Doors Open Ontario

Doors Open Ontario had another successful season! Nearly 500,000 people visited sites in communities across the province. Thanks to our sponsors, partners and volunteers for their support, and to all who participated. Stay tuned for information about next season …

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