Feel like your hands with Cross-Connection Control are tied

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Cross-Connection Control Program Administration
Basic Workshop

• Division of Water Supply
• August 8, 2008

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Feel like your hands with Cross-Connection
Control are tied?
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Cross-Connection Control Program Guidelines and
Recommendations

• Active and ongoing.
• Backflow Assembly Testing Program
• Approved Cross-Connection Control Plan
• Approved Cross-Connection Control
  Policy/Ordinance
• Distribution System Surveys and Inspections
• Public Education
• Enforcement of Policy/Ordinance

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Cross-Connection Control ProgramActive and
Ongoing

• Program must be active- Continuous detection and
  elimination of cross-connections through
  inspections and surveys.
• As changes occur within the distribution
  system-for example , growth, a plan is developed
  to effectively prevent cross-connections
  pertaining to either nonresidential or
  residential customers.
• Plans and ordinances should be reviewed at least
  every 5 years to ensure accurately represent the
  needs of the system and requirements of the State.

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Cross-Connection Control ProgramBackflow
Assembly Testing

• All backflow preventers required by the water
  system for protection are required to be tested
  every 12 months by a person possessing a valid
  State of Tennessee Certificate of Competency.
• The assembly must be tested using the latest DWS
  approved procedure (DC and RP)
• Water system may add more stringent requirements
• Test kits must be certified annually.
• Testers may be either the water system personnel
  or third party, but never owner.

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Cross-Connection Control ProgramApproved CCC
Plan

• According to DWS regulations, every community
  water system must have an approved plan
• For approval, the plan will meet recommendations
  and requirements as listed in the 2008
  Cross-Connection Control Manual under the Design
  Criteria for Plans
• The plan acts as an agreement between the water
  system and DWS of the activities that the water
  system will perform to prevent and eliminate
  cross-connections.

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Cross-Connection Control ProgramApproved CCC
Policy/Ordinance

• According to DWS regulations every community
  water system will have an approved
  policy/ordinance.
• A policy refers to the document from a utility or
  private water system, an ordinance refers to the
  document from a city or municipality, essentially
  they are the same.
• A Policy/Ordinance is basically the requirements,
  codes, or agreement that the water system demands
  of the customer in regards to cross-connection in
  order to retain water service.

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Cross-Connection Control ProgramDistribution
System Surveys

• The CCC program must have a effective procedure
  for finding cross-connections.
• The distribution system is composed of two
  categories Nonresidential and Residential.
• The method for finding cross-connections will
  different for Residential than it will be for
  Nonresidential.
• Residential establishments, due to the large
  percentage, will surveyed.
• A Survey is composed of listing simple criteria
  that would require a physical inspection if it
  was determined to meet the criteria. If the
  establishment did not meet the criteria, no
  on-site inspection is required.

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Cross-Connection Control ProgramDistribution
System Surveys (cont.)

• Nonresidential sites would include commercial,
  industrial, agriculture, or anything other than
  Residential establishments.
• Nonresidential establishments, will require
  onsite inspections due to the nature of most
  businesses to change owners or type of business.
  A goal should be set to inspect each business
  every 5 years or whenever the business changes
  piping or ownership if no assembly is required.
• The water system may take the option of requiring
  all Nonresidential establishments to install an
  assembly to reduce the time-consuming onsite
  inspections.

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Cross-Connection Control ProgramPublic Education

• Public education regarding cross-connections and
  backflow will help tremendously to provide
  awareness on the Residential side of the
  distribution.
• Providing information to the customers and
  requiring water-use questionnaire at the request
  of water service is highly suggested.
• Some of the items to discuss may include lawn
  irrigation systems, well systems, thermal
  expansion, etc.
• A brochure sent to all customers or a clip in the
  Consumer Confidence Report on cross-connection
  and backflow prevention would satisfy this CCC
  plan requirement.

