Municipal Services

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


The property owner is responsible from the house or building to the Municipality’s main sewer line. The property owner should notify the Waterworks Superintendent to confirm that the sewer main is operational, however the property owner is responsible for retaining a plumber or contractor to determine the extent of the problem.

If you require a connection, please fill out the Service Request Form or contact:

Guy Laurin

Waterworks Superintendent

Keep the System Functioning Properly; What not Flush or Pour Down the Drain

  • Hygiene Products
  • Wipes of any kind (bathroom, baby and cleaning wipes) even those that say flushable can cause problems)
  • Tampons and sanitary supplies
  • Condoms
  • Cotton Swabs
  • Dental Floss
  • Hair
  • Facial Tissue
  • Paper Towels
  • Fat, Oil & Grease
  • Meats and Bacon Drippings
  • Lards, shortening, cooking oil, butter, and margarine
  • Food scraps and baking goods
  • Sauces, salad dressings, and gravy
  • Dairy products (milk and cream)
  • Soups
  • Sandwich Spreads