Water Quality in Rancho Cucamonga, CA (91761)
EPA violation data for public water systems serving ZIP code 91761.
No Health-Based Violations
None of the 25 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are6 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 57% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
62,935
Population
25
Water Systems
6
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (25)
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
Youth Training School
Youth Training School
Mission Land Company
Samoa Village Mobile Home Est
Bluetriton Brands Morongo
All resolvedSan Antonio Winery
All resolvedArtesia Sawdust Products
All resolvedCemex - Alabama
Sunkist Gforest Homeowers
Cemex Construction Materials Or
J Avila
Chino Basin Desalter Auth. - Desalter 2
Chino Basin Desalter Auth. - Desalter 1
Maclin Markets
Fuji Natural Food
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2023
How Does This Compare?
Rancho Cucamonga (91761) has more violations than 57% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 6, 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.