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Cross-Connection Control ProgramEnforcement of
Policy/Ordinance

• The policy/ordinance is legal agreement or local
  regulations that customers or citizens must
  comply.
• A policy/ordinance restricting cross-connections
  is worthless without enforcement.
• Warning letters, fines, penalties, and even
  discontinuance of water service may be necessary
  to prevent cross-connections and backflow which
  may ultimately lead to sickness or death.

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Cross-Connection Control Present Proposed
Statutes, Regulations

• Statute
• 68-221-711. Prohibited acts.
•  
• The following acts are prohibited
• The installation, allowing the installation, or
  maintenance of any cross connection, auxiliary
  intake, or bypass, unless the source and quality
  of water from the auxiliary supply, the method of
  connection, and the use and operation of such
  cross connection, auxiliary intake, or bypass has
  been approved by the department Acts 1983,
  ch. 324, 12 T.C.A., 68-13-711.

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Definition of Cross-Connection

• TCA 68-221-703. Definitions.
•  
• As used in this part, unless the context
  otherwise requires
• "Cross connection" means any physical arrangement
  whereby a public water supply is connected,
  directly or indirectly, with any other water
  supply system, sewer, drain, conduit, pool,
  storage reservoir, plumbing fixture or other
  device which contains, or may contain,
  contaminated water, sewage or other waste or
  liquid of unknown or unsafe quality which may be
  capable of imparting contamination to the public
  water supply as a result of backflow. Bypass
  arrangements, jumper connections, removable
  sections, swivel or change-over devices through
  which, or because of which, backflow could occur
  are considered to be cross-connections Acts
  1983, ch. 324, 4 1988, ch. 583, 2 T.C.A.
  68-13-703 Acts 1998, ch. 592, 1-3.

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Cross-Connection Control Present Regulations

• 1200-5-1-.17 Operation and Maintenance
  Requirements
•  
• Pursuant to Section 68-221,711(6) the
  installation, allowing the installation, or
  maintenance of any cross-connection, auxiliary
  intake, or bypass is prohibited unless the source
  and quality of water from the auxiliary supply,
  the method of connection, and the use and
  operation of such cross-connection, auxiliary
  intake, or bypass has been approved by the
  Department. The arrangement of sewer, soil, or
  other drain lines or conduits carrying sewage or
  other wastes in such a manner that the sewage or
  waste may find its way into any part of the
  public water system is prohibited.

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Cross-Connection Control Present Regulations
(cont.)

• All community water systems must adopt an
  ordinance or policy prohibiting all of the above
  and submit a copy of the executed ordinance or
  policy to the Department for approval. All
  community water systems shall develop a written
  plan for a cross-connection control program to
  detect and eliminate or protect the system from
  cross-connections. The written plan must be
  approved by the Department.

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Cross-Connection Present Regulations

• After adoption and approval of the
  cross-connection ordinance or policy and plan,
  each community water system must establish an
  ongoing program for the detection and elimination
  of hazards associated with cross-connections.
  Records of the cross-connection control program
  must be maintained by the water supplier and
  shall include such items as date of inspection,
  person contacted, recommendations, follow-up, and
  testing results.

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Proposed Cross-Connection Control Regulations

• Paragraph (6) of Rule 1200-5-1-.17 Operation and
  Maintenance Requirements is amended by adding new
  subparagraphs (a) and (b) to read as
  follows(a)   Public water systems must develop
  and implement an ongoing cross-connection
  program.  Cross-connection plans and policies
  shall present all information in conformance with
  the Design Criteria for Community Public Water
  Systems as published by the Department. 

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Proposed Cross-Connection Control Regulations

• b)  The public water system shall ensure that
  cross-connections between the distribution system
  and a consumers plumbing are surveyed and/or
  inspected and determined not to exist or contain
  significant risk or eliminated or controlled by
  the installation of an approved backflow
  preventer commensurate with the degree of hazard.

