Backflow by back-siphonage
This happens when the pressure drops in the public water supply, causing water to be sucked backwards from private property into the public supply. Examples of when this may occur include:
- During a water main or plumbing break.
- During a water mains shutdown.
- When large volumes of water are drawn for fire protection.
Backflow by decreases in pressure
This happens when water pressure from a private property exceeds the pressure of the public water supply, causing water to be pushed into the public supply. Examples of when this may occur include:
- A pump system that is pumping at a greater pressure than the public water supply.
- A tank being installed at a higher level than the public water supply.
What is the risk?
Backflow can be a major threat to the health of our communities, due to the nature of chemicals and other potential contaminants being used in our homes and businesses.
We all have a part to play in keeping our drinking water safe.
CDC Backflow Prevention Programme
Council has developed a Backflow Prevention Programme and is opting to manage the risk of
backflow by requiring backflow prevention devices be installed at the point of supply.
Council will work together with the public to locate potential areas of risk in the
water networks and remedy the issue by installing backflow prevention devices to lessen the risk.
