Water Quality in Rancho Cucamonga, CA (92304)
EPA violation data for public water systems serving ZIP code 92304.
No Health-Based Violations
None of the 10 water systems serving this ZIP have any violations in the past 5 years.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
10
Water Systems
0
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (10)
Chino Basin Mwd
Groundwater 300,000 people served
0 violations
San Gabriel Valley Wc - Fontana
Surface water 237,700 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
San Bernardino City
Groundwater 214,665 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Cucamonga Valley Water District
Surface water 211,069 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Ontario Municipal Utilities Company
Purchased surface water 185,010 people served
0 violations
Lead tested: 0.6 ppb (limit: 15 ppb) ✓
Victorville Water District
Purchased surface water 135,983 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
San Bernardino Valley Wd
Groundwater 109,608 people served
0 violations
East Valley Water District
Surface water 108,629 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
West Valley Water District
Surface water 104,498 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Hesperia Wd
Groundwater 100,744 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Lead & Copper Levels
Lead (Pb)
Within limit0 ppb measured
Action level: 15 ppb
Sampled: Jan 2023
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.