Dedicated to Future Success of TCWA’s Groundwater Under the Direct Influence of Surface Water

The Tri-County Water Authority produces, treats and delivers wholesale water to 14 cities and water districts in Jackson, Cass and Bates Counties of Missouri. TCWA is a not-for-profit corporation and wholesale supplier of water; water recipients have voting membership in the organization.

In the early 1990s, TCWA purchased property along the Missouri River and constructed a 2.5-million-gallons-a-day lime softening treatment plant, booster pump station and several miles of transmission main from the Missouri River in eastern Independence to Harrisonville, Missouri. This is when we started working with TCWA and have been collaborating through each expansion of the plant and related transmission operations ever since.

• 2006 – The water treatment plant was expanded to 10.5 MGD by adding a horizontal collector well to the four vertical wells, aeration, solids contact primary clarifier, filter facility, chlorine contact basin, 1 MGD clear well, new high-service pumping building, office improvements, 30-inch transmission main to a new 5 MGD ground storage tank, and a new booster pump station facility.
• 2013 - TCWA evaluated options to provide an additional 10 MGD to existing customers and one new customer. They purchased property east of the existing plant site for the application of lime residuals and additional wells. They built three new vertical wells on the new property, along with two additional treatment trains at the plant that can provide 5 MGD of treatment and filtration each, as well as a new chlorine contact basin, clear well and additional pumping. 
• 2017 - TCWA developed a lime solids drying facility to recycle the lime residuals leftover from the treatment process. These lime residuals are beneficial for farmers to increase the pH of their soils. Providing dry lime residuals is important for farmers as they can reuse their current equipment to incorporate the lime solids into the soil instead of having to buy or rent new equipment to transport and incorporate the wet residuals. The facility allows TCWA to dry the lime solids and facilitates easy loading into transport vehicles.

The HDR-designed facilities produce and distribute a total of 20.5 MGD of water to TCWA’s 14 customers.