The Public Works Department operates and maintains two wastewater treatment plants in its service area. Three primary products result from the treatment process of these plants: cleaned and disinfected water, biosolids, and methane gas.
Cleaned and disinfected waterOnce treated by mechanical and biological methods, the wastewater is released back to the Boise River. Our discharge water typically exceeds water quality standards set by the Environmental Protection Agency and the Idaho Department of Environmental Quality.
BiosolidsBiosolids are solids materials removed from the wastewater through treatment. Pathogens in the biosolids are significantly reduced by the treatment process. After we remove a significant amount of water from the resulting material, we transport it to our farm to be reused as fertilizer.
MethaneMethane generated by the treatment process is used to heat water in boilers for process heating and to fuel engines that operate wastewater pumps, thereby offsetting electricity for motor-driven pumps.
Boise City's Wastewater Treatment PlantsWest Boise Wastewater Treatment Plant is rated at 24 million gals/day and runs at approximately 16 million gals/day
Lander Street Wastewater Treatment Plant is rated at 15 million gals/day and runs at approximately 13 million gal/day.
Total capacity for both plants is 39 million gals/day. The West Boise Wastewater Treatment Plant is planned for expansion in 2016.
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