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Sewage Treatment/Cultural Eutrophication

Sewage Treatment/Cultural Eutrophication. SEPTIC TANKS. Septic tanks are used in areas where there are no combined sewers. Septic tanks (cesspools) must be emptied each year. Old tanks can crack and leak coliform bacteria into surrounding soil, groundwater, and surface waters.

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Regulate detergents - PowerPoint PPT Presentation

Sewage Treatment/Cultural Eutrophication