nTio2
Replace power washers by employing the green techology of the self cleaning coating "nano Titanium Dioxide (nTiO2).
It's a better way to keep buildings clean while protecting the environment and it's available here in the lower mainland.
While we don’t have information about this product, an education program that includes the appropriate use of power washers and alternatives to their use is part of the Draft Greenest City Action Plan.