Drinking Water Systems in GRINNELL, Iowa

7 water systems are reported for this city, with a combined service population of 14,224. The systems have 38 EPA violation records in the five-year period ending June 30, 2026.

Water Systems Serving GRINNELL

EPA Contaminant Categories in Historical Violation Records

Coliform (TCR)25 records
Revised Total Coliform Rule13 records
Radium-22611 records
Consumer Confidence Rule8 records
Gross Alpha7 records
Haloacetic Acids (HAA5)7 records
Total Trihalomethanes (TTHMs)6 records
Public Notice5 records
Nitrate5 records
Arsenic3 records

Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.