MCTX RSWTP Closed for Phase II Expansion Construction; During Shutdown, MUD-Operated Wells Are Being Utilized

CONTACT: Stacie Walker — 281.403.8530

As part of the Phase II expansion of the Missouri City Regional Surface Water Treatment Plant (RSWTP), service from the facility has been temporarily halted and, in the interim, water is being supplied by area municipal utility districts (MUDs) from ground water wells.

Due to the change in the source, the City has received a number of inquiries from residents and the media about the difference in the water. As a result, staff has compiled a list of frequently asked questions and responses on the issue:

When was the RSWTP temporarily shut down?
Tuesday, Jan. 28.

When is the plant expected to be back online?
By Friday, Feb. 14.

Why was the plant shut down?
According to City officials, the RSWTP is currently being expanded from its 10 million gallons a day (MGD) capacity, to 20 MGD. During this construction, the current 10 MGD plant needs to be shutdown intermittently to facilitate construction 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.

Does this issue impact businesses and schools?
Yes, those that are located in the areas specified above.

How are these areas receiving water now?
During this temporary shutdown, existing ground water wells (operated and managed by the Municipal Utility Districts) are being used to augment potable water supplies in the affected areas.

Is the water safe?
According to the MUD operators, the “treated ground/well water” meets or exceeds regulatory standards for potable water and is safe for consumption.

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.

Were impacted consumers notified?
No, according to City officials, as there was no interruption in water supply.

For updates, please watch the City website:, like us on Facebook—fb/MissouriCityTX, follow us on Twitter, Instagram, Snapchat—@MissouriCityTX and Nextdoor, 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).