City of Moorhead Treats Water with Ozone

The city of Moorhead uses ozone as the primary disinfectant and treatment agent for its municipal water supply. The plant opened in 1994, and the ozone process kicked in the following year. Plant workers add ozone to the water after it has undergone softening to extract minerals. The water is then filtered before being piped around the city. The treatment process also involves a little fluoride and chlorine thrown in for good measure, with the fluoride aiding in the fight against tooth decay and chlorine serving as a secondary disinfectant.

The city treats about 4.3 million gallons of water a day. Red River water enters the system at a site near Elm Park in south Moorhead. Moorhead takes about 85 percent of its water from the Red River and 15 percent from wells.It takes about two hours for the water to make the three-mile journey to the treatment plant, where it is given its shot of ozone. Besides disinfecting, ozone breaks down organic material in river water that might cause taste and odor.


Bossier City Adds Ozone for Disinfection and Taste and Odor Control

Bossier City is involved in a $72 million project to double the capacity of their water treatment plant. In addition to construction of a new facility, the project will include a rehabilitation of the existing water treatment plant, which is expected to be completed in 2013. The expansion of the water plant will increase capacity to 45 million gallons of water a day.

During the rehabilitation the existing plant will receive new lime feed equipment to soften the water and an ozone injection system to provide a more efficient way to remove bacteria and improve the taste and odor of the water.

The original water treatment facility was constructed in 1958 and supported six million gallons of water per day, an amount that has grown over the years to support increases in water demands. It currently supports 25 million gallons per day.