The Neighborhood Association has organized a group discount on the Backflow Testing. 

Instead of the normal $30-$35/house, it will be $20/house. 
There's a June 1st deadline with the city, so don't procrastinate. 
Call the company directly and let them know you're in Victoria Woods and would like the group discount.
You will get a bill directly from the testing company when they are finished.

Current authorized testing company;

Brad Heath at Heath Backflow
PO Box 1565
Sherwood, OR. 97140
503-625-8553