Water Quality in Nogales, AZ (85621)
EPA violation data for public water systems serving ZIP code 85621.
Active Health Violations
5 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 88% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
21,593
Population
17
Water Systems
41
Violations (5yr)
5
Health-Based
Location
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Water Systems Serving This Area (17)
Nogales City Of
2 health-basedLiberty Water Rio Rico
All resolvedAz State Pks Patagonia Lake
The Grand Acres
1 health-basedKino Ranch 1
Kino Ranch 2
1 health-basedTaliesin West
1 health-basedUsfs-Cnf-Nogalas Rs
Su Casa Produce Co
Farmers Sales/Vohland
Cummings Ford
Nogales Int Airport
Buena Vista Public Service Cor
Nogales, Wastewater Plan
Coronado Nf-Atascosa Lo
Santa Cruz Health Dept
Santa Cruz County Sonoita Complex Ws
Contaminants Found
Used to disinfect water — generally safe at regulated levels.
A naturally occurring element that can cause cancer and other health effects at high levels.
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2023
How Does This Compare?
Nogales (85621) has more violations than 88% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 41.
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
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.