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FOR IMMEDIATE RELEASE
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.
|Wednesday, June 18, 2003|