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Basic Elements of a Cross-Connection Control Plan

• Introduction
• Authority for Cross-Connection Control
• Program to be Pursued
• Procedures for Inspections
• Premises Requiring RPs and Air Gaps
• Premises Allowing DCs
• Inspection and Testing of Assemblies
• Parallel Units
• Records
• Backflow Contamination Procedures
• Modifications to Plans

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Introduction

• Basically outlines the goal of preventing
  backflow and unprotected cross-connections.
• Introduces a plan of action to be followed in
  order to prevent backflow and contamination.
• Nothing very life altering, but necessary to
  state goals and support of cross-connection
  control.

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Authority for Cross-Connection Control

• In order to follow the plan, a document that acts
  a legal binding contract is needed to encourage
  customers and to keep them on the straight and
  narrow- Ordinance, if the system is municipality.
  Policy if it is utility or private water system.
• Who is responsible for the water in
  distribution-yep, the water system!!!
• Water service is a privilege and service to the
  customers, not a right. Some customers will
  abuse this privilege and their must be some
  consequence for noncompliance with the policy or
  ordinance.

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Program to be Pursued

• Staffing- Determining the Cross-Connection
  Control Manager and the amount of people and time
  dedicated to the cause. It is highly recommended
  that someone in the system have a valid
  Certificate of Competency.
• Inspections and Surveys
• Residential Surveys
• Nonresidential Inspections
• Well User Agreements
• Public Education
• Customer Responsibility
• Enforcement

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Inspections and Surveys-Residential

• Residential Customers will make up the bulk of
  the customers in the water system
• Unless the system is very small, it would be very
  difficult to inspect all customers.
• A survey of the Residential customer- either by
  driving by or written questionnaires is helpful
  to determine problems.
• A goal of 20 of customers should be surveyed.
  However, this negotiable, depending on the
  system.
• A definite written plan of surveying the system
  is needed to be effective.

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Residential Red Flags

• Lawn irrigation systems
• Residential fire protection systems (closed loop
  systems will require a double check valve
  minimum)
• Pools, Saunas, Hot Tubs, Fountains
• Auxiliary Intakes and Supplies-wells, cistern,
  ponds, streams, etc.
• Home water treatment systems
• Hobbies that require extensive amounts of toxic
  chemicals (taxidermy, metal plating, biodiesel,
  ethanol production, etc.)
• Any other situations or conditions listed in the
  manual or conditions deemed a threat by the water
  system.

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NonResidential Customers-Inspections

• Nonresidential customers hold the largest chance
  of contamination if backflow occurs.
• Nonresidential Customers should have an initial
  onsite inspection with a goal of having an
  inspection every 5 years. This negotiable,
  depending on the water system, but a plan must be
  written out.
• For larger systems, it is suggested that
  ordinance or policy require that all new
  nonresidential customers must have an RP or DC
  depending on situation and that existing
  customers not required to have one are inspected
  every 5 years. This will greatly reduce work
  load.

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Well User Agreements

• Any customer with an auxiliary water supply such
  as a well, should never be connected with the
  public water supply.
• The well user should be required to sign an
  agreement not to connect to public water supply
  without a backflow preventer and if they do, the
  possibility of fines, penalties, and
  discontinuance of service may occur if
  uncorrected.
• It is suggested to start inspecting all new wells
  drilled within the system within the last year.
  Then draft a plan of existing wells that do not
  have an agreement.

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Public Education and Awareness

• For Residential Customers, this is one of the
  most effective way to help prevent
  cross-connections.
• At minimum, a brochure or pamphlet to each of
  customers should be sent.
• A clip in the Consumer Confidence Report about
  backflow and cross-connections would also
  suffice.
• It is suggested that information be sent about
  using air gaps and vacuum breakers when filling
  pools and other information about lawn
  irrigation.
• See CD for examples of brochures.

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Enforcement

• The dirty word- How do we make the customers
  comply ?
• The usual answer is through warnings, fines,
  penalties, and ultimately discontinuance of
  service.
• High and Low Hazards should be protected within
  90 days of identification.
• High Risk High Hazards immediate or within 14
  days.
• Some tact may be required, depending on situation
  and if needed waivers or variances can be given
  if there in no chance of contamination.

