Water Quality in Hopland, CA (95449)
EPA violation data for public water systems serving ZIP code 95449.
No Health-Based Violations
None of the 4 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are11 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 68% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
1,763
Population
4
Water Systems
11
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (4)
Hopland Reservation Sho-Ka-Wah Casino
Shanel Tribal Utility District
All resolvedFetzer Vineyards
Ray'S Station Winery
Contaminants Found
Used to disinfect water — generally safe at regulated levels.
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2025
Copper (Cu)
Exceeds limitSampled: Jul 2025
How Does This Compare?
Hopland (95449) has more violations than 68% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 11, 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.