Water Quality in Napa, CA (94562)
EPA violation data for public water systems serving ZIP code 94562.
No Health-Based Violations
None of the 12 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.
12
Water Systems
2
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (12)
Napa, City Of
American Canyon, City Of
Phelps Vineyards
Opus One Winery
All resolvedRudd Wines, Inc., Dba Rudd
All resolvedCardinale Estate
Groth Vineyards & Winery
Gamble Family Vineyards Winery
Far Niente Winery
Tpwc Dba Quarry Lake Winery
Oakville Grade Winery
Castle Trove, Inc.
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2023
How Does This Compare?
Napa (94562) 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.