SHAFER STP - Secondary Wastewater Treatment in Shafer Township, Minnesota

SHAFER STP serves the community of Shafer Township in Chisago County, Minnesota. This publicly operated facility treats wastewater from a small population of 1,185 residents, reflecting the rural character of the area. The plant is situated inland, away from coastal influences, and its operations are part of the regional water management infrastructure. The plant provides secondary treatment, a standard level for municipal wastewater in the United States under the Clean Water Act. Designed to handle a capacity of 590.52 volume units, it currently discharges 397.47 volume units, indicating operational headroom. As a US facility, it operates under an NPDES permit issued by the Minnesota Pollution Control Agency, which sets effluent limits to protect water quality. The treated effluent from SHAFER STP likely discharges into a local watercourse within the St. Croix River basin, which ultimately flows into the Mississippi River. This watershed supports diverse aquatic life and is an important ecological corridor. The plant's performance helps maintain the health of downstream waters, including recreational and habitat areas.

SHAFER STP discharges into a local stream within the St. Croix River watershed, which drains into the Mississippi River. The St. Croix River is a National Scenic Riverway known for its ecological significance, supporting diverse fish populations and migratory birds. The plant's secondary treatment helps reduce nutrient loading and protect downstream water quality in this sensitive freshwater system.