Backflow valves are 85% effective in eliminating sewer backup, according to Galen Heinrichs, stormwater utility manager with the City of Saskatoon. Moreover, in that 15% of instances in which a home ...
Backflow valves are 85 per cent effective in eliminating sewer backup, according to Galen Heinrichs, stormwater utility manager with the City of Saskatoon.Moreover, in that 15 per cent of instances in ...