§ 2-31-305. Backflow prevention assembly systems.

(a)

Approved backflow prevention assemblies. Approved backflow prevention assemblies shall have the following features:

(1)

Shall be testable in line.

(2)

Shall be repairable in line.

(3)

Shall have approved shut-off valves located at each end of the backflow prevention assembly.

(4)

Shall be supplied with ammonia resistant silicone discs or other material having the same ammonia resistant properties and approved by the department.

(b)

Hazard classifications. Unless otherwise specified in this article, the department shall use the American Water Works Association (AWWA) standards and guidelines in determining all classifications of hazards. Single-family residential facilities shall be evaluated on a case-by-case basis. If such residential facilities have auxiliary water sources or other types of systems or operations on-site which would classify the system as hazardous or are located in a flood zone, an approved backflow prevention assembly shall be required. Multistory and multifamily residential facilities with a single service connection or individual service connections having auxiliary water or other types of systems or operations on-site that would classify the system as hazardous or are located in a flood zone shall have an approved reduced pressure principle backflow prevention assembly installed as required by this article.

(Ord. No. 13-35, § 6, 10-22-13)