Located at the mouth of the Big Cottonwood Canyon, the Big Cottonwood WTP is one of three water treatment facilities providing treated water to Salt Lake City (SLC), Utah. The utility distributes water through about 1,300 miles of transmission and distribution pipe to over 90,500 connections.

Colorado Springs, Colorado, enjoys some of the highest quality drinking water in the country, with most of its water coming from high country snowmelt. Despite its pristine origin in the mountains, the water at the far end of the distribution system is prone to developing trihalomethanes (THMs) due to low turnover and high water age.

While the addition of chlorine is one of the safest and most effective means for water disinfection, under certain circumstances chlorine in combination with naturally occurring organic compounds in water can lead to the formation of undesirable disinfection byproducts (DBPs).

Eastern Municipal Water District (EMWD) serves about 142,000 customers in Riverside County, California. The EMWD service area is one of the largest for any water district in arid southern California. On the drinking water side, EMWD manages two water treatment plants and over 15 reservoirs. With 70% of the district’s water coming from the Metropolitan Water District with chloramine disinfection, EMWD has become reliant on chloramine disinfection to manage long transmission lines and longer detention times due to on‐going water scarcity.