The City of Ralston has posted notices that the water tower is undergoing a cleaning tomorrow (Thursday, Sept. 17) and they are issuing a water consumption warning. Due to the possibility that the water quality may be impacted and could contain high manganese and iron levels and because the pressure may vary throughout the community, they are advising resident to NOT drink the water or use it for the cleaning of dishes, brushing of teeth or washing of food through at least Monday, Sept. 21.