Marana, Arizona Water Quality Report
Water quality data for 8 water systems serving 18,969 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 43.6 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 436% | Above guideline |
| PFBS | 0.003 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.021 | 0.010 ug/L | 0.001 ug/L(EWG) | 207% | Above limit |
| PFOA | 0.006 | 0.004 ug/L | 0.090 ug/L(EWG) | 158% | Above limit |
| PFOS | 0.018 | 0.004 ug/L | 0.300 ug/L(EWG) | 447% | Above limit |
| PFPeA | 0.003 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
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 (7)
75
Jul 25, 2025
66
Jan 1, 2025
66
Jan 1, 2025
45
Apr 9, 2021
45
Apr 9, 2021
72
Oct 1, 2013
71
Jul 1, 2013
Resolved Violations (493)
4B
Nov 1, 2024
4B
Nov 1, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
+ 488 more resolved violations
Frequently Asked Questions
Is Marana tap water safe to drink?
Marana's water has 3 contaminants detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Marana tap water?
7 contaminants have been detected in Marana's water supply across 8 water systems. See the full contaminant table above for details.
How can I improve my water quality in Marana?
Install a water filter rated for the specific contaminants found in Marana's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Marana have any water quality violations?
Yes, Marana currently has 74 active violations. See the violations section above for details.