cross-connection, backflow prevention, tester, backflow prevention assembly test report, certified test Cross-Connection Control and Backflow Prevention

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cross-connection, backflow prevention, tester, backflow prevention assembly test report, certified test building-development code-enforcement, community-development building-development capital-improvements, community-development, zoning-land-use environment-resilience environmental-protection all-residents, business-owners, contractors-developers apply-for, request-service, search-for Learn about the potential danger of cross connections with our water supply, as well as backflow prevention training and testing. The Miami-Dade Water and Sewer Department's (WASD) Cross-Connection Control and Backflow Prevention Program was established in order to implement the rules of the <a href="https://www.flrules.org/gateway/ChapterHome.asp?Chapter=62-550">Florida Administrative Code</a> to help protect the public water supply and support the continued delivery of high-quality drinking water to customers throughout Miami-Dade County. A cross-connection is a connection between the drinking water system and a source that could affect water quality under certain conditions. When a cross-connection exists, changes in water pressure can create the potential for backflow, which is the reversal of water flow from its intended direction. To help prevent this, some properties are required to install backflow prevention assemblies. This page provides information about cross-connections, backflow prevention requirements, and available program resources. noFee

Custom What is a cross connection? A cross-connection is any actual or potential connection between a drinking water system and a source that is not intended for drinking water use. Common examples include: <ul> <li>Irrigation systems</li> <li>Garden hoses</li> <li>Fire sprinkler systems</li> <li>Boilers and mechanical equipment</li> <li>Commercial or industrial water systems</li> </ul> When a cross-connection cannot be eliminated, a backflow prevention assembly may be required to help protect the drinking water supply.

Custom Understanding Backflow Prevention Backflow is the unintended reversal of water flow through a plumbing system. Under certain conditions, changes in water pressure can cause water from a private plumbing system, irrigation system, or other connected source to flow back toward the public water system. To help reduce the potential for non-potable water or other substances to enter the public water system, backflow prevention assemblies may be required where cross-connections cannot be eliminated. These mechanical devices are designed to allow water to flow in one direction while helping prevent reverse flow. Requirements for backflow prevention assemblies vary based on a property's water use, plumbing configuration, and potential cross-connection hazards. Examples of properties that may require a backflow prevention assembly include: <ul> <li>Properties with irrigation systems</li> <li>Fire protection systems</li> <li>Medical facilities</li> <li>Commercial and industrial properties</li> <li>Certain multi-family developments</li> </ul> Certain backflow prevention assemblies are required to be tested upon installation and annually by a <a href="/resources/water/documents/instructions/certified-backflow-prevention-assembly-testers.pdf" target="_blank" rel="noopener">Certified Backflow Prevention Assembly Tester</a>.

Custom Backflow prevention assembly A backflow prevention assembly or backflow preventer is a mechanical valve arrangement designed to prevent the "backflow" or reversal of flow of water, once it has passed through the valve. There are different types of backflow preventers for different uses and different degrees of hazard. Because the backflow preventer is a mechanical device with springs, moving parts and rubber seating surfaces, which wear over time, it must be tested upon installation and every year to ensure that the assembly is working properly. Miami-Dade County Code requires backflow prevention assemblies to be installed on certain services depending on the degree of hazard, the type of service (i.e. fire suppression system, irrigation system, domestic water system) and the use of the facility. For a list of backflow preventers approved to be used in WASD facilities refer to: <ul> <li><a href="http://www.usclist.com/" target="_blank" rel="noopener">The University of Southern California Foundation (USC) Foundation Approved Backflow Prevention Assemblies</a></li> </ul> The different types of backflow prevention assemblies are the Reduced Pressure Principle Assembly (RPPA), the Double Check Valve Assembly (DCVA), the Double Check Detector Assembly (DCDA) and the Pressure Vacuum Breaker (PVB). The RPPA is typically installed at the domestic water service connection, the DCVA/DCDA are typically installed at the water service connection that supplies fire suppression systems and the PVB is typically installed at the water service connection that supplies lawn irrigation systems. Specifications for backflow prevention assemblies RPPA <ul> <li><a href="https://www.miamidade.gov/resources/water/documents/Donation/part-4/PDF/WS_4.18_1.pdf" target="_blank" rel="noopener">Reduced Pressure Zone Backflow Preventer for Water Service 3/4" thru 2"</a></li> <li><a href="https://www.miamidade.gov/resources/water/documents/Donation/part-4/PDF/WS_4.18_2.pdf" target="_blank" rel="noopener">Reduced Pressure Zone Backflow Preventer for Water Service 4" thru 8"</a></li> <li><a href="https://www.miamidade.gov/resources/water/documents/donation/part-4/PDF/WS_%204.18_3.pdf" target="_blank" rel="noopener">Reduced Pressure Zone Backflow Preventer for Water Service - Notes</a></li> </ul> DCDA/DCVA <ul> <li><a href="https://www.miamidade.gov/resources/water/documents/Donation/part-4/PDF/WS_4_20_1.pdf" target="_blank" rel="noopener">Typical Fire and Fire & Domestic Water Service Connections</a></li> <li><a href="https://www.miamidade.gov/resources/water/documents/Donation/part-4/PDF/WS_4_20_2.pdf" target="_blank" rel="noopener">Double Detector Check Valve Assembly for Fire Line Service</a></li> <li><a href="https://www.miamidade.gov/resources/water/documents/Donation/part-4/PDF/WS_4_20_3.pdf" target="_blank" rel="noopener">Double Detector Check Valve Assembly for Fire Line Service - Notes</a></li> <li><a href="https://www.miamidade.gov/resources/water/documents/Donation/part-4/PDF/WS_4_20_4.pdf" target="_blank" rel="noopener">Double Detector Check Valve in Parallel</a></li> </ul> PVB <ul> <li><a href="https://www.miamidade.gov/resources/water/documents/Donation/part-4/PDF/WS_4.19_1.pdf" target="_blank" rel="noopener">Pressure Vacuum Breaker, Irrigation System Only</a></li> <li><a href="https://www.miamidade.gov/resources/water/documents/Donation/part-4/PDF/WS_4.19_2.pdf" target="_blank" rel="noopener">Pressure Vacuum Breaker, Irrigation System - Notes</a></li> </ul>

