Decision by City of Sarnia Ontario protects drinking water
a( href=https://www.sarnia.ca/living-here/water-wastewater/backflow-prevention-program/)sarnia.ca/living-here/water-wastewater/backflow-prevention-program/ “ What is a cross connection?
A cross-connection is “any actual or potential connection between a potable water system and any source of pollution or contamination” (CSA, 2011).
That is what this program is targating.. “..plan includes creating a Backflow Prevention Program and passing a Backflow Prevention By-Law to enforce the program”
https://www.youtube.com/watch?v=zztyd2Xb6i8 Sarnia document states. “cross-connection control, “Back Pressure”, “Back Siphonage” or Backflow Prevention, help to ensure our drinking water is protected.”