Drinking Water Systems in MASON CITY, Iowa
1 water system are reported for this city, with a combined service population of 27,338. The systems have 1 EPA violation record in the five-year period ending June 30, 2026.
Water Systems Serving MASON CITY
EPA Contaminant Categories in Historical Violation Records
Radium-22618 records
1,1-Dichloroethylene3 records
trans-1,2-Dichloroethylene3 records
Chloramine3 records
Benzene3 records
2,4-D3 records
Dalapon3 records
Simazine3 records
Coliform (TCR)3 records
Carbon tetrachloride2 records
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.