Accessibility Statement

Chapter 07 Article 07 Cross-Connection and Backflow Control


7-701 Purpose.

The purpose of this chapter is as his chapter is as follows:

(a) To protect the public potable water supply of the City of Rock Springs from the possibility of contamination or pollution by isolating, at the service connection, such contaminants or pollutants which could backflow or back-siphon into the public water system;

(b) To promote the elimination or control of existing cross-connections, actual or potential, between the customer's in-plant potable water system(s) and non-potable systems, plumbing fixtures, and industrial piping systems; and

(c) To provide for the maintenance of a continuing program of cross-connection control which will systematically effectively prevent the contamination or pollution of all potable water systems by cross-connection.

(97-11, Amended, 10/07/1997, Ord. 04-11, 6/1/04))

7-702 Authority.

(a) The Federal Safe Drinking Water Act of 1974 and Department of Environmental Quality, Water Quality Rules and Regulations Chapter 12 adopted in 2003, provides that water suppliers have the primary responsibility for preventing water from unapproved sources, or any other substances, from entering public potable water systems.

(b) The City of Rock Springs Municipal Ordinance 7-403, provides that the City water supplier shall carry on a continuing program to detect health hazards and sanitary defects within the water distribution system, shall report the existence of such hazards and defects, and shall recommend the best method of correcting the hazards and defects.

(97-11, Amended, 10/07/1997)

7-703 Responsibility.

The implementation of this chapter requires the full cooperation of the Customer and the City of Rock Springs (represented by the City of Rock Springs Building Inspection Office).

The interests and responsibilities of each is delineated as follows:

(a) Customer. The Customer has the primary responsibility for preventing pollutants and contaminants from entering his potable water system or the public water system. The Customer's responsibility starts at the point of delivery (service connection corporation valve) and includes all of his internal water system. The Customer, at his own expense, shall install, operate, test, and maintain approved backflow prevention devices as required by this article.

(b) City of Rock Springs Building Inspection Office. The City of Rock Springs, through the Plumbing Inspector of the Rock Springs Building Inspection Office, has the responsibility to review building plans and inspect plumbing as it is installed, as to prevent cross-connections from being designed and built into structures within the plumbing inspector's jurisdiction. The plumbing official's inspection responsibility begins at the service connection corporation valve or water meter pit (on the customer side at this location) and continues throughout the entire extent of the customer's potable water system. Where any possibility that a cross-connection might be made or where one is actually indicated by the plans, it shall be mandatory that approved backflow prevention devices be indicated by the plans as determined by the degree of hazard that the inspector reasonably determines will be present, and such devices shall be properly installed.

(c) Rock Springs MunicRock Springs Municipal Utility Office. The City of Rock Springs, through its Utility Office, the Rock Springs Municipal Utilities Office, has the responsibility of owning, operating, and maintaining the public water system beginning at the source of supply and including adequate treatment facilities, a public water distribution system and service piping, and ending at the point of delivery to the Customer's water system (service connection corporation valve). In addition, the Rock Springs Municipal Utility shall exercise reasonable vigilance to insure that the Customer has taken the proper steps to protect the public potabt the public potable water system. If, in the judgment of the Administrator, an approved backflow device is required at the City's water service connection any customer's premises, the Administrator, or his delegated agent, may require by notice in writing to said customer, that approved backflow prevention devices be installed.

(97-11, Amended, 10/07/1997)

7-704 Definitions.

The following definitions shall apply to this article:

(a) Administrator. The Director of Public Services or his appointed designees.

(b) Aggrieved Customer. A customer who has incurred additional equipment costs or labor costs due to a decision of the Administrator (or his designated agent) or the Rock Springs Building Inspector, under Article 7 of the ordinances of the City of Rock Springs.

(c) Appeals Board. A board consisting of the Water Sewer Committee of the Governing Body of the City of Rock Springs whose jurisdiction includes the review of appeals of aggrieved customers under Article 7 of the Ordinances of the City of Rock Springs.

(d) Approved. Accepted by the Administrator as meeting an applicable specification stated or cited in this chapter, or as suitable for the proposed use.

(e) Auxiliary Water Supply. Any water supply on or available to the customer's premises other than the supplier's approved public potable water supply. Auxiliary water may include water from another supplier's public potable water supply or any natural sources) such as a well, springs, river, stream, etc., or "used waters" or "industrial fluids." These waters may be contaminated or polluted, or they may be objectionable and constitute an unacceptable water source of which the water supplier does not have sanitary control.

(f) Backflow. The flow of water or other liquids, mixtures, or substances, under pubstances, under positive or reduced pressure into the distribution pipes of the potable water supply from any source other than its intended source.

(g) Backflow Preventer. A device or means designed to prevent backflow or back-siphonage events from contaminating the potable water supply system. Most commonly categorized as air gap, reduced pressure principle device, double check valve assembly, double detector check valve assembly, pressure vacuum breaker, atmospheric vacuum breaker, and double check with intermediate atmospheric vent.

1. Air Gap. A physical separation sufficient to prevent backflow between the free-flowing discharge end of the potable water system and any other system. Physically defined as a distance equal to twice the diameter of the supply side pipe diameter but never less than one inch (1").

2. Atmospheric Vacuum Breaker. A device which prevents back-siphonage by creating an atmospheric vent when there is either a negative pressure or sub-atmospheric pressure in the water system. These devices are not suitable for protection against back-pressure events. These devices shall be installed vertically, must not have shut-off downstream, and must be installed at least six inches (6") higher than the final outlet.

3. Double Check Valve Assembly. An assembly of two (2) independently operating spring loaded check valves with tightly closing shut-off valves on each side of the check valves, plus properly located test cocks for the testing of each check valve. To be approved, these devices must be readily accessible for in-line testing and maintenance.

4. Double Check Valve with Intermediate Atmospheric Vent. A device having two (2) spring loaded check valves separated by an atmospheric vent chamber.

5. Double Detector Check Valve Assembly. An assembly consisting of a double check valve assembly in parallel with a bypass line assembly consisting of a water meter in series with a double check valve, and two (2) tightly closing shut-off valves.

6. Pressure Vacuum Breaker. A device containing one or two independently operated spring loaded check valves and an independently operated spring loaded air inlet valve located on the discharge side of the check or checks. Device includes tightly closing shut-off valves on each side of the check valves and properly located test cocks for the testing of the check valve(s). These devices are not suitable for protection against back-pressure events.

7. Reduced Pressure Principle Backflow Preventer. An assembly consisting of two (2) independently operating approved check valves with an automatically operating differential relief valve located between the two (2) check valves, tightly closing shut-off valves on each side of the check valves plus properly located test cocks for the testing of the check valves and the relief valve.

(h) Backpressure. A condition in which the consumer's system pressure is greater than the supplier's system pressure.

(i) Back-siphonage. The flow of water or other liquids, mixtures, or substances into the distribution pipes of a potable water supply system from any source other than its intended source caused by the sudden reduction of pressure in the potable water supply system.

( j) City. City means the governing body of the City of Rock Springs, Wyoming.

(k) Customer. Any residential, commercial, industrial owner, or other user of water where the water supply is physically connected to the public potable water system.

(l) Containment. A method of backflow prevention which requires a backflow preventer at the water service entrance.

(m) Contaminant. A substance that will impair the quality of the water to a degree that it creates a serious health hazard to the public leading to poisoning or the spread of disease.

(n) Cross-connection. Any actual or potential connection between the public water supply and a source of contamination or pollution.

(o) Fixture Isolation. A method of backflow prevention in which a backflow preventer is located to correct a cross-connection at an in-plant location rather than at a water service entrance.

(p) Industrial Fluid. A fluid or solution which may be chemically, biologically, or otherwise contaminated or polluted in a form or concentration such as would constitute a health, system, pollution, or plumbing hazard if introduced into an approved water supply. This may include, but not be limited to: polluted or contaminated waters; all types of process waters and "used waters" originating from the public potable water system which may have deteriorated in sanitary quality; chemicals in fluid form; plating acids and alkalies, circulating cooling waters connected to an open cooling tower and/or cooling towers that are chemically or biologically treated or stabilized with toxic substances; contaminated natural waters such as from wells, springs, streams, rivers, bays, harbors, seas, irrigation canals, or systems, etc.; oils, gases, glycerine, paraffins, caustic and acid solutions and other liquid and gaseous fluids used in industrial or other purposes or other purposes or for fire-fighting purposes.

(q) Owner. Any person who has legal title to, or license to operate or habitat in, a property upon which a cross-connection inspection is to be made or upon which a cross-connection is present.

(r) Pollutant. A foreign substance that, if permitted to get into the public water system, will degrade the quality of the potable water supply so as to constitute a moderate hazard, or impair the usefulness or quality of the water to a degree which does not create an actual hazard to the public health but which does adversely and unreasonably affect such water for domestic use.

