Public Works - Water Quality Division

Water Treatment Plant

The Water Treatment Plant processes all of the City's drinking water. We operate the treatment facilities and distribution system and maintain all of the facilities required to treat, pressurize and store the City's water. The Division is also responsible for quality control testing and monitoring.

This Division's certified operators and laboratory personnel provide control over the water treatment process 24 hours per day to ensure that our water always exceeds the requirements of the Federal Safe Drinking water Act (SDWA) and the Administrative Rules of Montana (ARM).

Water Quality Reports

The City of Billings Water Treatment Plant houses a State Certified Laboratory responsible for testing and monitoring the water quality.

Tours of the Water Treatment Plant are available with 48 hours notice. Schedule a tour.

Water Reclamation Facility

Facility Overview
In 1945, the first steps were taken to provide for the treatment of the City of Billings wastewater. Subsequently, a 15 million gallon per day (MGD) treatment plant was constructed, and was placed in service in 1950. In the early 1970s, the treatment plant was enlarged to provide both primary and secondary treatment for an average wastewater flow of 26 MGD and a maximum flow of 40 MGD.

Current Construction

The Water Reclamation Facility is currently under construction to increase capacity and upgrade treatment to remove nitrogen and phosphorus from the wastewater to meet more stringent state discharge requirements. The facility will begin removing nitrogen and phosphorus in 2019 with final completion of the construction projected for early 2020.


  *** Tours are temporarily suspended until the completion of the project upgrades.

Integrated Water Plan