The Township of Armstrong owns and operates the Waste Water Treatment Plant. The Water Works Superintendent and Public Works Department are responsible for the safe and efficient operation and maintenance of the wastewater collection system.

Wastewater Collection & Treatment               

The collection system is a CLASS II System requiring Operators to be certified in accordance with the system.

The system consists of 7 km’s of collection piping (ranging from 200mm to 950mm) with approximately 340 connections serving a population of 832.

The collected sewage is gravity fed to a chamber at the lift pump station and discharged to three lagoon cells (holding cells) and one aeration cell, equipped with an air diffusion grid system. This is operated as a seasonal discharge system to coincide with higher stream flows to mitigate the impact on the environment.

Allowable discharge periods are April 1 to May 31, and September 15 to November 31 of each year, however, these entire periods are not necessarily required for discharge.  Alum Sulphate is introduced to the raw sewage coming in to the lagoon cells at a rate of .22 L/min, or per 4.5 m³ (approx.).

The Post-Aeration System consists of an earthen cell, with a small blower building pushing air into the effluent as it passes through the cell.

Annual Wastewater Compliance Report