Recommended practice for backflow prevention and crossconnection control, awwa manual m14. Crossconnection control policy for single or dual family residential customers technical reference item number. The manual is intended to serve as an informative and useful introductory reference. In addition, particular reference is made to the differential pressure gauge since it has been found suitable for all backflow prevention assembly. Backflow prevention helps to ensure that dangerous contaminants, such as microorganisms, bacteria, noxious chemicals, heavy metals, gases and other potentially threatening pollutantssubstances do not enter the communitys potable water system. See all formats and editions hide other formats and editions.
Abc backflow prevention assembly testers association of boards. Manufacturers installation instructions shall be strictly adhered to. Please read the introduction section to understand how to access the many layers of information contained in the backflow reference manual. Backflow prevention reference manual from iapmo 201602. Application for approval of backflow prevention devices pdf report on test and maintenance of backflow prevention device pdf questions or comments.
The installation and maintenance of any ames backflow prevention assembly should be performed by a qualified licensed technician. This manual is intended for use by all professionals charged with protecting the public water supply with proper backflow prevention. The customer is liable for any health hazard due to backflow from uncontrolled crossconnections on hisher premises. Deviations from the standards presented in this manual due to design constraint or physical. Your instructor will conduct the handson portion of the course in the test lab. The backflow protection in reference to containment shall be a properly installed.
Backflow prevention manual about this course this backflow prevention course is intended to prepare you to testrepair the various backflow prevention devices that are used to protect the public water supply. This manual will be used as an instructional aid for the classroom portion of the course. The requirements outlined in this manual apply to the protection of the public water. Plumbing codes mandate that potable water supplies be protected against backflow at all crossconnections. Idem and dnr have partnered together to create the indiana waterways website to facilitate access to related information in one central place. With the changeover to lead free in the united states effective january 4, 2014, lead free backflow prevention devices are required in many applications andor settings. Saws crossconnection control and backflow prevention program the goals of saws crossconnection control backflow prevention program are to safeguard public drinking water and protect the health of our customers by maintaining a high level of backflow prevention and crossconnection control. Pws 12 approved backflow prevention devices fact sheet application for approval of backflow prevention devices pdf, 11kb. All local plumbing laws and regulations must be adhered to. Watermains specifications for cross connections and.
Assemblies exclusively used for nonpotable industrial or manufacturing processes are exempt. Backflow prevention manual this manual shall supersede all previous versions effective february 14, 2007. Manual of crossconnection control, foundation for crossconnection control and. This manual is intended to be used in conjunction with the hrwc design specification and the hrwc supplementary standard specification. Drinking water program backflow prevention program 5605 n 63rd street boulder, co 80301 telephone.
We handle backflow and crossconnection services for many of vancouvers most successful companies and property owners including restaurants, construction companies, property. During a fire alarm inspection, some of the things we will do are. Enclosed is the revised list of approved backflow prevention assemblies and a list of backflow equipment representatives. In collaboration with the united association of journeymen and apprentices of the. Backflow prevention reference manual hardcoverspiral 2011. The manual, produced in collaboration with the united association of journeymen and apprentices of the pipefitting industry, is updated to the latest editions of plumbing, mechanical, and fire protection codes and standards. Backflow prevention products guide watts water technologies. The system should be flushed before the backflow valve is installed. Cross connection and backflow prevention winter 2004, vol.
With information on the history of backflow prevention as well as chapters written from the regulatory perspective, backflow prevention reference manual is an important resource for system designers, urban planners, and utility companiesprofessionals on both sides of. Epa crossconnection control manual chapter four methods and devices for the prevention of backflow and backsiphonage. New york state department of health crossconnection control. Lead free transition with the changeover to lead free in the united states that became effective january 4, 2014, lead free backflow prevention devices are required in certain applications andor settings. Failure, refusal or inability on the part of the customer to comply shall constitute grounds for refusing or discontinuing water. Backflow prevention services backflow and cross connection. With information on the history of backflow prevention as well as chapters written from the regulatory perspective, backflow prevention reference manual is an important resource for system designers, urban planners, and utility companiesprofessionals on both sides of the water meter. The bavco reference manual is a 600 page collection of spec sheets, breakdowns and repair information of 22 different manufacturers and hundreds of different models of backflow prevention assemblies. Authorized by the backflow administrator on a case by case basis.
