Effluent from anaerobic or aerobic treatment systems requires second- ary treatment before it can be released to soil, groundwater or surface water. Secondary treatment incorporates adhesion and additional microbiological breakdown of waste particles and bacteria on filtering media such as gravel, soil or sand.
Save the River! Thousand Islands - Clayton NY on the St. Lawrence River
Save The River! is a non-profit, member-based environmental organization whose mission is to preserve and protect the ecological integrity of the Upper St. Lawrence River through advocacy, education and research.