Water Quality in SIGNAL HILL, CA (90755)
EPA violation data for public water systems serving ZIP code 90755.
12
Total Violations
10
Health-Based
2
Monitoring / Reporting
10
Resolved
What does this mean?
10 of 12 violations have been resolved. 10 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 (12 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Feb 28, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Feb 28, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Jan 31, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Jan 31, 2025 | Resolved | N/A |
| Consumer Confidence Rule | Monitoring | N/A | N/A | Jun 30, 2023 | Active | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | May 31, 2023 | Active | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Apr 30, 2022 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Apr 30, 2022 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(6)
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
2023(2)
Consumer Confidence Rule
71
Lead and Copper Rule
52
How Does This Compare?
SIGNAL HILL (90755) has 12 recorded violations, including 10 health-based. 2 remain 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.