Backflow FAQs Codes and Regulations
Frequently Asked Questions:
What is backflow?
Backflow is the undesirable reversal of flow of non-potable water or other substances into the piping of a public water system or consumer's potable water system. (source: Florida DEP)
What is a Cross-Connection?
A cross-connection is any temporary or permanent connection between a public water system or consumer's potable (i.e., drinking) water system and any source or system containing non-potable water or other substances. (source: Florida DEP)
Examples:
a submerged irrigation system after a heavy rain storm
piping between incoming city water and an industrial mixing container
a garden hose submerged into mud on one end and connected to a tap on the other end.
What is a backflow prevention assembly (BFPA) and why do I have one on my property?
A BFPA, is a type of automatic valve, that allows the water to flow through it only one way. The purpose of the BFPA is to prevent contaminated water or chemicals from flowing back into the public water supply. Most residential properties are equiped with a backflow device when there is a permanent irrigation system on the property that is either connected to the potable drinking lines or to a private well.
Why does my device need to be tested every year?
BFPAs have rubber components, seals, gaskets, springs, and valves that are subject to deterioration over time. One average, 20% of the valves tested yearly fail and need repair. This means that the average valve will fail about once every 5 years. For this reason, the manufacturers of BFPAs, most cities, counties, and states require to test the devices yearly.
Links to codes and ordinances: