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Water Quality Report

The health and safety of our customers and employees is a top priority of the Mt. Zion Water Supply Corporation Board.








Recent News (July 19, 2022): NTMWD Issues Update To Reduce Water Use

The North Texas Municipal Water District (NTMWD) continues to ask customers to reduce their outdoor water use.  Maintenance continues at the Wylie Treatment Complex. Additional information is available by clicking here.


Due to the call for "social distancing" at this time, we are limiting our face-to-face contact with our customers. Our personnel are still working in the office and are available to answer any questions or concerns you may have. If you need assistance please give our office a call at 972-722-3203.

Mt Zion Water Supply Corporation serves the North Central Texas area in the northern portion of Rockwall County. The Corporation's Board of Directors is dedicated to providing reliable service and the highest quality water to its customers.



Water Conservation Tips:

1. Repair leaking faucets, pipes, toilets, etc.

2. Install water saving devices in faucets, toilets and appliances.

3. Wash only full loads of laundry.

4. Run dishwasher only when full.

5. Water the lawn and garden as little as possible.

6. Follow water restrictions carefully.

7. Do not water between the hours of 10 am and 5 pm.