The annual hydrant flushing for 2025 was completed in May.

Flushing hydrants is an important preventive maintenance activity that verifies proper operation of the City’s fire hydrants and ensures adequate water flow will be available if the need for firefighting arises. Flushing also removes sediment that naturally accumulates in water mains.

During hydrant flushing, Marion residents may temporarily experience reduced water pressure or discolored water. While the water is safe to use and consume, we recommend postponing laundry, as the sediment may cause rust-colored stains. To prevent build-up within your water heater, avoid using hot water until your cold water tap runs clear. 

View the map below to see the progress: