The Missouri City Communications Department confirmed the city uses a separate water distribution and treatment system than that used by Houston proper.
“As most of you may be aware, the city of Houston has issued a boil-water notice for most of its service areas," the city announced Nov. 28. "However, this boil-water notice does not apply to Missouri City or its residents/consumers. Our water sources and distribution systems are different.”
Missouri City’s water is serviced by a set of providers, including Fort Bend Water Control and Improvement District No. 2, Harris County-WCID Fondren Road Municipal Utility District, Quail Valley Utility District, Inframark and Si Environmental.
Harris County MUD No. 122, Harris County WCID-Fondren Road MUD and Southwest Harris County MUD No. 1 as well as Quail Valley Utility District all overlap into Missouri City. However, Missouri City Public Works Director and City Engineer Shashi Kumar said those organizations are not receiving or using Houston water, which is primarily pulled from the Trinity River, Lake Livingston, the San Jacinto River, Lake Conroe and Lake Houston. The Evangeline and Chicot aquifers provide for the rest of Houston’s drinking water, according to the city of Houston's drinking water operations website.
The majority of Missouri City’s water is purchased from the Gulf Coast Water Authority and is sourced from the Brazos River as well as a series of aquifers, according to the city’s 2021 drought contingency plan.