US Water Score: A
| Contaminant | Detected Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| Lead |
0.0
|
15 ppb | 1 ppb | Passed |
Water Quality Summary
Tap water quality in Jamul, California (91935) receives an overall grade of A (Lower record-based concern) with a score of 98 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 6 points above the California state average of 92. Compared to the national average (75), this area performs significantly better. The area is served by 4 water systems providing water to approximately 238,008 people, using surface water and groundwater sources. Over the past 5 years, water systems here have accumulated 21 violations, including 15 health-based violations.
A score of 98/100 means public water-system records for Jamul, CA show relatively few concerns in the US Water Score model. This is an internal score, not an EPA safety rating, and it does not guarantee conditions at any specific tap.
Health Information
Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.
Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.
Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.
If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.
Common Questions
Based on public water-system records, Jamul, California receives an internal US Water Score grade of A (Lower record-based concern) with a score of 98/100. This indicates relatively few system-level concerns in our model, but it is not an EPA safety rating and does not guarantee tap conditions inside individual homes.
ZIP code 91935 is served by 4 water systems using surface water, groundwater sources, providing water to approximately 238,008 people. Multiple source types mean your water may come from a blend of surface and underground sources.
Lead levels in Jamul, California are 0.0 ppb, which is at or below the health guideline of 1 ppb. This is a positive result, though periodic testing is still recommended.
No PFAS ("forever chemicals") were detected in water systems serving Jamul, California during the most recent EPA monitoring period (UCMR5). However, not all water systems have been tested for all PFAS compounds, and new contamination can occur over time.
Water systems serving Jamul, California have received 21 violations in the last 5 years, including 15 health-based violations. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.
Water in Jamul, California shows no major contaminant concerns based on available data. A basic carbon filter can improve taste and reduce chlorine. For extra peace of mind, an NSF-certified pitcher filter or faucet-mount filter provides an affordable layer of protection.
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