Water Quality in Rancho Cucamonga, CA (92347)
EPA violation data for public water systems serving ZIP code 92347.
No Health-Based Violations
None of the 15 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are2 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 29% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
766
Population
15
Water Systems
2
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (15)
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
Hinkley Market & Gas
Hinkley Valley Wc
Pg & E Pipeline Operation
Mojave Solar Project Alpha Power Plant
All resolvedMojave Solar Project Beta Power Plant
All resolvedContaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
Copper (Cu)
Exceeds limitSampled: Jul 2024
How Does This Compare?
Rancho Cucamonga (92347) has more violations than 29% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 2, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.