Backflow – Plumbing that Keeps Our Drinking Water Safe

Key West and Monroe County municipal codes will require the installation of a backflow prevention device at each cross-connection point found within the plumbing and fire protection systems of apartments, condominiums, food establishments, and most public and commercial places. The type of backflow preventer required will be in line with the degree of hazard present on the premises.

What is Backflow? Backflow is the undesirable reversal flow of water in a pipeline that could draw contaminates and pollution into the drinking water system. When the drinking water system is connected to anything that could cause impurities to enter back into the drinking water, it’s required to be protected by a Backflow Assembly. Our expert team of Backflow Specialists are dedicated and committed to providing a high quality of service at all times. We test, install, and service all makes and models of Backflow Assemblies.

A backflow prevention device most commonly consists of a pair of mechanical check valves that prevent dirty water from flowing back into the clean water supply in the event of an unexpected or drastic change in water pressure. If properly installed and maintained, a Backflow Preventer will keep drinking water safe and free of contaminants.

Backflow devices must be inspected annually to ensure proper operation and to keep your property in compliance with the local code. Your fresh water supply is subject to interruption and your business may be fined if backflow testing isn’t completed in time.

We TEST, REPAIR, and REPLACE plumbing backflow devices and fire protection backflow devices for residential, commercial, and government.

Call or schedule your Backflow Test for your plumbing or fire protection system today and rely on Certified Lower Keys Plumbing Inc. to help keep your property and water safe. You may fax your FKAA inspection form to us (305) 294-2462 or email it to

We use LEAD-FREE parts for Repairs and Replacements!

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