The impact of sump pumps on the wastewater treatment plant in Cramahe Township places a considerable stress on the system, Transportation and Environmental Services Manager Phil Kelly told council at a recent meeting.
A single block with 10 sump pumps can generate 600 gallons per minute into the wastewater treatment system, he said. This extra water increases treatment costs and reduces the system’s efficiency, he added.
The township has the power to enter homes to investigate sump pump connections, he explained. However, Kelly also said homeowners need to be educated about stormwater treatment costs. The township can potentially disconnect an unauthorized sump pump connection.
The report to council came in response to a question from resident Jackie Greenen. She asked about the sewage flow and its impact on the wastewater treatment plant.
“Should Council and the planning and building dept halt all building that will be attached to the WCPCÂ until the actual and not estimated numbers can be determined ?” she said in a submitted question.
The wastewater treatment plant operates at 56% of its capacity, with a five-year average daily flow of 986 cubic meters. It has an uncommitted reserve capacity of 212 cubic meters per day, allowing for 211 additional connections. The high per capita flow rate of 670 liters per person indicates significant inflow and infiltration issues. The plant’s dry weather flows are 500 cubic meters daily, posing compliance challenges.
The planning department requires annual capacity reports to ensure adequate allocation for urban development.
Here is the presentation and questions from council at its Feb. 25 regular council meeting, where Kelly delivered his report:
