San Antonio Water System is changing water disinfectant methods for the Lake Dunlap area.

Effective Monday, SAWS will begin the free chlorine disinfection process that was previously serviced by BexarMet Water Systems.

SAWS expects the method to be used through February 2014.

SAWS is urging hospitals and dialysis centers to test the water to determine if different treatment measures are needed during this time. People or businesses that keep live fish may also need to conduct tests.

Questions about the disinfection methods should be addressed at 704-SAWS (7297).