The City of Hood River says its Wastewater Treatment Plant has discharged effluent that exceeds the plant’s limit for E. coli due to incomplete disinfection.  Sample test results read on Saturday indicated an E. coli exceedance due to what is termed an upset in biological processes.  Water quality monitoring is ongoing, and the ultraviolet disinfection process has been increased to maximum capacity in order to compensate for partially affected biological process upset.  Increased frequency of sampling is taking place at the waste water plant and also at pre-arranged locations downstream in the Columbia River to determine the effect of the discharge on water quality.  Signs indicating “Warning – Contaminated Water – No water contact” will be placed at locations within The Hook Area of public river access on the Oregon shore, west of the waste water plant.  The signs will also have phone numbers to call for information.  Questions can be directed to the Wastewater Treatment Plant at (541) 386-2432 or Public Works Department office at (541) 386-2383.