Water Quality in SAN RAMON, CA (94583)
EPA violation data for public water systems serving ZIP code 94583.
17
Total Violations
13
Health-Based
4
Monitoring / Reporting
14
Resolved
What does this mean?
14 of 17 violations have been resolved. 13 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 4 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 (17 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Combined Uranium | Health-Based | N/A | 66 | Mar 31, 2025 | Resolved | N/A |
| Combined Uranium | Health-Based | N/A | 59 | Dec 31, 2024 | Resolved | N/A |
| LEAD AND COPPER RULE REVISIONS | Monitoring | N/A | N/A | Oct 16, 2024 | Active | N/A |
| LEAD AND COPPER RULE REVISIONS | Health-Based | N/A | N/A | Oct 16, 2024 | Active | N/A |
| Combined Uranium | Health-Based | N/A | 59 | Sep 30, 2024 | Resolved | N/A |
| Combined Uranium | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Nitrate | Health-Based | N/A | 10.7 | Jun 30, 2024 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Health-Based | N/A | 10.7 | Jun 30, 2024 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Combined Uranium | Monitoring | N/A | N/A | Mar 31, 2024 | Resolved | N/A |
| Combined Uranium | Health-Based | N/A | 34 | Dec 31, 2023 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(1)
Combined Uranium
02
2024(8)
Combined Uranium
02
LEAD AND COPPER RULE REVISIONS
4G
LEAD AND COPPER RULE REVISIONS
2E
Combined Uranium
01
Combined Uranium
03
Nitrate
02
Nitrate
02
Combined Uranium
03
How Does This Compare?
SAN RAMON (94583) has 17 recorded violations, including 13 health-based. 3 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
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.