C
58

Fair Water Quality

Laton, CA 93242

Fresno County · Population served: 1,313 · Data updated March 2026

Water Systems Serving This Area

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ZONNEVELD DAIRY - CEDAR
Groundwater · Pop. 100
PWSID: CA1000369
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ZONNEVELD DAIRY - CERINI
Groundwater · Pop. 62
PWSID: CA1000627
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LATON COMMUNITY SERVICES DISTRICT
Groundwater · Pop. 1,151
PWSID: CA1010020

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
18.0
15 ppb 1 ppb Exceeded

PFAS / Forever Chemicals

3 detected 2 above EPA limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFOA6.2 ppt4 ppt4 pptExceeded
PFOS6.1 ppt4 ppt4 pptExceeded
PFBS3.9 ppt2000 ppt100 pptBelow limit

Violation History (Last 5 Years)

3Total (5yr)
1Health-Based
0Major

Water Quality Summary

Understanding Your Water in Laton

Tap water quality in Laton, California (93242) receives an overall grade of C (Fair) with a score of 58 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 23 points below the California state average of 81. Compared to the national average (75), this area scores significantly lower. The area is served by 3 water systems providing water to approximately 1,313 people, using 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 3 violations, including 1 health-based violations.

Your Score 58/100 C
vs State 23 pts below California avg (81)
vs National 17 pts below national avg (75)

What a Grade C Means

A score of 58/100 indicates fair water quality in Laton, 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.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

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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 Laton, California receives a grade of C (Fair) with a score of 58/100. 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 93242 is served by 3 water systems using groundwater sources, providing water to approximately 1,313 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

Yes — lead levels in Laton, California are 18.0 ppb, which exceeds the EPA action level of 15 ppb. This is a serious concern. We strongly recommend using a certified lead-removal filter for all drinking and cooking water, and having your water independently tested.

Yes — 3 PFAS compounds were detected in water serving Laton, 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 Laton, California have received 3 violations in the last 5 years, including 1 health-based violation. 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 Laton, 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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