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Premises Requiring Air Gaps and RPs

• High Risk High Hazards-These are establishments
  that the pose an extreme health hazard or is of
  immediate concern.
• High Risk High Hazards should be protected within
  14 days or immediate correction.
• High Hazards- These are health hazards that do
  not pose an immediate concern.
• High Hazards should be protected within 90 days.

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High Hazards

• Water system must accurately define the
  situations that pose a high hazard.
• It is recommended that the water system use the
  states Cross-Connection Control Manual as a
  basis and add other situation unique to their
  system.
• The list of high hazards or description should be
  in the plan and policy/ordinance.

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Determination of High Risk High Hazards

• Mortuaries, morgues, autopsy facilities
• Hospitals, medical buildings, animal hospitals
  and control centers, doctor and dental offices
• Sewage treatment facilities, water treatment,
  sewage and water treatment pump stations
• Premises with auxiliary water supplies or
  industrial piping systems
• Chemical plants (manufacturing, processing,
  compounding, or treatment)
• Laboratories (industrial, commercial, medical
  research, school)
• Packing and rendering houses
• Manufacturing plants
• Food and beverage processing plants
• Automated car wash facilities
• Extermination companies
• Airports, railroads, bus terminals, piers, boat
  docks
• Bulk distributors and users of pesticides,
  herbicides, liquid fertilizer, etc.
• Metal plating, pickling, and anodizing operations
• Greenhouses and nurseries
• Commercial laundries and dry cleaners
• Film Laboratories

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High Risk High Hazards (cont.)

• Automated car wash facilities
• Extermination companies
• Airports, railroads, bus terminals, piers, boat
  docks
• Bulk distributors and users of pesticides,
  herbicides, liquid fertilizer, etc.
• Metal plating, pickling, and anodizing operations
• Greenhouses and nurseries
• Commercial laundries and dry cleaners
• Film LaboratoriesPetroleum processes and storage
  plants
• Restricted establishments
• Schools and Educational Facilities
• Animal feedlots, chicken houses, and CAFOs
• Taxidermy facilities
• Establishments which handle, process, or have
  extremely toxic or large amounts of toxic
  chemicals or use water of unknown or unsafe
  quality extensively.

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Premises allowing Double Check Valve Assemblies

• In the Tennessee, only low hazards may be
  protected by DCs
• This means only nonchemical fire lines (Classes
  1-3)
• Testing backflow preventers on fire lines is
  explained a little later in presentation.

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Approval of New Installations

• Assembly must be inspected for compliance with
  installation criteria including correct
  orientation.
• The backflow preventer is tested and has a status
  of Passed.
• Backflow preventer is added to master list of
  assemblies and continued to be tested annually

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Routine Inspection and Testing of Assemblies

• Backflow preventers accepted for premise
  isolation are tested at least every 12 months.
• The Tester must have a valid Certificate of
  Competency.
• The tester may be a representative of the water
  system or could be a third party tester.
• Tester must perform the latest procedure from the
  Division of Water Supply with an annually
  certified test kit gauge.

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Third Party Testers

• Must have a valid Certificate of Competency-kept
  on file by water system.
• Must have a certificate showing annual
  certification of test kit-kept on file by water
  system.
• A quality control effort should be made by water
  system to determine if third party testers are
  performing as desired. This should be outlined
  in the plan.

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Additional Items Tester Should Record

• That cross-connections, actual or potential, have
  not been added ahead of the protective
  assemblies,
• The assembly meets all installation criteria
  and
• The assembly has not been bypassed or altered in
  some other way to compromise the backflow
  protection.

