Water Quality in Concord, CA (94561)
EPA violation data for public water systems serving ZIP code 94561.
Active Health Violations
41 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 89% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
46,368
Population
26
Water Systems
44
Violations (5yr)
41
Health-Based
Location
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Water Systems Serving This Area (26)
Contra Costa Water District
City Of Antioch
Brentwood
City Of Pittsburg
Diablo Water District
Willow Park Marina
15 health-basedBen Kutch
Delta Mutual Water Company
12 health-basedCamino Mobilehome
Oakley Mutual Water Company
14 health-basedBig Oak Mobile Home Park Water
Gas N Save
Kennedy'S Mobile Homes
Mr Joe France
Bethel Baptist Church
Robert Mc Skimming
Knightsen Community Water System
Bethel Missionary Baptist
Dutch Slough Water Works
Beacon West
Delta Kids Center *Cl 2/07
Hertz Water System
Sherman Lake Marina
All resolvedRancho Furniture
Mountain House Bar
Forest Ranch Mobile Park
Contaminants Found
A naturally occurring element that can cause cancer and other health effects at high levels.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2023
How Does This Compare?
Concord (94561) has more violations than 89% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 44.
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.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 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.