All Group A public water systems must collect samples for coliform bacteria analysis. If distribution system sampling is coliform-positive, you must determine whether E. coli is in the groundwater by sampling all groundwater sources that were in use when you collected the coliform-positive distribution system sample. You must include this sampling in your coliform monitoring plan.
If the federal government shutdown continues, Supplemental Nutrition Assistance Program (SNAP) benefits in Washington will end on Oct. 31, 2025. DSHS has more information about the impacts as well as what clients can do to prepare for the loss of benefits.