You are here:  Main / Customer Services / Public Communications Division / Honolulu News Releases 2003 / Equipment Malfunction Causes Discharge Of Undisinfected Treated Wastewater Into Lake Wilson

 

FOR IMMEDIATE RELEASE
June 18, 2003

 

 

EQUIPMENT MALFUNCTION CAUSES DISCHARGE OF UNDISINFECTED TREATED WASTERWATER INTO LAKE WILSON

          An electrical switchgear malfunctioned during a routine equipment test at the Wahiawa Wastewater Treatment Plant this morning (Wednesday, June 18), resulting in a discharge into Lake Wilson of about 19,800 gallons of effluent that had undergone tertiary treatment, but not the final ultraviolet (UV) disinfection.  (Tertiary treatment is a high level of wastewater treatment.)

           The incident occurred at 9:27 a.m. and was brought under control in 12 minutes.  Plant personnel were able to manually operate electrical breakers and restore power, but not before fully treated effluent discharged without going through the final step of ultraviolet disinfection.

           The switchgear is tested monthly and has not had a history of problems.  Electricians and electrical technicians are now investigating the situation.

           Warning signs have been posted in affected areas of Lake Wilson and the State Department of Health has been notified. 

-30-

 

 

           

 

 

Wednesday, June 18, 2003

© Copyright 2002-2006 City and County of Honolulu, Hawaii
Privacy Statement | Technical Support | Customer Service | Policy | Accessibility | Diversity Statement