The City of Windsor in Ontario, Canada, owns and operates two wastewater treatment plants. Little River Pollution Control Plant has capacity to treat 16 million gallons per day (MGD), while the Lou Romano Water Reclamation Plant has capacity for 60 MGD. Since the latter part of the 20th century, the city has made major strides in improving water quality by reducing the sewage discharge into the international waters of the Detroit River. Most recently, the upgrade and expansion of the Lou Romano Water Reclamation Plant, including the increased capacity to treat combined storm and sanitary flows and new secondary biological aeration filtration, marked a major step forward toward the improvement of water quality in the Great Lakes.

Until the early 1990s, the Little River Pollution Control Plant was using a mannich wet polymer solution for their centrifuge and chemical feed polymer preparation. Concerns around the potentially carcinogenic elements of the mannich solution and the characteristic fishy‐smelling foul odor prompted the City of Windsor to consider other polymer blending options. Different systems were run on a trial including the Polyblend® DP (Dry Polymer) demonstration unit. The odor problem was gone within a week and because it outperformed other competitive systems, Polyblend® DP was selected for installation.