A new wastewater treatment plant opens in an area where raw sewage used to be dumped directly into a bay. What type of pollution will be reduced the most by the new plant?

Raw sewage contains disease-causing bacteria and other pathogens. Treating the sewage before it enters the bay greatly reduces these organisms, so bacterial pollution is reduced the most. Nutrients may also decrease, but the main concern highlighted by untreated sewage is bacterial contamination.

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