Water Quality in SHERMAN OAKS, CA (91423)
EPA violation data for public water systems serving ZIP code 91423.
5
Total Violations
2
Health-Based
3
Monitoring / Reporting
3
Resolved
What does this mean?
3 of 5 violations have been resolved. 2 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 3 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 (5 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Groundwater Rule | Health-Based | N/A | N/A | Oct 23, 2025 | Active | N/A |
| Groundwater Rule | Health-Based | N/A | N/A | Oct 23, 2025 | Active | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Sep 30, 2021 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Sep 30, 2021 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Sep 30, 2021 | Resolved | N/A |
Violation Timeline
2025(2)
Groundwater Rule
45
Groundwater Rule
45
2021(3)
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
How Does This Compare?
SHERMAN OAKS (91423) has 5 recorded violations, including 2 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.
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove.