The Town of Aurora distributes clean, safe drinking water through the local distribution system to individual customers.

York Region supplies treated drinking water to the Town. The drinking water supplied by the Region is a blend of water sourced from Lake Ontario and ground water wells.  

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Under certain rare conditions, water from a private property could flow back into the Town’s drinking water system, creating an unsafe situation.  Here’s how:

  • Backflow happens when the normal flow of water reverses. Backflow may occur if there is a large pressure difference between the drinking water system and the customer's private system. This could happen if there is a break in a watermain, during use of a hydrant, or if pumps on private property increase pressure at the site. 

  • Cross connections is a connection between the drinking water pipes to another water source or to a source of contamination, like process water.

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