Drinking Water Systems in NOGALES, Arizona
5 water systems are reported for this city, with a combined service population of 25,023. The systems have 24 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving NOGALES
EPA Contaminant Categories in Historical Violation Records
Arsenic43 records
Coliform (TCR)31 records
Chlorine27 records
Consumer Confidence Rule26 records
Nitrate20 records
Haloacetic Acids (HAA5)17 records
Total Trihalomethanes (TTHMs)15 records
Benzene14 records
Chlordane14 records
Atrazine13 records
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.