The Cottage Grove Water Utility is continuously maintaining and upgrading the infrastructure required to bring the residents and businesses of the City a safe and abundant supply of water. 

Annually, the City issues a report to advise residents of where their water comes from and what is in their drinking water.

2017 Water Quality Report (PDF)    
2018 Water Quality Report (PDF)
2019 Water Quality Report (PDF)
2020 Water Quality Report (PDF)

Water Quality / Hardness (mg/L = milligrams per liter or parts per million)

  • 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)

Previous year Water Quality Reports: