UNITY STP - Town of Unity, Wisconsin Wastewater Treatment Plant

UNITY STP is a municipal wastewater treatment plant located in the Town of Unity, Clark County, Wisconsin, United States. The facility serves a population of approximately 699 residents and operates as a secondary treatment plant, which is the standard level required under the U.S. Clean Water Act for most municipal facilities. The plant has a designed capacity of 336.90 million gallons per year and currently discharges 147.63 million gallons annually. As a secondary treatment facility, it uses biological processes to remove organic matter and suspended solids, meeting the effluent limitations set by the National Pollutant Discharge Elimination System (NPDES) permit program. The plant is operated by the local municipality and is subject to state and federal regulations. The treated effluent from UNITY STP is discharged into a local waterway that ultimately drains into the Mississippi River Basin. The plant plays a key role in protecting the water quality of the surrounding watershed, which supports diverse aquatic life and is part of the larger Upper Mississippi River system. Proper treatment helps prevent nutrient pollution and maintains the ecological health of downstream water bodies.

UNITY STP discharges into a local stream that flows into the Black River, a tributary of the Mississippi River. The Mississippi River Basin is a major ecological corridor supporting diverse fish, bird, and plant species. The plant's secondary treatment helps reduce organic pollutants and nutrients, protecting downstream water quality in the Upper Mississippi River system.