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Backflow Preventer Annual Test Report

• The annual testing report for backflow preventer
  is a legal document.
• The document must be completed fully and
  accurately.
• All parts and sections tested on the assembly
  must be recorded on the test report.
• Address of assembly, testers information, and
  assembly info must be listed to accurately
  identify the assembly and tester.
• The status of the assembly must also be recorded
  Passed or Failed.
• Items of notice or concern should be listed in
  the comment section of the report.

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Installation Requirement-General

• All new installations must be on the approved
  list and in the correct orientation.
• Accessible to repair and testing
• No unprotected bypasses in front of the backflow
  preventer-exceptions are lawn irrigation systems
  on residential.
• Conditions are within approval of
  assembly-pressure, temperature, etc.
• RPs can never, ever, never be put in a pit or be
  allowed to submerge. Not even if there is a
  drain! Sorry!

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Records

• How long are Cross-Connection Control Records
  kept?
• -5yrs
• Cross-Connection Control records can make or
  break a program.
• Must be accurate.
• The following are records that should be kept in
  order to show proof of adequate program.

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Records Needed!

• Master List of all Establishments with assemblies
  used for premise isolation, including location,
  assembly used, make, model, size, serial number
  etc.
• Correspondence between water system and its
  customers
• Copy of Approved Plan
• Copy of Approved Policy/ordinance
• Test reports for each assembly
• Copies of Certificates of Competency for each
  tester
• Copies of test kit certifications
• Site Inspection Reports
• Residential written surveys
• Backflow incident reports
• Records on initial surveys, recommendations,
  follow-up, corrective action, routine
  reinspections, etc.
• A file system designed to call to the attention
  of the cross-connection control personnel when
  testing and reinspections of premises are needed.
• Public education pamphlets and information.

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Backflow Contamination Procedures

• Isolate the lines containing any contaminant from
  the distribution system
• Inform customers with contaminated lines not to
  consume or use the water
• Report contamination to the Local Field Office
• Determine and separate the cross-connection
  allowing the backflow and contamination
• Remove contamination from lines
• Test and ensure that lines meet Division of Water
  Supply regulations for safe water
• Return service to customers affected customers
  once water is safe
• Document the details of the incident including
  cause, isolation, and correction, and send report
  to Local Field Office
• Continue to survey and inspect system for similar
  situations that may allow backflow.

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Plan Revisions and Updates

• Plans, Policies, and Ordinances become outdated
  over time and should be updated.
• Plans, policies, and ordinances should reviewed
  every 5 years to ensure that they are in
  agreement with DWS criteria, requirements, and
  recommendations.
• All revisions must be approved by DWS before
  following.

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Sanitary Survey Audit List

• At the end of the presentation is a Sanitary
  Survey Audit List.
• It is designed to inform the water system of the
  plan requirements that were agreed upon by DWS
  and the system.
• It is a quick summary of the items that could be
  inspected during the survey.
• This audit list could be used to find
  deficiencies in the system and could be used
  among water systems as way to check each for
  problems.

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New Installation Inspections

• All new assembly installations are inspected for
  compliance with policy or ordinance.
• Many situations in which a backflow preventer is
  installed may create a cross-connection or cause
  the backflow prevention assembly to fail.
• Remember RPs can never, ever, never, - well I
  think you got it.

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What wrong with these pictures?
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Backflow Prevention Assemblies on Fire Lines

• All assemblies required by the water systems must
  be tested every 12 months by a person possessing
  a valid Certificate of Competency.
• Due to the liability involved with working on
  fire lines, the Division of Fire Prevention has
  passed regulations that only allows persons with
  a fire sprinkler contractor license to test,
  repair, or install on lines used exclusively for
  fire systems.
• The Division of Water Supply does not enforce
  this regulation, however, we do not condone this
  practice by someone not possessing the
  appropriate certifications.

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Backflow Prevention Assemblies on Fire Lines
(cont.)

