Onanole Wastewater Lagoon - Secondary Treatment Facility in Harrison Park, Manitoba

Onanole Wastewater Lagoon is a municipal wastewater treatment facility located in the Municipality of Harrison Park, Manitoba, Canada. The plant provides secondary treatment for the local community, supporting public health and environmental protection in the region. As a secondary treatment facility, the plant meets the standard level of treatment required for most Canadian wastewater systems, which typically involves biological processes to reduce organic matter and suspended solids. The plant operates under Manitoba's regulatory framework for wastewater, which aligns with the Canada-wide Strategy for the Management of Municipal Wastewater Effluent. The treated effluent is discharged into the local watershed, which ultimately drains into Lake Manitoba and then into the Nelson River system, reaching Hudson Bay. The plant plays a key role in protecting downstream water quality and aquatic ecosystems in this prairie region.

The plant discharges into the local watershed that drains into Lake Manitoba, a large lake within the Nelson River basin, which eventually flows into Hudson Bay. This region supports diverse aquatic life, including fish species such as walleye and northern pike, and provides important habitat for migratory birds. The secondary treatment helps reduce nutrient loading and protects the ecological health of downstream water bodies.