Water Quality in Los Angeles, CA (91311)
EPA violation data for public water systems serving ZIP code 91311.
No Health-Based Violations
None of the 14 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 36% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
40,898
Population
14
Water Systems
2
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (14)
Griffith Park
Los Angeles-City, Dept. Of Water & Power
Long Beach Utilities Department
Oxnard Water Dept
Ventura Water Department
Ventura Wwd No. 8 - Simi Valley
All resolvedCal American Water Co
All resolvedCity Of Thousand Oaks Water Department
Camarillo Water Dept
Golden State Water Company - Simi Valley
Ventura Cwwd No. 1 - Moorpark
Deep Shadows Ranch
Matts Ranch
Misty Hollow Ranch
Contaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2023
How Does This Compare?
Los Angeles (91311) has more violations than 36% 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.