Freebase(0.00 / 0 votes)Rate this definition: Effluent. Effluent is an outflowing of water or gas from a natural body of water, or from a human-made structure. Effluent, in engineering, is the stream exiting a chemical reactor.
Show map of the US. Point Marion is a borough in Fayette County, Pennsylvania, United States. The population was 1,159 at the 2010 census, down from 1,333 at the 2000 census. It is served by the Albert Gallatin Area School District.
Marion is located at (40.586579, -83.126404). The city is located about 50 miles (80 km) north of Ohio's capital city, Columbus, due north along U.S. Route 23. Marion occupies most of Marion Township, which is located just outside the city limits.