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What is a backflow preventer and why am I required to have one on my sprinkler system?

April 26, 2017backflow Preventer sprinkler system

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What is a backflow preventer and why am I required to have one on my sprinkler system?

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A. Backflow preventers are safety devices that prevent water that has exited your house through your sprinkler system, from re-entering the house and possibly contaminating your drinking water with fertilizers or pesticides. They are required by law and regional building codes.