Downey, California Water Quality Report
Water quality data for 9 water systems serving 311,053 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 88.6 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 886% | Above guideline |
| PFBA | 0.010 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.009 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHpA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.021 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.011 | 0.010 ug/L | 0.001 ug/L(EWG) | 110% | Above limit |
| PFOA | 0.016 | 0.004 ug/L | 0.090 ug/L(EWG) | 400% | Above limit |
| PFOS | 0.059 | 0.004 ug/L | 0.300 ug/L(EWG) | 1475% | Above limit |
| PFPeA | 0.027 | 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 (9)
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Unknown
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Resolved Violations (132)
03
Jan 1, 2021 — Dec 31, 2021
03
Jan 1, 2021 — Dec 31, 2021
52
Oct 1, 2019
52
Oct 1, 2019
52
Oct 1, 2019
+ 127 more resolved violations
Frequently Asked Questions
Is Downey tap water safe to drink?
Downey'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 Downey tap water?
9 contaminants have been detected in Downey's water supply across 9 water systems. See the full contaminant table above for details.
How can I improve my water quality in Downey?
Install a water filter rated for the specific contaminants found in Downey's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Downey have any water quality violations?
Yes, Downey currently has 9 active violations. See the violations section above for details.