Doors Open Ontario

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.

Ayr Wastewater Treatment Plant Doors Open Waterloo Region

Ayr Wastewater Treatment Plant

Sinks, toilets, bathtubs … find out where the water goes. Tour one of Waterloo Region’s wastewater facilities that separates, aerates, clarifies, filters and disinfects more than 180 million litres daily. Take the rare opportunity to see behind the scenes of this very essential service. Access by guided tour only, every 30 minutes. Closed-toe shoes required to tour this facility.

Tell us your story about this site

  • Guided tours available
  • Parking

Contact info

1292 Nith Road
Ayr, Ontario


Year built: built 1978, 2002, 2006

Dates/hours open

Saturday September 21, 2019
Saturday: 10 a.m. to 5 p.m.

Ayr Wastewater Treatment Plant 1292 Nith Road