A malfunctioning pump at the E.L. Smith Water Treatment Plant prompted EPCOR to issue a ban on non-essential water use on Monday afternoon. The plant provides water for the city of Edmonton and several surrounding communities. The Rossdale Water Treatment Plant which is Edmonton's second water treatment plant remains operational but EPCOR said it cannot adequately supply the entire service area with normal water consumption and have asked everyone to eliminate non-essential water use. The malfunctioning pump has affected the quantity of water so customers may also experience low water pressure but there is no impact to the quality of the drinking water.