DALLAS STP Wastewater Treatment Plant, Dallas, Wisconsin | Secondary Treatment Facility

DALLAS STP is a municipal wastewater treatment plant located in Dallas, Wisconsin, United States. The facility serves a small population of 342 residents in the Barron County area. As a secondary treatment plant, it provides biological treatment to remove organic matter and suspended solids from wastewater. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater. With a designed capacity of 287.69 megaliters and an annual discharge volume of 113.56 megaliters, the facility has ample capacity for current demand. The plant's discharge is regulated through the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Wisconsin Department of Natural Resources. The treated effluent from DALLAS STP is discharged into a local waterway that ultimately drains into the Mississippi River basin. The plant plays a key role in protecting downstream water quality in the region's lakes and rivers, which support diverse aquatic life and recreational activities.

The plant discharges into a tributary of the Red Cedar River, which flows into the Chippewa River and then the Mississippi River. This watershed supports diverse aquatic species and is an important migratory corridor for birds. The secondary treatment process reduces organic pollutants and suspended solids, helping to maintain water quality in downstream lakes and rivers used for recreation and fishing.