Custom Become a certified backflow prevention tester A certified tester must complete a 40-hour training course in backflow prevention assembly testing and pass a proficiency test. A licensed plumber or contractor may install a backflow prevention assembly. To join the Water and Sewer Department’s list of companies with certified testers: <ul> <li>Completed <a href="/resources/water/documents/instructions/certified-backflow-tester-information.pdf" target="_blank" rel="noopener">Certified Tester Information form</a></li> <li>Copies of your: <ul> <li>Business/contract license, if applicable</li> <li>Certificate of liability insurance</li> <li>Backflow prevention assembly test kit(s) calibration certificate</li> <li>Backflow prevention assembly tester certificate(s)</li> <li>Contractor license of the backflow prevention assembly testers, of applicable</li> </ul> </li> </ul> However, there is a permit fee associated with having a Backflow Prevention Assembly installed. The fees are determined by the Building Department of the city in which you are having the assembly installed. <ul> <li><a href="https://treeo.ufl.edu/backflow/" target="_blank" rel="noopener">Backflow prevention training offered by the University of Florida</a></li> </ul> Certified testers are not endorsed by the Water and Sewer Department. In addition, many plumbing, fire sprinkler, lawn irrigation and backflow preventer testing companies are listed in local telephone directories. Companies (not the Water and Sewer Department or Miami-Dade County) determine the cost to have backflow prevention assemblies tested and installed. A licensed plumber or contractor may install a backflow prevention assembly.

Custom Backflow prevention assembly test reports Test reports can be <a href="https://miamidade.tokaytest.com/" target="_blank" rel="noopener">submitted online</a> with information provided by the Water and Sewer Department. Every tester has a unique user name and password – both of which are not case sensitive. <ul> <li><a href="https://www.miamidade.gov/resources/water/documents/guidelines/tester-instructions.pdf" target="_blank" rel="noopener">Instructions on submitting test reports online</a></li> </ul> As an alternative to the online version, download the <a href="/resources/water/documents/forms/backflow-prevention-assembly-test.pdf" target="_blank" rel="noopener">Backflow Assembly Test Report</a>.

Custom Backflow prevention assembly theft prevention If you have an assembly at your home or business, follow these guidelines to prevent theft: <ul> <li>Build a barrier wall up to six inches above the highest point of the body of the assembly, so that the stems of the shutoff valves are visible from outside the wall structure</li> <li>Create a recessed covered space which is part of the building envelope</li> <li>Purchase a manufactured cover for small diameter assemblies up to two inches</li> </ul> If your assembly has been tampered with or stolen, or if you see any suspicious activity in your area, call the police immediately.

online-serviceCertified Tester/resources/water/documents/instructions/certified-backflow-prevention-assembly-testers.pdf true online-serviceSubmit backflow prevention assembly test reportshttps://miamidade.tokaytest.com/ true online-serviceWater & Sewer Development Services/global/water/development/home.page true Cross-Connection Control Unit 305-547-3046 Call Before You Dig Call 811 or 800-432-4770 or visit https://www.sunshine811.com [email protected] [email protected] MIAMI-DADE WATER & SEWER DEPARTMENT CROSS-CONNECTION CONTROL UNIT

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