Water Quality in GUATAY, CA (91931)
EPA violation data for public water systems serving ZIP code 91931.
24
Total Violations
22
Health-Based
2
Monitoring / Reporting
23
Resolved
What does this mean?
23 of 24 violations have been resolved. 22 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 2 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.
Violations Detail (24 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Combined Uranium | Health-Based | N/A | 68 | Sep 30, 2023 | Resolved | N/A |
| Combined Uranium | Health-Based | N/A | 71 | Sep 30, 2023 | Resolved | N/A |
| Combined Uranium | Health-Based | N/A | 76 | Jun 30, 2023 | Resolved | N/A |
| Combined Uranium | Health-Based | N/A | 130 | Jun 30, 2023 | Resolved | N/A |
| Combined Uranium | Health-Based | N/A | 110 | Dec 31, 2022 | Resolved | N/A |
| Combined Uranium | Health-Based | N/A | 55 | Dec 31, 2022 | Resolved | N/A |
| Combined Uranium | Health-Based | N/A | 41 | Dec 31, 2022 | Resolved | N/A |
| Nitrate | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Combined Uranium | Health-Based | N/A | 64 | Sep 30, 2022 | Resolved | N/A |
| Combined Uranium | Health-Based | N/A | 100 | Sep 30, 2022 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2023(4)
Combined Uranium
01
Combined Uranium
01
Combined Uranium
01
Combined Uranium
01
2022(10)
Combined Uranium
01
Combined Uranium
01
Combined Uranium
01
Nitrate
03
Combined Uranium
01
Combined Uranium
01
Combined Uranium
01
Combined Uranium
01
Combined Uranium
01
Combined Uranium
01
How Does This Compare?
GUATAY (91931) has 24 recorded violations, including 22 health-based. 1 remains unresolved. Consider testing your tap water independently for added peace of mind.
Recommended Water Filters
Based on the contaminants detected in your area, these filter types may help improve your water quality.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove.