A backflow preventer protects consuming water via stopping contaminated irrigation water from reversing into the deliver

https://troyuycl072.evergrovio.com/posts/leading-10-sprinkler-fixing-tips-every-homeowner-need-to-know

A backflow preventer protects ingesting water by means of preventing contaminated irrigation water from reversing into the furnish. Annual trying out retains it functioning and compliant with local codes.