Holton WWTP - Advanced Wastewater Treatment in Holton, Indiana

Holton WWTP is a municipal wastewater treatment plant located in Holton, Ripley County, Indiana, United States. The facility serves a small population of 492 residents, reflecting its role in a rural community. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 264.98 thousand cubic meters per year and a discharge volume matching that figure, the plant operates at full capacity. As a US facility, it operates under the Clean Water Act, with National Pollutant Discharge Elimination System (NPDES) permits issued by the Indiana Department of Environmental Management. The treated effluent is discharged into local streams that drain into the Ohio River watershed, ultimately reaching the Mississippi River and the Gulf of Mexico. The plant's advanced treatment helps protect downstream water quality in this ecologically significant basin.

The plant's discharge enters small tributaries of the Ohio River, which flows into the Mississippi River and then the Gulf of Mexico. This watershed supports diverse aquatic life and is an important migratory corridor for fish and birds. Advanced treatment reduces nutrient loading, helping to mitigate hypoxia in the Gulf of Mexico.