New Glarus STP - Advanced Wastewater Treatment in New Glarus, Wisconsin

New Glarus STP is a municipal wastewater treatment facility located at 1295 Elmer Road in New Glarus, Wisconsin. The plant serves a population of approximately 2,174 people, making it a small-scale facility within the state's wastewater infrastructure. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,741.28 thousand gallons per day and an average discharge volume of 950.14 thousand gallons per day, the facility operates well within its capacity. As a US plant, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Wisconsin Department of Natural Resources. The treated effluent from New Glarus STP discharges into local streams that flow into the Sugar River, a tributary of the Pecatonica River, which ultimately drains into the Rock River and then the Mississippi River. The plant plays a key role in protecting water quality in this agriculturally rich region, supporting aquatic habitats and downstream communities.

The plant's discharge enters the Sugar River watershed, which flows through southern Wisconsin and into the Pecatonica River. This river system supports diverse aquatic life, including game fish species, and is an important resource for local agriculture and recreation. The advanced treatment helps reduce nutrient loading, protecting downstream water bodies from eutrophication and maintaining ecological balance.