Healthy water can start with backflow prevention and cross connection

It’s summer, and we’re hosing around filling ponds, pools, hot tubs, watering our lawns, and applying pesticides. What can this mean for healthy water? First let’s look at some of the definitions.

What do “backflow” and “cross connection” mean?

A cross connection is a connection between a potable drinking water pipe and a non-potable source. For example, you’re planning to spray weed killer on your lawn. You hook up your hose to the faucet on your house and to the sprayer containing the weed killer. If the water pressure drops at the same time you turn on the hose, the pressure change may cause the chemical in the sprayer to be sucked back into your home’s plumbing system through the hose. This is called backflow and could contaminate the water in your home system.

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