California
Is California tap water safe to drink?
Mostly yes — California scores 95/100. This report aggregates EPA drinking water data across 6 local systems in California. We found 77 total violations (13 unresolved).
Real-Time Environment
Live: 11:00 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in California.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in California?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Evaluation of municipal compliance and household filtration options in California.
Baby Formula Safety
EPA compliance thresholds and pediatric water precautions for California.
Homebuyer's Perspective
Water system history in California informs property maintenance and private filtration requirements. The high safety score (95/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Residents should monitor Lead (90th percentile) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for California
Based on EPA SDWIS violation records and contaminant test results for all water systems serving California.
Frequently Asked Questions
Is California tap water safe to drink?
Mostly yes — California scores 95/100.
How many water systems serve California?
California is served by 6 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in California?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for California.
What is the water quality score for California?
The water quality score for California is 95 out of 100, based on EPA contaminant data, violation history, and testing results across the 6 systems serving the city.
What are the top contaminants in California?
The top contaminants detected in California include Lead (90th percentile). View detailed information on our contaminants page.
California Water Quality Summary
California, MD receives a water quality score of 95/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 6 public water systems serving the area.
California's water quality is above the national average, with strong compliance records and low contaminant levels. Residents generally receive clean, safe tap water that meets EPA standards.
California's score of 95 is 5 points above the Maryland state average of 90, and above the nationwide average of roughly 78/100 across all U.S. states.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Maryland water quality rankings report →
Key Contaminants
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Water Systems Serving California (6)
Country Lakes
BGreenbrier
ABreton Bay
ACedar Cove
ALexington Park
AWicomico Shores
ACheck Your Specific Address
Water quality can vary by neighborhood in California.
Related
Quick compare in Maryland
Compare California water quality: View all states · Contaminant library · How we score water quality