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Johnston Water

The City of Johnston receives water from Des Moines Water Works. Des Moines Water Works (DMWW) is responsible for the initial treatment to insure the best quality before distributing it to the city as a wholesale customer. As it reaches our connection, the Public Works Department is responsible for maintaining the high quality of water until it flows out of your faucet.

The Johnston Water/Sewer Department maintains and repairs approximately 102 miles of water mains, 63.69 miles of sanitary sewer lines, 1,167 hydrants, 2,250 water valves, 1,536 manholes, and two storage tanks that hold an estimated three million gallons of water.