The installation of a backflow assembly may alter system operating pressure, flow and/or influence other hydraulic functions. Please note that these forms are periodically updated so, for the most up to date version of the forms, please use the links on this page. A backflow prevention assembly tester that is . Water Protection Specialist 1505 Sundog Ranch Rd (928) 777-1615 Email Backflow Prevention devices help to protect the City water system from pollution and contamination by providing a layer of protection at connection points to private water lines. Efrain Torres, Environmental Investigator IV. Backflow Prevention Cross Connection Control In compliance with Washington State Administrative Code 246-290-490, which regulates the city's Cross Connection Control Program, Bellevue Utilities inspects drinking water systems on properties to protect against contamination. Splices must be made with 3M Scotchlok moisture resistant connectors, part number UR or UY or equivalent. customer whenever a service An approved airgap must be located directly below the relief valve orifice. {R/ONU1#>he I5ce;, There are more than 30,000 backflow prevention assemblies in use in the Tucson Water service area. However, certain pressure variations in the public water supply can cause water to flow in the opposite direction. If for the installation of a main shutoff valve, emergency shutoff valve, or to accommodate drainage for a RPBA relief-valve, the assembly may be placed at an elevation greater than the minimum. between one and 5-feet AFF, the assembly must be installed at water service entrance elevation. Backflow Prevention Information | City of Houston - Houston Public Works Backflow Prevention Information All certified backflow prevention assembly testers play an important role in protecting the City of Houston water customers. A voluntary group that is open to anyone who would like to join, the CCC Subcommittee provides us with expanded knowledge and resources to address cross-connection control and backflow prevention throughout Texas. A premises-isolation reduced pressure type backflow assembly is required to be installed on all water service connections as listed but not limited to: premises having private wells, water features (swimming pools), geothermal heating & cooling systems, hydronic heating systems, cooling towers, that have access to rivers, lakes, ponds and/or other water sources that can be connected to; are equipped with storage tanks, rainwater-harvesting (excluding those that simply capture rainwater in containers of less than 50 gallons and gravity-feed to landscape), storm-water or groundwater recovery and reuse systems and/or that use, or reuse treated wastewater (grey and/or black-water) on site. connected through a backflow-prevention assemblywithout which, the stagnant water, and anything in it, from the sprinkler system could be drawn into the potable-water supply for your home. A RPBA may required to be installed on any water service that is considered potable and provides for the use of water as a medium for purposes other than potable drinking water. is booked, canceled, or Your public water system must require a CSI to be performedunder the following circumstances: Water providers notify their customers that a CSI is required. Sump pump discharge piping must meet vault drainage requirements as stated herein. Depending on how long the backflow event lasts, the contamination could spread to the public drinking water system. 2. Customer water can be exposed to chemicals, microbes and other harmful substances through sinks, irrigation systems, toilets, showers, washing machines, hose bibs, or through commercial fixtures including boilers and cooling towers. We also coordinate meetings of the Cross-Connection Control (CCC) Subcommittee, a group of participants that meet to discuss issues related to cross-connection control and backflow prevention. Backflow Prevention Assembly Types. Vault/enclosure installations must be provided with adequate drainage and drains may not be connected to sewers of any kind, catch basins, below the flood rim of swales or riverbanks. Fortunately, there are two inexpensive ways to solve this problem: As a homeowner, you may install and maintain your own irrigation system, but its still important to have a suitable backflow prevention assembly (BPA) in place and to be sure that it works properly. Water delivery relies on pressure; it always takes the path of least resistance as it travels through the water system from high to low pressure areas. The proper backflow device protects the public water supply from possible contamination. If the Water Bureau determines the backflow potential warrants and the use does not pose a risk to health. All exposed piping inside enclosures must be insulated with commercially manufactured closed-cell pipe insulation or a heat source must be provided. | Texas Homeland Security 12. City of Houston. Maintenance requirements include regular testing based on the type of device being used. Water service must not be activated and is subject to termination without notice until all backflow assembly installation related work has been completed. Back-siphonage backflow caused by a negative pressure (i.e., a vacuum or partial vacuum) in the drinking or public water system. 