(s) Water Service Connection. The terminal end of a service connection from the public potable water system; i.e., the point at which the water purveyor loses jurisdiction and sanitary control over the water, said point being the point of delivery to the customer's water system (water main corporation valve). There shall be no unprotected takeoffs from the service line ahead of any meter or backflow prevention device located on the customer's water system. Service connection shall also include water service connection from a fire hydrant and all other temporary or emergency water service connections from the public potable water system.

(t) Water-Used. The condition of water purveyor supplied water after it has passed through the point of delivery of the customer's water system, the "used water" being no longer under the sanitary control of the water purveyor.

(97-11, Amended, 10/07/1997)

7-705 Administration.

(a) The City of Rock Springs will operate a cross-connection control program, to include the keeping of necessary records.

(b) The Customer shall allow his property to be inspected for possible cross-connections and shall follow the provisions of this chapter.

(c) If the Administrator requires that the public potable water supply be protected by containment, the Customer shall be responsible for water quality beyond the outlet end of the containment device and should utilize fixture outlet protection for that purpose.

The Customer may utilize public health officials, or personnel from the Municipal Utilities Office, or their delegated representatives, to assist him in the survey of his facilities and to assist him in the selection of proper fixture outlet devices, and the proper installation of these devices.

(97-11, Amended, 10/07/1997)

7-706 Requirements.

(a) City of Rock Springs.

1. On new installations, the City of Rock Springs Building Inspector will provide on-site evaluation and/or inspection of plans in order to determine the type of backflow preventer, if any, that will be required and will perform an inspection of installation. Cross-connection or backflow control devices installed for new or remodeled premises shall be as required by the Adopted Plumbing Code, latest edition and DEQ Water Quality Rules and Regulations - Chapter 12. Under no circumstances is this chapter to be construed as superseding any of the requirements of the Adopted Plumbing Code, latest edition.

2. For existing commercial or industrial premises, the City of Rock Springs Water Operations Personnel and/or the City of Rock Springs Building Inspector will perform evaluations and inspections of plans and/or premises and inform the owner by letter of any corrective action deemed necessary, a suggested method of achieving the correction, and the time allowed for the correction to be made. The time allowed for actual installation of backflow/back-siphonage equipment shall be determined based on the degree of hazard presented by each individual situation, as determined by the Administrator, or his delegated agent. Premises found to be in need of cross-connection or backflow prevention devices, but also noted by the Administrator to exhibit a low degree of hazard, shall be allowed no more than thirty (30) months to provide the necessary cross-connection or backflow prevention device. Failure or refusal to install the required device(s) shall constitute grounds for discontinuing water service to the premises until such device(s) have been properly installed.

3. The Department will not allow any cross-connection to remain.

4. If the Administrator determines at any time that a high degree of hazard is present and a serious threat to the public health exists, the water service for that premise will be terminated immediately.

5. Approved backflow/back-siphonage device testing personnel as recognized by the City of Rock Springs shall include all commercial plumbers certified in handling backflow/back-siphonage devices. In addition, testing personnel certified by The American Society Sanitary Engineers (ASSE), American Backflow Prevention Association (ABPA), or a State certification program approved by the administrator shall be considered acceptable for backflow/back-siphonage device testing, provided that the individual's licensing credentials are demonstrated to and are acceptable to the Administrator, and that the individual holds a current City of Rock Springs contractor's registration.

6. Residential water service connections shall be considered to be low hazard back-siphonage connections, unless determined otherwise by a hazard classification.

(b) Customer.

1. The Customer shall be responsible for the elimination or protection of all cross-connections on his premises.

2. The Customer, after having been informed by a letter from the Administrator, shall at his expense install, maintain, and test, or have tested, any and all backflow preventers on his premises.

3. The Customer shall correct any malfunction of the backflow preventer which is revealed by periodic testing.

4. The Customer shall inform the Administrator of any proposed or modified cross-connections and also of any existing cross-connections of which the Customer is aware but has not be identified by the Rock Springs Municipal Utilities Office or the Rock Springs Plumbing Inspector.

5. The Customer shall not install a bypass around any backflow preventer unless there is a backflow preventer of the same type on the bypass. Customers who cannot shut down operation for testing of the device(s) must supply additional devices necessary to allow testing to take place.

6. The Customer shall install backflow preventers in a manner approved by the Municipal Utilities Department and the Rock Springs Building Inspection Office.

The Term "Approved Backflow Prevention Device" shall mean a device that has been investigated and approved b;y the Administrator and the Building Inspection Office. Approval shall be on the basis of the backflow prevention device completely meeting the laboratory and field performance specifications of backflow prevention devices, most current issue, as published by the Foundation for Cross-Connection Control and Hydraulic Research of the University of Southern California. Backflow prevention device approval, based on other approved testing laboratories and favorable reports, may be considered by the Administrator and the Building Inspection Office. All applicable backflow prevention device standards as specified in the Adopted Plumbing Code, latest addition, shall apply.

