ST CROIX FALLS STP, Saint Croix Falls

Overview

ST CROIX FALLS STP serves Saint Croix Falls, Wisconsin, treating wastewater for approximately 2,122 residents. The plant discharges into the St. Croix River, a tributary of the Mississippi River.

ST CROIX FALLS STP is a municipal wastewater treatment plant located in Saint Croix Falls, Wisconsin, along the St. Croix River. The plant serves a population of about 2,122 people, typical of a small community in the upper Midwest. Its location near the river places it within the St. Croix River watershed, which is part of the larger Mississippi River basin. As a small facility in the United States, the plant operates under the Clean Water Act, with National Pollutant Discharge Elimination System (NPDES) permits issued by the Wisconsin Department of Natural Resources. For communities of this size, secondary treatment is the standard requirement, ensuring that organic matter and suspended solids are reduced before discharge. Regulatory compliance is expected. The treated effluent is discharged into the St. Croix River, a National Scenic Riverway known for its ecological significance. The river flows south to join the Mississippi River near Prescott, Wisconsin. The St. Croix River supports diverse aquatic life, including fish species such as walleye and smallmouth bass, and is an important recreational resource for the region.

Environmental context

The plant discharges into the St. Croix River, which flows into the Mississippi River, ultimately reaching the Gulf of Mexico. The St. Croix River is a designated National Scenic Riverway, supporting diverse aquatic ecosystems and providing habitat for fish and wildlife. The watershed is predominantly forested and rural, with the river serving as a critical corridor for migratory birds and aquatic species.

Frequently asked questions

ST CROIX FALLS STP is located on South River Street in Saint Croix Falls, Polk County, Wisconsin, United States.

The plant serves approximately 2,122 residents, typical of a small community in Wisconsin.

The plant discharges treated effluent into the St. Croix River, which flows into the Mississippi River and eventually reaches the Gulf of Mexico.

As a US facility, the plant operates under the Clean Water Act and is regulated by an NPDES permit issued by the Wisconsin Department of Natural Resources.

For small communities of this size, secondary treatment is standard under the Clean Water Act, which reduces organic matter and suspended solids to protect water quality.