Water Quality in Chico, CA (95927)
EPA violation data for public water systems serving ZIP code 95927.
Active Health Violations
39 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.
32
Water Systems
47
Violations (5yr)
39
Health-Based
Location
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Water Systems Serving This Area (32)
Del Oro Water Co.-Paradise Pines
Del Oro Water Co-Ferndale
Del Oro Water Company - Strawberry Div.
1 health-basedDel Oro River Island Serv Terr #1
17 health-basedDel Oro Water Co.-Lime Saddle
Del Oro California Pines District
Del Oro Water Co.-Johnson Park
Del Oro Water Co.-Lime Saddle Marina
Del Oro Traver District
4 health-basedDel Oro Water Co.-Stirling Bluffs
Chico Eastside Little League
All resolvedLakeport Cinemas
All resolvedBenbow-Del Oro W.C.
Del Oro Water Co.-Magalia
All resolvedDel Oro Grandview Gardens District
13 health-basedDel Oro Wc - Country Estates Dist
Del Oro Wc - Black Butte District
Del Oro Wc - Arbuckle District
Del Oro Water Co. - Hat Creek District
Del Oro Water Co.-Walnut Ranch
Del Oro Wc - Larkspur Meadows
Del Oro Water Company - Buzztail Dist.
Del Oro Water Co - Metropolitan District
3 health-basedDel Oro River Island Serv Terr #2
All resolvedNorfield Industries
Francis Property Management
1 health-basedBidwell Park--- Caper Acres
Cedar Grove Bidwell Park
Del Oro East Plano District
One Mile Dam Rec Area
Chico Rod & Gun Club
Pine Mountain Water District - Inactive
Contaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2025
How Does This Compare?
Chico (95927) has more violations than 89% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 47.
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.