§ 33-90. Backflow prevention device required for specified activities.

(a)

When any of the following activities are conducted on premises served by the public potable water system, a potential hazard to the public potable water supply shall be presumed and a backflow prevention device, of the type specified for that activity herein, must be utilized or installed at the service connection for that service address.

(1)

Aircraft and missile plants: RP

(2)

Animal clinics and animal grooming shops: RP

(3)

Any premises where a cross-connection is maintained: RP

(4)

Automotive repair with steam cleaner, acid cleaning equipment, or solvent facilities: RP

(5)

Auxiliary water system: RP

(6)

Bottling plants, beverage or chemical: RP

(7)

Breweries: RP

(8)

Buildings greater than three (3) stories or greater than thirty-four (34) feet in height from curb level: RP

(9)

Buildings with house pumps and/or potable water storage tank: DC

(10)

Buildings with landscape fountains, ponds, or baptismal tanks: RP or Air Gap

(11)

Buildings with sewage ejectors: RP

(12)

Canneries, packing houses, and reduction plants: RP

(13)

Car wash facilities: RP

(14)

Centralized heating and air-conditioning plants: RP

(15)

Chemical plants: RP

(16)

Chemically treated potable or non-potable water systems: RP

(17)

Civil works (government owned or operated facilities not open for inspection by the City): RP

(18)

Commercial laundries: RP

(19)

Dairies and cold storage plants: DC

(20)

Dye works: RP

(21)

Film processing laboratories: RP

(22)

Fire systems-American Water Works Association classes 1, 2, 3. All systems six (6) inches in size and larger or any system constructed of a piping material not approved as a potable water system material per the Uniform Plumbing Code as adopted by the City: DC

(23)

Fire systems-American Water Works Association Classes 4, 5, 6: RP

(24)

Fire systems-Where backflow protection is required on the industrial/domestic service connection that is located on the same premises, both service connections will have adequate backflow protection for the highest degree of hazard effecting either system.

(25)

Flood processing plants: RP

(26)

Schools and colleges: RP

(27)

Holding tank disposal stations: RP

(28)

Hospitals and mortuaries: RP

(29)

Medical and dental buildings, sanitariums, rest and convalescent homes engaged in the diagnosis, care or treatment of human illness: RP

(30)

Irrigation systems (not to include single-family detached residences):

a.

Service addresses having separate systems used in elevated areas or with drip irrigation: RP

b.

Service addresses having non-potable water piping (lawn sprinklers) two (2) inches and smaller: RP

(31)

Laboratories using toxic materials: RP

(32)

Manufacturing, processing, and fabricating plants using toxic or nontoxic materials: RP

(33)

Mobile home parks: RP

(34)

Motion picture studios: RP

(35)

Multiple services, interconnected: RP

(36)

Oil and gas production facilities: RP

(37)

Paper and paper production plants: RP

(38)

Plating plants: RP

(39)

Portable insecticide and herbicide spray tanks: RP or Air Gap.

(40)

Power plants: RP

(41)

Radioactive materials processing facilities: RP

(42)

Restricted, classified, or other closed facilities: RP

(43)

Rubber plants: RP

(44)

Sand and gravel plants: RP

(45)

Sewage and storm drainage facilities: RP

(46)

Shopping centers: DC

(47)

Street sweepers, steel wheeled rollers: RP or Air Gap.

(48)

Water trucks, water tanks or hydraulic sewer cleaning equipment: RP or Air Gap.

(49)

Hotels, motels and resorts: RP

(50)

Restaurants & bakeries: RP

(51)

Multi-family: RP

(b)

When two (2) or more of the activities listed above are conducted on the same service address and served by the same service connection, the most restrictive backflow prevention device required for any of the activities conducted on the service address shall be required to be utilized or installed at the service connection. The order of most restrictive to least restrictive backflow prevention devices shall be as follows:

(1)

Air gap (most restrictive);

(2)

Reduced pressure principal assembly (RP);

(3)

Pressure vacuum breaker assembly (PVB);

(4)

Double check valve assembly (DC) (least restrictive).

(Ord. No. 3003, § 1(Exh. A), 9-27-16)