Sewer backflow preventers are an essential part of your home's plumbing. Here's why you need one and how to test if yours is ...

Backflow preventers are essential in many commercial and some residential properties as they keep contaminated water from flowing backward out of your home and into the public drinking water supply.

Sewer backups damage ... fill up with water so the backflow preventer can help with that,” said Allen. Both Kilpatrick and ...