Febco backflow prevention assemblies can be serviced with commonly available tools and are designed for ease of mainte nance. This ordinance shall be codified in the gwinnett county code as chapter 114, article ii, division 3, to be entitled cross connection control and backflow prevention, consisting of. Additionally, backflow prevention helps to ensure that an. The third edition of the backflow prevention reference manual continues to build on the important collaboration between the united association of journeymen. Sample exam questions and recommended references for. Backflow prevention devices help protect the public safety by preventing. This handbook is compiled in 9 sections and 3 appendices as a reference document and training manual.
Manual of crossconnection control, 9th edition, foundation for. Unlike the older accepted, nontestable, hardware for preventing backflow such as swing check valves, dual check valves and atmospheric vacuum breakers which still have their applications, the pr and dctype backflow prevention assemblies are testable to assure they are in proper working order. A best practices guide introduction purpose this guide discusses the importance of controlling crossconnections and preventing backflow occurrences from unprotected crossconnections in the water system. General and detailed information is presented in order to provide. Environmental protection agency, water supply division, washington d.
Gwinnett county crossconnection control and backflow prevention ordinance. Backflow reference manual 3rd edition the third edition of the backflow prevention reference manual continues to build on the important collaboration between the united association of journeymen and apprentices of the plumbing and pipe fitting industry and international association of plumbing and mechanical officials backflow prevention institute. The agencies have also created the waterways inquiry request form to help landowners determine which application and waterways permit is required for a potential project. Reference the following references are adopted and made a part of the crossconnection control and backflow prevention program. Reference the standard above ground backflow assembly figures for further information. This is a yearly inspection required by the washington state department of health and roosevelt water association, inc. Methods and devicesair gap 2 for the prevention of backflow. The unique, 300page backflow prevention reference manual contains illustrations in realworld field settings and can be used by regulatory agencies as a guide to determine what type of valve can be used in a particular case. Such a program would connections have been documented. The standards and specifications in this manual will be enforced in a consistent manner throughout the districts boundaries. Backflow prevention has critical implications in potable water supply systems. Drinking water program 303 47400 backflow prevention program 303 47401 fax.
This 4th edition provides greater insight to the roles of the plumbing, fire protection, irrigation and other related industries. Backflow reference manual 3rd edition iapmo membershipstore. Backflow preventer cross reference guide watts water. The safe drinking water act, signed by president ford on december 16, 1974, created. Springloaded swing check for reliability and minimum head loss 250psi 17. However, the barometric loop is not effective against backpressure. Backflow prevention reference manual 9781938936890. Department of environmental protection dep as general reference guidance of standard specifications and procedures for prevention of water contamination and made available as a courtesy to the public. Cross connection control and backflow prevention program. Backflow prevention products watts water technologies. This full color, illustrated reference manual is designed to teach every aspect of backflow prevention and crossconnection control, from identifying and testing the wide variety of backflow prevention assemblies to proper selection and installation of both testable assemblies and nontestable backflow prevention devices.
If the system is not flushed until after the backflow valve is installed, remove both. A backflow prevention assembly is a mechanical valve arrangement used to protect the public potable water supply by preventing the reversal of water flow that may contain contaminants or pollutants due to a crossconnection. The course consists of a combined total of 24 hours of training in the classroom and the handson test lab. The term backflow means an unwanted flow of treated or nonpotable water substance from any domestic, industrial or institutional piping system into the pure, potable water distribution system. Additionally, backflow prevention reference manual can be used by regulatory agencies as a guide to determine what type of valve can be used in a particular case. Backflow preventers the risks to drinking water quality from backflow contamination incidents pose a constant threatwhether theyre nuisance, nonhealth hazards, or serious public health events. Control manual 1972 edition or latest revision epa 9 rg 195 2012. This list is provided merely as a service to help administration authorities recognize current certification. Download program manual crossconnection control and backflow prevention program adobe pdf. Control manual united states environmental protection agency office of water. Bavco is the largest parts distributor of original factory repair parts for backflow prevention assemblies. Backflow prevention reference manual 3rd edition is a full color, illustrated reference manual designed to teach every aspect of backflow prevention and crossconnection control, from identifying and testing the wide variety of backflow prevention assemblies to proper selection and installation of both testable assemblies and nontestable backflow prevention devices.