7. Backflow prevention assemblies shall be located so as to be readily accessible for maintenance, testing, and protected from freezing. No reduced pressure principle backflow prevention assembly shall be located where it will be submerged or subject to flooding by any fluid.

8. Any Customer having a private well or other private water source shall inform the Administrator. Permission to cross-connect may be denied by the Administrator. The Customer shall be required to install a backflow preventer at the service connection if a private water source is maintained, even if it is not cross-connected to the City's potable water system.

9. In the event the Customer installs plumbing to provide potable water for domestic purposes which is on the Municipal Utilities' side of the backflow preventer, such plumbing must have its own backflow preventer installed.

10. The Customer shall be responsible for the payment of all fees for bi-annual (or more frequent) device resting, re-testing in the case that the device fails to operate correctly, and second reinspection for non-compliance with this chapter.

(97-11, Amended, 10/07/1997, Ord. 04-11, 6/1/04)

7-707 Degree of Hazard.

The City of Rock Springs recognizes the threat to the public water system arising from cross-connections. All threats will be classified by degree of hazard and will require the installation of approved cross-connection or backflow prevention devices.

(97-11, Amended, 10/07/1997)

7-708 Existing In-Use Backflow Prevention Devices.

Any existing backflow preventer shall be allowed by the Administrator to continue in service unless the degree of hazard is such as to supersede the effectiveness of the present backflow preventer, or result in an unreasonable risk to the public health. Where the degree of hazard has increased, as in the case of a residential installation converting to an at-risk business establishment, and existing backflow preventer must be upgraded to a device providing protection for the new degree of hazard present, as determined by the Administrator.

(97-11, Amended, 10/07/1997)

7-709 Periodic Testing.

(a) It shall be the duty of the Customer at any commercial or industrial establishment where backflow prevention devices are installed to have certified inspections and operational tests made at least once every year. In those instances where the Administrator deems the degree of hazard to be great enough he may require certified inspections at more frequent intervals.

(b) Periodic inspections and tests shall be at the sole expense of the customer.

(c) Inspections shall be performed by a tester approved by the City of Rock Springs (Section 7-706.(a)(5). It shall be the duty of the Customer to see that these tests are made in a timely manner, and that the results of these tests are submitted to the administrator within one (1) month of the expiration of the prescribed time period, the actual test having been performed not more than three (3) months prior to the expiration of the prescribed time period.

(d) Any backflow preventer which fails during a periodic test shall be repaired or replaced at the expense of the Customer. When repairs are necessary, upon completion of the repair the device will be re-tested at owners expense to insure correct operation. High hazard situations will not be allowed to continue unprotected if the backflow preventer fails the test and cannot be repaired immediately. In other situations, a compliance date of not more than thirty (30) days after the test date will be established. The Customer is responsible for spare parts, repair tools, or a replacement device.

(e) Backflow prevention devices will be tested more frequently than specified in Section 7-709(a) in cases where there is a history of test failures and the Administrator requires that due to the degree of hazard involved, additional testing is warranted. Cost of the additional tests will be borne by the Customer.

(97-11, Amended, 10/07/1997, Ord. 04-11, 6/1/04)

7-710 Appeals.

(a) An aggrieved customer who is desirous of appealing a decision of the Administrator or Building Inspector, shall do so by filing a written Notice of Appeal to the Appeals Board by mailing the Notice to the Rock Springs Water and Sewer Committee, 212 D Street, Rock Springs, WY 82901.

(b) The Notice of Appeal shall be filed within thirty (30) days of the decision of the Administrator or Building Inspector.

(c) The Notice of Appeal shall contain a copy of the decision which is the basis of the appeal and a short statement summarizing the reasons for the appeal.

(d) Upon receipt of the Notice of Appeal, the Appeals Board shall set the appeal for a hearing within ten (10) business days. The Appeals Board shall send written notice of the setting to the Administrator and the Aggrieved customer.

(e) Hearing: The Appeals Board shall permit sworn testimony from the aggrieved customer, the Administrator or his designee, the Building Inspector and any other individual who has knowledge which would aid the Appeals Board in rendering a decision on the appeal. The Appeals Board shall permit Cross Examination of any witness, if desired. The Appeals Board shall render a decision in writing within ten (10) days of the hearing. Said decision shall contain Findings of Fact and Conclusions of Law.

(97-11, Amended, 10/07/1997)

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