Water Quality in Corte Madera, CA (94946)
EPA violation data for public water systems serving ZIP code 94946.
Past Health-Based Violations
4 health-based violations were found in the past 5 years, meaning contaminant levels exceeded federal safety limits. All have since been resolved.
More violations than 48% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
715
Population
8
Water Systems
4
Violations (5yr)
4
Health-Based
Location
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Water Systems Serving This Area (8)
Marin Municipal Water District
North Marin Water District
Skywalker Ranch
U.S. Coast Guard - Pt. Reyes
Nicasio School
Nicasio School
3 health-basedNicasio Valley Ranch Mutual
1 health-basedDevils Gulch Ranch Water System
Contaminants Found
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2022
Copper (Cu)
Exceeds limitSampled: Jan 2022
How Does This Compare?
Corte Madera (94946) has more violations than 48% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 4.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.