Water Quality in Hollister, CA (95043)
EPA violation data for public water systems serving ZIP code 95043.
Active Health Violations
4 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 73% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
805
Population
22
Water Systems
15
Violations (5yr)
4
Health-Based
Location
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Water Systems Serving This Area (22)
Hollister, City Of
1 health-basedSunnyslope County Water Dist
Nps Lassen Volcanic Np
33rd District Agricultural Association
Henry Coe Park Rabbit Spring
Thousand Trails San Benito Preserve
1 health-basedPinnacles National Park-East District
Pinnacles National Park Campground
Pinnacles National Park-West District
Paicines Ranch
1 health-basedPaicines Water System
Paicines Water Company
Paicines Water Company
Antelope Forestry Station
Almaden Labor Camp Panoche Rd
Willow Grove Union Elementary School
1 health-basedBeaver Dam Cdf Station
Almaden Labor Camp Cienega Rd
Panoche Elementary School
Jefferson Elementary School
Panoche Elementary School
Alba Coast Winery
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Approaching limitSampled: Jan 2022
How Does This Compare?
Hollister (95043) has more violations than 73% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 15.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 certified
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.