Water Quality in Rancho Cucamonga, CA (92415)
EPA violation data for public water systems serving ZIP code 92415.
Active Health Violations
34 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 88% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
29
Water Systems
39
Violations (5yr)
34
Health-Based
Location
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Water Systems Serving This Area (29)
Chino Basin Mwd
San Gabriel Valley Wc - Fontana
San Bernardino City
Cucamonga Valley Water District
Ontario Municipal Utilities Company
Victorville Water District
San Bernardino Valley Wd
East Valley Water District
West Valley Water District
Hesperia Wd
Park Moabi
Calico Ghost Town
Sbdno County Service Area 64
Sbdno County Service Area 70j
Glen Helen Water System
Gilbert Street Complex
Sbdno County Service Area 70 Cedar Glen
All resolvedCsa 70 W-3 Hacienda
17 health-basedCsa 42 Oro Grande
Csa 70 W-4 Pioneertown
All resolvedCsa 70-F Morongo
17 health-basedLucerne Valley Parks & Recreation
Mr T & B Bbq
That Creative Cafe
Hinkley Senior Rec Center
Vidal Water Co
Prado Regional Park
Csa 29 Midway Park
Mojave River Forks Regional Park
Contaminants Found
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2025
How Does This Compare?
Rancho Cucamonga (92415) has more violations than 88% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 39.
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.
Whole House Carbon Filter
A solid baseline for improving overall water quality. Reduces chlorine, sediment, and many common contaminants throughout your entire home.
Targets:Chlorine, Sediment, Taste & Odor
Look for:NSF/ANSI 42 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.