A backflow preventer protects consuming water by way of stopping contaminated irrigation water from reversing into the source

https://www.google.com/maps/d/viewer?mid=1M8XgQptMwGmSyJzAbHSN4Q8NkBrZbCM&ll=39.33110430648027%2C-76.96178889264556&z=8

A backflow preventer protects drinking water by using preventing contaminated irrigation water from reversing into the deliver. Annual trying out continues it functioning and compliant with neighborhood codes.