Water Treatment Plant
The Hardin Water Treatment is a surface water plant that treats water pumped from the Big Horn River with a capacity of 2,000,000 gallons a day & two 500,000 gallon storage reservoirs.
Sewer Treatment Plant
The Hardin Sewer Treatment Plant has a 1,200,000 gallons per day capacity and uses Aerobic Digestion and Oxidation Systems.
If you have any questions regarding the Water or Wastewater Treatment Plants,
please feel free to contact the City Administrative Offices.