Chapter 13.24
CROSS-CONNECTION CONTROL
Sections:
13.24.040 Application and responsibilities.
13.24.060 Backflow prevention assembly requirements.
13.24.090 Installation requirements.
13.24.120 Annual testing and repairs.
13.24.130 Termination of service.
13.24.010 Designation.
This chapter shall be referred to and may be cited as the “Dundee cross-connection control chapter.” [Ord. 486-2009 Exh. A].
13.24.020 Purpose.
The purpose of this chapter is to protect the city’s water supply from contamination or pollution due to existing or potential cross-connections and to comply with the terms of OAR 333-061-0070-0074. [Ord. 486-2009 Exh. A].
13.24.030 Definitions.
For the purposes of this chapter, the following terms shall be defined as listed unless the context requires otherwise.
“Approved backflow prevention assembly,” “backflow assembly” or “assembly” means an assembly used to counteract back pressures or prevent back siphonage.
“Auxiliary supply” means any water source or system other than city-supplied water.
“Backflow” means the flow in the direction opposite to the normal flow or the introduction of any foreign liquids, gases, or substances into the city’s water system.
“City” means the city of Dundee, Oregon.
“Contamination” means the entry into or presence in the city’s water system of any substance which is or may be deleterious to health and/or the quality of the water.
“Cross-connection” means any unprotected actual or potential connection or structural arrangement between a public or a consumer’s potable water system and any other source or system through which it is possible to introduce into any part of the potable system any used water, industrial fluid, gas, or substance other than the intended potable water with which the system is supplied. Bypass arrangements, jumper connections, removable sections, swivel or changeover devices and other temporary or permanent devices through which or because of which backflow can or may occur are considered to be cross-connections.
“Cross-connection specialist” means the certified cross-connection specialist for the city of Dundee.
“Double check valve backflow prevention assembly,” “double detector check assembly” or “double check” means an assembly which consists of two independently operating check valves which are spring-loaded or weighted. The assembly comes complete with a shut-off valve on each side of the checks, as well as test cocks to test the checks for tightness.
“Health hazard” means an actual or potential threat of contamination of a physical or toxic nature to the public potable water system or the consumer’s potable water system that would be a danger to health.
“Potable water supply” means the city’s water supply system intended or used for human consumption/domestic use.
“Premises” means property to which city potable water is provided, including all temporary, permanent or mobile structures located thereon.
“Reduced pressure principle backflow prevention assembly,” “reduced pressure principle assembly” or “RP assembly” means an assembly containing two independent and approved check valves together with a hydraulically operated, mechanically independent pressure differential relief valve located between the check valves, and at the same time, below the first check valve. The assembly shall include properly located test cocks and tightly closing shut-off valves at the end of the assembly. [Ord. 486-2009 Exh. A].
13.24.040 Application and responsibilities.
This chapter applies to every premises served by the city water system. Every owner of said premises is responsible for compliance with this chapter. All costs associated with purchase, installation, inspections, testing, replacement, maintenance, parts and repairs of the backflow assembly are the financial responsibility of the property owner. [Ord. 486-2009 Exh. A].
13.24.050 Cross-connections.
No cross-connections shall be created, installed, used or maintained when served by the city’s water system, unless said cross-connections comply with the applicable requirements of this chapter. [Ord. 486-2009 Exh. A].
13.24.060 Backflow prevention assembly requirements.
Unless determined by the cross-connection specialist not to present a backflow threat to the city’s water supply, all of the following are subject to backflow prevention:
A. Whenever the nature and extent of activity or the materials used in connection with said activity or materials stored at a premises could contaminate or pollute the city’s water supply;
B. When premises has cross-connections;
C. When intricate plumbing arrangements are present that make it impractical to ascertain whether cross-connections exist;
D. Where a used water return system or auxiliary water supply could be connected to the city’s water system;
E. Where there is unduly restricted entry so that inspections for cross-connection cannot be made with sufficient frequency or with sufficient notice to assure that cross-connections do not exist;
F. Where there is a repeated history of cross-connection being established or reestablished;
G. Where materials of a toxic or hazardous nature are being used such that, if backflow should occur, a health hazard could result;
H. Lawn irrigation systems;
I. All water services larger than one inch;
J. Any other water system which receives water from the city and which does not have a cross-connection control program approved by the city;
K. Where the installation of any approved backflow prevention assembly is deemed to be necessary to accomplish the purpose of these regulations in the judgement of the cross-connection specialist. [Ord. 486-2009 Exh. A].
13.24.070 Thermal expansion.
It is the responsibility of the owner to address the possibility of thermal expansion if a closed system has been created by the installation of a backflow prevention assembly. [Ord. 486-2009 Exh. A].
13.24.080 Mobile units.
Any mobile unit or apparatus using city water or water from a premises attached to the city’s system shall first meet all cross-connection requirements imposed by the city and obtain a permit prior to using city water if there is a possibility that the attachment may contaminate the city’s water system. [Ord. 486-2009 Exh. A].
13.24.090 Installation requirements.
All backflow prevention assembly installations shall comply with the requirements of OAR 333-061-0070(8) and 333-061-0071, the Oregon Plumbing Specialty Code, and meet all standards of the Oregon State Health Division. All backflow prevention assemblies required under this section shall be of a type and model approved by the Oregon State Health Division. [Ord. 486-2009 Exh. A].
13.24.100 Fire systems.
An approved double detector check assembly shall be the minimum protection on fire sprinkler systems using piping material that is not approved for potable water use and/or does not provide for periodic flow-through during each 24-hour period. A reduced pressure principle detector assembly (“RPDA”) must be installed if any solution other than potable water can be introduced into the sprinkler system. [Ord. 486-2009 Exh. A].
13.24.110 Access to premises.
Authorized personnel of the city, with proper identification and sufficient notice, shall have access during reasonable hours to all parts of a premises to which the city supplies water in order to ascertain compliance with the requirements of this chapter. [Ord. 486-2009 Exh. A].
13.24.120 Annual testing and repairs.
All backflow prevention assemblies provided water by the city shall be tested consistent with Oregon Health Division Rules at the time of installation, repair or relocation, and at least annually thereafter, by a state-certified backflow prevention assembly tester. Testing shall be more frequently than annually for approved backflow prevention assemblies that repeatedly fail, or are protecting health hazard cross-connections, as determined by the cross-connection specialist. All assemblies found not functioning shall be promptly repaired or replaced. [Ord. 486-2009 Exh. A].
13.24.130 Termination of service.
Consistent with the terms of OAR 333-061-0070(9)(a), the city may cause the discontinuance of water service to the premises for:
A. Failure to remove or eliminate an existing unprotected or potential cross-connection;
B. Failure to install a required approved backflow prevention assembly;
C. Failure to maintain an approved backflow prevention assembly;
D. Failure to conduct the required testing of an approved backflow prevention assembly. [Ord. 486-2009 Exh. A].