The Cottage Grove Utility Department is continuously maintaining and upgrading the infrastructure required to bring the residents and businesses of the City a safe and abundant supply of water.
Water Quality/Hardness (milligrams per liter or parts per million (mg/L))
Chlorine: 0.4 mg/L
Fluoride: 1.1 mg/L
Alkalinity: 236 mg/L
pH: 7.6
Hardness: 298 mg/L (17 grains per gallon)
Water Quality Reports
Water Quality Report - 2021
Water Quality Report - 2020
Water Quality Report - 2019
Water Quality Report - 2018