(KNZA)--The Kansas Department of Health and Environment has issued a boil water advisory for the City of Winchester public water supply system located in Jefferson County.

The advisory was issued Saturday because  the water system was unable to maintain the minimum required chlorine residual due to equipment failure. Failure to maintain required chlorine residual levels may put the system at risk for bacterial contamination. 

KDHE says customers should boil water for one minute prior to drinking or food preparation or use bottled water.

The advisory will remain in effect until the conditions that placed the system at risk of bacterial contamination are resolved.