Metropolitan Domestic Water Improvement District is dedicated to providing the water needs of our customers through service, reliability, quality, and value. An important part of a water quality program is a backflow prevention program.
Backflow is the unwanted reversal of flow in a water system. The passages through which backflow may occur are called cross-connections. A cross-connection is an actual or potential connection between a potable water supply and any non-potable source or substance. If backflow is not prevented, the potential exists to allow contaminants into the potable water system, risking public health and pollution.
Metro Water District has a backflow prevention control program as required by state code. The backflow prevention control program requires any site in the system with a backflow assembly to be tested at least once a year by a certified backflow tester to certify that the backflow assembly is working properly.