C
65

Fair Water Quality

Ceres, CA 95307

Stanislaus County · Population served: 54,751 · Data updated March 2026

Water Systems Serving This Area

🌊
CANTUA CREEK VINEYARDS, IV, LLC.
Groundwater · Pop. 52
PWSID: CA1009051
🌊
MONTEREY PARK TRACT CSD
Groundwater · Pop. 186
PWSID: CA5000389
🏔
CERES, CITY OF
Surface water · Pop. 54,513
PWSID: CA5010028

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
3.2
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

7 detected 2 above EPA limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFOS24.0 ppt4 ppt4 pptExceeded
PFOA12.0 ppt4 ppt4 pptExceeded
PFPeA8.4 pptNo standardUnregulated
PFHxA7.4 pptNo standard400 pptUnregulated
PFBS6.6 ppt2000 ppt100 pptBelow limit
PFHxS5.7 ppt10 ppt10 pptBelow limit
PFHpA4.7 pptNo standardUnregulated

Violation History (Last 5 Years)

7Total (5yr)
6Health-Based
0Major

Water Quality Summary

Understanding Your Water in Ceres

Tap water quality in Ceres, California (95307) receives an overall grade of C (Fair) with a score of 65 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 16 points below the California state average of 81. The area is served by 3 water systems providing water to approximately 54,751 people, using surface water and groundwater sources. Testing has found elevated levels of Lead that warrant attention. Notably, 2 PFAS compounds exceed EPA limits — a significant concern given the persistent nature of these chemicals. Over the past 5 years, water systems here have accumulated 7 violations, including 6 health-based violations.

Your Score 65/100 C
vs State 16 pts below California avg (81)
vs National 10 pts below national avg (75)

What a Grade C Means

A score of 65/100 indicates fair water quality in Ceres, CA. While the water meets minimum federal standards, there are noteworthy concerns — either elevated contaminant levels approaching regulatory limits, a moderate violation history, or both. Residents may want to review specific contaminant data and consider targeted filtration, especially for sensitive groups like children and pregnant women.

Surface water: sourced from rivers, lakes, or reservoirs
Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

⚠️

Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

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.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

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

Frequently Asked Questions

Tap water in Ceres, California receives a grade of C (Fair) with a score of 65/100. While it generally meets minimum federal standards, there are some areas of concern including violation history or elevated contaminant levels. Sensitive populations (children, pregnant women, elderly) may want to consider additional filtration.

ZIP code 95307 is served by 3 water systems using surface water, groundwater sources, providing water to approximately 54,751 people. Multiple source types mean your water may come from a blend of surface and underground sources.

Lead was detected at 3.2 ppb in Ceres, California. While this is below the EPA action level of 15 ppb, it exceeds the health guideline of 1 ppb recommended by health organizations. Consider a certified lead filter, especially if you have young children.

Yes — 7 PFAS compounds were detected in water serving Ceres, California, and 2 exceed EPA maximum contaminant levels. PFAS are persistent chemicals linked to cancer, immune system effects, and developmental issues. A reverse osmosis or activated carbon filter certified for PFAS removal is recommended.

Water systems serving Ceres, California have received 7 violations in the last 5 years, including 6 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.

Based on detected contaminants (lead, PFAS), residents in Ceres, California should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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