Water Quality Testing
Modesto, CA Water Quality Testing Results
Drinking water quality data for Modesto, CA based on official EPA compliance records. This page covers all 6 EPA-tracked water systems serving Modesto.
No current health violations on record
No open health-based violations are recorded for Modesto's water providers. Water meets current federal standards.
Overall Water Quality — Modesto
No Concerns Detected
Water meets all safety standards with no detected exceedances.
Overall rating reflects the worst risk level among all utilities serving Modesto. Individual utility pages have full violation details.
Water utilities serving Modesto, CA
The following utilities serve Modesto based on EPA service-area data. Your water bill is the most reliable way to confirm your provider.
Water Quality in Modesto
No active contaminant violations
No health-based contaminant violations are currently recorded for Modesto's water providers. Review each utility's Consumer Confidence Report for full test results.
Explore Water Quality in Modesto
City of Modesto - Grayson
Violation history, PFAS records, and official source links
City of Modesto - Salida
Violation history, PFAS records, and official source links
City of Modesto
Violation history, PFAS records, and official source links
PFAS monitoring records — California
3 water systems in California with EPA UCMR 5 records
Lead in California drinking water
State-specific lead data, violation utilities, and testing guidance
PFAS in California drinking water
State-specific PFAS data, MCL context, and treatment options
Certified water testing labs in California
Labs certified for PFAS (EPA 533/537.1), lead, and bacteria testing
Water treatment options
Reverse osmosis, activated carbon, and filtration guides with cost ranges
Data sources and methodology
How WaterUtilityReport.com sources and validates official EPA data
Common Questions About Modesto Drinking Water
Is Modesto tap water safe to drink?
No open health-based violations recorded for Modesto water providers
Does Modesto have PFAS records?
3 water systems serving Modesto have EPA UCMR 5 PFAS records
What official contamination records exist for Modesto utilities?
Official EPA SDWIS violations and UCMR 5 PFAS sampling records with source links
How do I get my water tested in California?
Find state-certified labs for PFAS, lead, nitrate, and bacteria testing in California
What treatment options remove Modesto water contaminants?
Reverse osmosis, activated carbon, and whole-home filtration guides
What is the overall water quality rating for Modesto?
California state overview — utility directory, violations, and PFAS data
Public drinking water datasets may not include every recent test, private well result, household plumbing issue, or local advisory. Use this page as a starting point, not as a substitute for official guidance, your utility's Consumer Confidence Report, or professional testing.
Water Utility Report summarizes public records from official federal, state, utility, or testing datasets where available. For urgent health or compliance questions, contact your utility, local health department, or the EPA directly. How Water Utility Report uses public drinking water data
Independent Water Testing
Get your water tested by a certified lab
EPA compliance data shows what utilities report — an independent test confirms what's actually coming out of your tap. Certified labs in California can test for PFAS, lead, nitrates, and dozens of other contaminants.
Modesto Water FAQs
Related Pages
Data Sources & Provenance
All data on this page is sourced from official U.S. government or public datasets.
Modesto at a Glance
Providers
Service area match is likely but not guaranteed. Your water bill is the most reliable way to confirm your provider.