The ohio department of commerce, industrial compliance, backflow section. Backflow prevention services for backflow testing and installation services in vancouver and throughout the gvrd nobody has you covered like mainland plumbing. The customer is responsible for the cost of procurement, installation, testing, repair, and maintenance of required backflow preventers. This manual is intended for use by all professionals charged with protecting the public water supply with proper backflow prevention and crossconnection control programs. Subdivisions e, g, and h of section 2004 are amended, and subdivision i is repealed, to reference technical standards for backflow prevention designs, revise testing requirements for backflow prevention devices, match requirements for water hammer arresters and suction tanks. Cross connection control basic and renewal courses. The purpose of the act is to protect public health by regulating all public drinking water supplies in the united states. The manual contains sections relating to installation, testing, crossconnection control, repair, and inspections, and can also be used as a textbook for these areas. Target audience this guide is intended for owners and operators of all public water systems serving fewer than. Crossconnection control program leadfree requirements o the reduction of lead in drinking water act requires that backflow prevention assemblies used for potable purposes be leadfree.
Installation, operation, iomabpa maintenance and parts. One extremely important text is the manual of cross connection control, tenth edition by the university of southern california, 2009, available from the university of. A backflow preventer is a means or mechanism to prevent backflow. M14 backflow prevention and crossconnection control. The manual is broken into three sections, design, application and installation. This manual provides instruction on how to recognize degrees of hazard or potential risks to potable water systems, and whether the proper backflow prevention. This full color, illustrated reference manual is designed to teach every aspect of backflow prevention and crossconnection control, from identifying and testing the wide variety of backflow prevention assemblies to proper selection and installation of both testable assemblies and nontestable backflow prevention. The watts backflow preventer product line includes a full complement of lead. Backflow prevention is a matter of protecting the quality and safety of our water supply. List of approved backflow prevention assemblies the state of tennessee utilizes the most current usc foundation for cross connection control list of approved assemblies.
The basic means of preventing backflow is an air gap, which either eliminates a crossconnection or provides a barrier to backflow. See the o f f o u r three if the loop is greater than that height, backsiphonage cannot occur through it. This manual describes the water departments policy and the responsibility of each water customer pertaining to cross connection control. Crossconnection control and backflow prevention program. Virginias crossconnections and backflow prevention regulations were. Backflow preventer cross reference guide valve types febco ames watts conbraco hersey wilkins claval flomatic single detector check valve 406, 406d 4 10 dcv 4 10 ss dcv 4 10 ss07f 4 10 na dc 2 3 edc 4 10 edc ii 8 edc iii 4 10 edc iv 3 10 310 na na double check valve assembly. The basic mechanism for preventing backflow is a mechanical backflow preventer, which provides a physical barrier to backflow. This list of references is recommended to help individuals prepare for an abc bpat exam.
Crossconnection and backflow prevention manual wvdhhr. What is backflow prevention and crossconnection control. There are different types of backflow prevention assemblies for. Backflow prevention assembly test the annual test of your backflow device irrigation system on your water system is due. An installation in conflict with the standards presented in this manual shall be subject to inspection failure andor discontinuation of service. The assemblies are designed to be serviced in line, so. This manual is intended to serve as an informative and useful introductory reference for backflow prevention, to be used in conjunction with reference texts for more detail.
The international association of plumbing and mechanical officials has released the third edition of its backflow prevention reference manual. Practices revised to reference the newly adopted backflow ccc regulations of the state uniform construction code section 346 installer, repairer, tester qualifications for backflow prevention devices and methods new section added in order to retain the backflow testing qualification requirements that were previously contained in part xiv. Lead free transition with the changeover to lead free in the united states that became effective january 4, 2014, lead free backflow prevention devices are required in. Backflow prevention and cross connection control manual.
113 486 1439 1015 76 1030 563 205 511 1282 166 1193 283 1231 789 311 174 1554 99 880 449 916 454 379 1343 944 959 726 452 882 616 23 310 815 365 16 56 45 1371 322