa's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Maricopa have any water quality violations?
Yes, Maricopa currently has 359 active violations. See the violations section above for details.