News Flash

Happening in Missouri City

Posted on: May 1, 2020

MCTX RSWTP Closing May 4-7 for Ongoing Expansion During Shutdown MUD-Operated Wells Will Be Utilized


As part of the ongoing Phase II expansion of the Missouri City Regional Surface Water Treatment Plant (RSWTP), service from the facility will be temporarily halted from Monday, May 4 through Thursday, May 7. During the planned shutdown, water will be supplied by area municipal utility districts (MUDs) from ground water wells.

Residents are urged to conserve water and limit irrigation and outdoor water usage during this period.

To update the community on the issue prior to the temporary shutdown, staff has compiled a list of frequently asked questions and responses on the issue:

Why is the plant being temporarily shut down at this time?
The RSWTP, Missouri City’s largest capital improvement project to date, is currently being expanded from its 10 million gallons a day (MGD) capacity, to 20 MGD. The construction is being done to meet growth demands in the area and, to facilitate the new development, the plant will be shutdown intermittently to facilitate progress and integration with the expanded plant units.

What communities are affected by the shutdown?
The areas affected are: all of Sienna, the portions of Riverstone in Missouri City’s ETJ and inside Missouri City limits, and Colony Lakes Subdivision. See map below for more details:


How will these areas receive water during this temporary shutdown?
During this temporary shutdown, existing groundwater wells (operated and managed by Municipal Utility Districts—MUDs) will be used to provide water supplies in the affected areas.

Does this issue impact businesses and schools?
Yes, those that are located in the areas specified above. If consumers within this impacted area have any concerns or questions regarding their water supply, they should contact the MUD customer service line at 832-490-1600.

Will the water supplied by the MUDs be safe?
According to the MUD operators, the “treated ground/well water” meets or exceeds regulatory standards for potable water and is safe for consumption and use.

Will there be any taste/odor/color differences?
In general, when there is a change in water supply source from “treated surface water” to “treated ground/well water,” consumers may notice a subtle difference in the taste/odor/color of the water.

City staff and the MUDs monitor and test water quality daily to ensure that water being delivered to residents meets all applicable standards.

For updates, please watch the City website:, like us on Facebook—fb/MissouriCityTX, follow us on Twitter, Instagram, Snapchat—@MissouriCityTX andNextdoor, watch Missouri City Television (Ch. 16 on Comcast and Ch. 99 on AT&T U-verse) or download the MCTX Mobile app (available for free in Google Play and the Apple app store).

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