This sewage outfall discharges 15-20 million gallons per day of treated sewage up-current of a coral reef in Delray Beach, Florida. (Jim Cagle, Palm Beach County Reef Rescue)
Sewage Outfalls – The greatest volume of waste discharged into the ocean, by far, is sewage. Sewage contains a wide range of pollutants including toxic chemicals, natural and synthetic hormones, pharmaceuticals, pathogens, and organic matter. Nutrients and decaying organic matter can lead to eutrophication and facilitate the formation of harmful algal blooms.
Complied by Marine Photobank.
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