Does any one check the quality of effluent water discharged from sewage treatment plants?
Normally, no one checks the sewage effluent from treatment plants. The port health officer can come onboard at any port, if they have any doubts about the quality of the effluent being discharged and, ask for sample of the effluent from the sewage treatment plant installed onboard for analysis to find any objectionable contents in the effluent. If excess amounts of bacteria or chlorine etc. are found on testing in the laboratory, they may impose penalty on the ship.