While this site has participated in Doors Open Ontario in the past, it is not part of the current season’s program. Please check the Home page for this year’s events and participating sites.

Dundas Wastewater Treatment Plantin-person Doors Open Hamilton Region


  • In-person
  • Guided tours available
  • Parking
Dundas Wastewater Treatment Plant

Come and celebrate the 100th anniversary of the Dundas Wastewater Treatment Plant! Learn how wastewater from your home is treated and restored back into the natural environment. Also offered is the Touch-a-Truck event. Get up close and personal with our field equipment and ask our experts questions. At noon, join us for a cake-cutting ceremony. Note: Closed-toe shoes required.

Contact info

135 King Street East
Dundas, Ontario



Year built: 1919

Dates/hours open

May 05, 10:00am - May 05, 04:00pm

Sunday only: 10 a.m. to 4 p.m.; tours every half hour