To cancel an order you must call 416-231-2100. There is no guarantee that your order can be successfully cancelled.
Study guides purchased online through the OWWCO Bookstore may be eligible for return if the guides are:
- In resalable condition;
- are the current edition;
- were not final sale at time of purchase; and
- are returned within 10 days from shipping date.
To return materials:
Obtain an authorization in advance by calling 416-231-2100. Reference your authorization and return item(s) to:
Ontario Water Wastewater Certification Office
302 The East Mall, Suite 600
Etobicoke, ON M9B 6C7
Items marked as Final Sale cannot be returned, refunded or exchanged.