Grand Terrace, California Water Quality Report
Water quality data for 1 water system serving 20,188 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 11.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 110% | Above guideline |
| PFBA | 0.010 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.013 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHpA | 0.008 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.014 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.014 | 0.010 ug/L | 0.001 ug/L(EWG) | 140% | Above limit |
| PFOA | 0.018 | 0.004 ug/L | 0.090 ug/L(EWG) | 450% | Above limit |
| PFOS | 0.019 | 0.004 ug/L | 0.300 ug/L(EWG) | 475% | Above limit |
| PFPeA | 0.017 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFPeS | 0.004 | No federal limit | — | — | No federal 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 (4)
52
Oct 1, 2024
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (2)
22
May 1, 1998 — May 31, 1998
22
May 1, 1998 — May 31, 1998
Frequently Asked Questions
Is Grand Terrace tap water safe to drink?
Grand Terrace'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 Grand Terrace tap water?
10 contaminants have been detected in Grand Terrace's water supply across 1 water system. See the full contaminant table above for details.
How can I improve my water quality in Grand Terrace?
Install a water filter rated for the specific contaminants found in Grand Terrace's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Grand Terrace have any water quality violations?
Yes, Grand Terrace currently has 4 active violations. See the violations section above for details.