9.18.050 Requirements.
A. Commercial, industrial and multifamily service connections shall be subject to a survey for cross-connections. If a cross-connection has been identified an appropriate backflow prevention assembly and/or method shall be installed at the customer’s water service connection within one hundred twenty (120) days of its discovery. The assembly shall be installed downstream of the water meter or as close to that location as deemed practical by the Town. If the assembly or method cannot be installed within one hundred twenty (120) days the Town must take action to control or remove the cross-connection, suspend service to the cross-connection or receive an alternative compliance schedule from the Colorado Department of Public Health and Environment.
B. In no case shall it be permissible to have connections or tees between the meter and the containment backflow prevention assembly.
1. In instances where a reduced pressure principle backflow preventer cannot be installed, the owner must install approved backflow prevention devices or methods at all cross-connections within the owner’s plumbing system.
C. Backflow prevention assemblies and methods shall be installed in a location which provides access for maintenance, testing and repair.
D. Reduced pressure principle backflow preventers shall not be installed in a manner subject to flooding.
E. Provisions shall be made to provide adequate drainage from the discharge of water from reduced pressure principle backflow prevention assemblies. Such discharge shall be conveyed in a manner which does not impact waters of the State.
F. All assemblies and methods shall be protected to prevent freezing. Those assemblies and methods used for seasonal services may be removed in lieu of being protected from freezing. The assemblies and methods must be reinstalled and then tested by a certified cross-connection control technician upon reinstallation.
G. Where a backflow prevention assembly or method is installed on a water supply system using storage water heating equipment such that thermal expansion causes an increase in pressure, a device for controlling pressure shall be installed.
H. All backflow prevention assemblies shall be tested at the time of installation and on an annual schedule thereafter. Such tests must be conducted by a certified cross-connection control technician.
I. The Town shall require inspection, testing, maintenance and as needed repairs and replacement of all backflow prevention assemblies and methods, and of all required installations within the owner’s plumbing system in the cases where containment assemblies and/or methods cannot be installed.
J. All costs for design, installation, maintenance, testing and as needed repair and replacement are to be borne by the customer.
K. No grandfather clauses exist except for fire sprinkler systems where the installation of a backflow prevention assembly or method will compromise the integrity of the fire sprinkler system.
L. For new buildings, all building plans must be submitted to the Town and approved prior to the issuance of water service. Building plans must show:
1. Water service type, size and location.
2. Meter size and location.
3. Backflow prevention assembly size, type and location.
4. Fire sprinkler system(s) service line, size and type of backflow prevention assembly.
a. All fire sprinkling lines shall have a minimum protection of an approved double check valve assembly for containment of the system.
b. All glycol (ethylene or propylene) or antifreeze systems shall have an approved reduced pressure principle backflow preventer for containment.
c. Dry fire systems shall have an approved double check valve assembly installed upstream of the air pressure valve.
d. In cases where the installation of a backflow prevention assembly or method will compromise the integrity of the fire sprinkler system the Town may waive these backflow prevention requirements herein. The Town will measure chlorine residual at location representative of the service connection once a month and perform periodic bacteriological testing at the site. If the Town suspects water quality issues it will evaluate the practicability of requiring that the fire sprinkler system be flushed periodically. (Ord. 771 §2 (Exh. A), 2019)