• Commercial Fire Systems are tested annually by
  licensed professionals, and according to NFPA,
  these professionals are required to offer this
  backflow testing as a part of their contract.
• Fire sprinkler contractors are required to have a
  Certificate of Competency, just as any other
  tester.
• In order to stay in compliance with the Division
  of Water Supply and the Division of Fire
  Prevention, the water system may have to amend
  their plan and policy/ordinance to allow fire
  sprinkler contractors to test.

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RULESOFDEPARTMENT OF COMMERCE AND
INSURANCEDIVISION OF FIRE PREVENTIONCHAPTER
0780-2-7FIRE PROTECTION SPRINKLER
SYSTEMCONTRACTORS 0780-2-7-.01
DEFINITIONS. (g) "Point of Service" means the
point immediately after the tap of the service
main wherewater is used exclusively for fire
protection purposes. (i) "Service" means to
repair, test, or inspect.   0780-2-7-08
INSTALLATION, INSPECTION AND SERVICE. (4)
Inspection and service, where required, shall be
conducted by a registered fire protection
sprinkler system contractor in accordance with
the standards. Written reports of inspections
shall be completed and filed in accordance with
paragraph (3) of this rule.
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Which is Testable Without a Fire Sprinkler
Contractor License?
Fire Line
Domestic
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Residential Fire Protection Systems

• Many new subdivisions and towns across Tennessee
  are requiring new homes to have fire systems to
  help fire departments in rural areas and also at
  the request of insurance companies.
• There are 3 fire system options available to the
  home owner.
• Two of the options allow water to flow through
  the piping not allowing it to become stagnant.
• The closed loop system, similar to the commercial
  type systems, require at least a Double Check
  Valve.

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Residential Flow-Through Fire Protection System
No Backflow Preventer required.
57
Residential Protection System
No Backflow Preventer required.
58
Residential Closed Fire Protection System
Double Check Valve required at minimum.
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• Cross-Connection Control Program Audit Checklist
• For
• Sanitary Surveys
• Backflow Prevention Assemblies Testing
• All existing assemblies and air gaps must be
  tested or inspected within a 12 month period.
• All assemblies must have a status of Passed as
  determined from testing procedure. Air gaps must
  pass inspection.
• Assemblies that have a status of Failed or have
  not been tested within the 12 month period, will
  be given a strict compliance date (90 days
  maximum, 14 days maximum for High Risk High
  Hazard).
• Each tester must have a current and valid
  Certificate of Competency and test kit
  certification. See document entitled State
  Guidance for Certificate of Competency for
  Testing and Evaluating of Backflow Prevention
  Assemblies.
• Copies of Certificate of Competency and test kit
  certifications must be on file for each tester.
• All test reports must be approved and properly
  recorded (all required sections completed).
• Testers must use DWS procedures for testing RP
  and DC. See document entitled State Guidance
  for Backflow Prevention Assembly Performance
  Evaluations.
• Enforcement
• All premises with assemblies not tested or have a
  status of Failed in which the compliance date has
  passed are disconnected from the distribution
  system.
• All premises that have been documented and
  notified that protection is needed and the
  compliance date has passed have been disconnected
  from the distribution system.
• All enforcement issues have been resolved for
  premises that are not in compliance with the
  policy or ordinance (installation requirements,
  repairs, etc).

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• Records
• Master List of all assemblies and air gaps used
  for premises isolation including location,
  assembly used, make, model, size, serial number
  etc.
• Test reports documenting assemblies have been
  tested annually and within the 12 month time
  period.
• Site inspection reports
• Copies of each testers Certificate of Competency
  and test kit certification
• Annual public education documents and pamphlets
• Notifications to customers regarding compliance
• Approved Plan
• Approved Policy/Ordinance
• Residential Written Surveys
• Public Education
•  
• Water System must provide public education about
  cross-connections and backflow prevention at
  least once annually to all customers. This may
  include bill inserts, public service
  announcements, pamphlet distribution, and
  consumer confidence report articles.
• Surveys/Site Inspections
•  
• Distribution system is broken down into two
  categories Residential and Non-Residential
•  