11. In no circumstance may the lower assembly be less than 12 AFF (measured to the lowest point on the assembly) and the higher assembly may not be installed above 5 AFF (measured to the top of the assembly body) unless an OSHA approved permanently mounted platform is installedthat meets the standards as outlined herein. Certain pressure loss incidents, such as a water main break or fully opened fire hydrant, can force water back into the drinking water system. All rights reserved. At least 6-feet of vertical headroom is required for all vault, chamber, enclosure, and basement installations. Opportunities posted to governmentjobs.com, Legal and installation requirements for backflow protection, City of Portland general information hotline, Backflow prevention and cross-connection control, Oregon Health Authority (OHA) Cross-Connection Control Requirements, Backflow assembly installation requirements, Submitting backflow assembly test reports, Portland Water Bureau manuals and design standards, install a backflow prevention assembly if there's an existing or potential cross-connection on your premises, immediately have your assembly cleaned, repaired or replaced if not working properly. Backflow occurs due to a sudden change in pressure or a break in the water main. %PDF-1.5
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A negative or reduced pressure in the supply piping causes backsiphonage much the same way as drinking through a straw. Vaults and enclosures must not contain loose fill materials or debris of any kind. 8. Permit must be obtained by a master plumber or irrigatorregistered with the City of Houston. some means. If the available area between a building and the property line is adequate (determined by the Bureau), the vault, chamber, or enclosure for the type of backflow assembly required must be installed outside the confines of the building or structure. Where existing fire sprinkler system water piping is significantly remodeled (significance determined by the Bureau) or modified, unapproved assemblies and or devices are to be replaced with those currently approved. For parking lot, driveway, loading dock applications and/or heavy commercial traffic applications, a minimum of EJ USA Inc. #8217, 36 X 36 or #8217-Double 36 X 74 frame and covers or equivalent must be used. The ladder must be mounted vertically in the entryway of the vault or chamber and be securely anchored at top and bottom. Position Overview. A Texas State Board of Plumbing Examiners (TSBPE) licensed Plumbing Inspector. Call 503-615-6733 Email Us Visit or send mail to: 150 East Main Street, Third Floor, Hillsboro, Oregon 97123 Frequently Asked Questions Expand/Contract Questions and Answers Put simply, a backflow preventer ensures water inside fire sprinklers, irrigation systems, and other water-based . Where the touch-pad wire follows the path of other electrical wiring, shielded wire as described above must be used. United States, Backflow Prevention Assembly Tester Information, Backflow Prevention Assembly Tester Registration Instructions, List of Backflow Prevention Assembly Testers, Approved Backflow Prevention Assemblies List. Backflow is the unintended flow of water from any domestic, industrial or institutional piping system into a drinking water supply system. The addition of a PWS logo, with no further alterations, to the TCEQ official forms, TCEQ 20699 and TCEQ 20700, does not require submittal or approval of an alternate form. Mounting hardware must be of a type, whereby removal and reinstallation may be accomplished without damaging the unit. 6. Backflow preventers are mechanical devices that protect against backflow, which is when contaminated water flows back into a drinkable water supply. Platforms must be engineered to comply with all applicable Oregon OSHA requirements and be detailed on all drawings submitted for review and permitting through City of Portland Bureau of Development Services (BDS). 1. 2. Backflow Assembly Testers in our area. Each of these common uses of a garden hose sets up a cross connection: No doubt you can think of other examples. Only approved Double Check Valve and Reduced Pressure type backflow assemblies, may be used for premises-isolation backflow protection. The Portland Water Bureau will determine the degree of risk. A RPBA is required to be installed on all service connections to vending/food cart lots and lots having below grade drain back yard-hydrants. This report is used to document the results of testing a backflow prevention assembly for proper functioning. Austin, 78744-1070 All students registered for this class will receive a copy of the USC 10th Edition. prevent backflow. Note: A Reduced Pressure Detector Assembly (RPDA) is required to be installed where; storage tanks are provided, if the structure is considered a high-rise (requirement stated herein) if supplying marinas, moorages, premises having docks and piers, when rainwater-harvesting, storm-water and/or groundwater recovery and reuse systems are installed and/or that use, or reuse treated wastewater (grey and/or black-water). A RPBA must be installed on domestic water services to premises where shell buildings are constructed or renovated when occupancy is undetermined at the time of construction and/or renovation. This is not a complete list of all certified testers in this state. To remove the pesticide from the water lines of the customer, utility workers flushed those lines. $31.95 for first three; $10.65 each additional. Name of Property: Property Address: City, State, Zip: , . If water service enters a building at an elevation (determined by the depth of city water service at the R.O.W.) This list is provided merely for the convenience of the Premises-Isolation assemblies must not be removed, replaced, or relocated without first contacting the Water Bureau Water Quality Inspection group. Backpressure backflow caused by downstream pressure that exceeds the upstream supply pressure in the drinking or public water systems due to a high pressure source.