SALEM WWTP - Salem, Indiana Wastewater Treatment Plant

SALEM WWTP is a municipal wastewater treatment facility located in Salem, Indiana, serving a population of about 6,172. The plant is situated in Washington County and operates under the regulatory framework of the U.S. Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all discharges. As a small to medium-sized agglomeration, the plant is expected to meet secondary treatment standards as defined by the EPA, ensuring removal of organic matter and suspended solids. Facilities of this scale in Indiana typically employ conventional activated sludge or lagoon systems. The plant's design and operation are subject to state-level oversight by the Indiana Department of Environmental Management (IDEM), which issues permits and monitors compliance. It likely drains into a tributary of the Ohio River basin. The treated effluent from SALEM WWTP ultimately contributes to the Ohio River watershed, which flows into the Mississippi River and then to the Gulf of Mexico. The plant plays a role in protecting local water quality and downstream ecosystems, including aquatic habitats in the Ohio River and its tributaries. Proper treatment helps reduce nutrient loading and pollutant impacts on these waters.

SALEM WWTP discharges into local streams that are part of the Ohio River basin, which drains into the Mississippi River and eventually the Gulf of Mexico. The receiving waters support diverse aquatic life and are used for recreation and drinking water downstream. The plant's treatment helps mitigate nutrient and pathogen pollution, protecting the ecological health of these waterways.