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• Residential Surveys
• A goal of 20 of the residential customers is
  surveyed each year (for larger systems
  Statistical population will be proposed). The
  actual percentage will be agreed upon by the
  Division of Water Supply and Water System. The
  same customer may not be surveyed within a five
  year period. Inspections are performed on all
  establishments that meet criteria. The cycle is
  repeated on the 6th year.
• Residential Surveys/Inspections
• Written surveys are sent to residential
  customers.
• Written surveys are reviewed and sites that meet
  criteria for possible cross-connections are
  inspected.
• Results from all Inspections are recorded on an
  approved field sheet with a determination of the
  need for backflow prevention assembly.
• New residential customers are given
  questionnaires at service request along with
  information about cross-connection and backflow
  prevention. Results of the questionnaires are
  reviewed and sites that meet criteria are
  inspected.
• Secondary meters If secondary meters are
  issued, these are inspected. If this is not done
  presently, start with all new meters, list all
  existing secondary meters, and draft a schedule
  of inspection for existing (approved by DWS).
• Well systems Premises without backflow
  prevention assemblies that also have well systems
  must be inspected for cross-connections and a
  well user agreement signed. If this is not
  performed presently, start with all new wells
  drilled within the distribution area in the last
  year, list all existing well systems within the
  distribution system, and draft schedule for
  inspection (approved by DWS).

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• Non-Residential Surveys/Inspections
• All non-residential establishments are initially
  inspected or required to have an assembly. All
  non-residential establishments not requiring an
  assembly will be inspected at least annually. If
  this is not done presently, start with all new
  non-residential establishments, list all existing
  non-residential establishment, prioritize
  according to hazard, and draft schedule for
  inspection. These establishments are prioritized
  into High Risk Health Hazards, Health Hazards or
  Non-Health Hazard.
• Results from all Inspections are recorded on an
  approved field sheet with a determination of the
  need for backflow prevention assembly.
• Sites Requiring Backflow Preventions Assemblies
  or Air Gaps
• Sites that are deemed High Risk Health Hazard and
  Health Hazard by the water system must be
  protected by an approved RP, RP detector
  assembly, or an air gap (premises isolation
  only).
• Sites that are deemed Low Hazards may be
  protected by DC, RP, DC detector, RP detector, or
  air gap (premise isolation only).
• Only Class 1-3 Commercial fire prevention systems
  (non-chemical fire lines) may allow DC and DC
  detector assemblies. See document entitled State
  Guidance on Residential and Commercial Fire
  Sprinkler Systems.
• Lawn Irrigation systems supplied by the water
  system must have an approved RP or RP detector
  assembly at minimum. See document entitled
  State Guidance on Lawn Irrigation Systems.
• Residential Fire Systems Flow-Through and
  Combination systems do not require the use of
  assemblies. Closed Residential Fire Systems
  require a DC at minimum.

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• Backflow Prevention Assembly Installation and
  Repair
• All assemblies must be approved. See document
  entitled State Guidance for Approved Backflow
  Prevention Assemblies.
• Assemblies are installed in the approved
  orientation.
• Installation of assemblies should follow criteria
  set forth in States Cross-Connection Control
  Manual and in plan.
• RP assemblies must never be placed in a pit,
  vault, or area subject to flooding.
• The RPs relief valve must have an approved air
  gap and can never be submerged or directly
  connected to a drainage system of any sort.
• The assembly must never be altered.
• After assembly is installed, it is must pass the
  initial performance evaluation and be inspected
  for satisfaction of all installation criteria.
  The inspection is documented.
• Assemblies must be repaired according to
  manufacturers procedures with approved parts.
• After repair, the assembly must be tested and
  have a status of Passed.

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Contact Info

• Division of Water Supply Staff-Johnson City Field
  Office
• Travis Aslinger
• Cross-Connection Control
• Division of Water Supply
• 615-532-9199
• James.T.Aslinger _at_state.tn.us