§ 44-313. Assessment of hazard and selection of assemblies.

Figure: 30 TAC § 290.47(I)

Appendix I: Assessment of Hazards and Selection of Assemblies

The following table lists many common hazards. It is not an all-inclusive list of the hazards which may be found connected to public water systems.

Premises Isolation (Description of Premises)	Assessment of Hazard	Required Assembly
Aircraft and missile plants	Health	RPBA or AG
Animal feedlots	Health	RPBA or AG
Automotive plants	Health	RPBA or AG
Breweries	Health	RPBA or AG
Canneries, packing houses and rendering plants	Health	RPBA or AG
Commercial car wash facilities	Health	RPBA or AG
Commercial laundries	Health	RPBA or AG
Cold storage facilities	Health	RPBA or AG
Connection to sewer pipe	Health	AG
Dairies	Health	RPBA or AG
Docks and dockside facilities	Health	RPBA or AG
Dye works	Health	RPBA or AG
Food and beverage processing plants	Health	RPBA or AG
Hospitals, morgues, mortuaries, medical clinics, dental clinics, veterinary clinics, autopsy facilities, sanitariums, and medical labs	Health	RPBA or AG
Metal manufacturing, cleaning, processing, and fabrication plants	Health	RPBA or AG
Microchip fabrication facilities	Health	RPBA or AG
Paper and paper products plants	Health	RPBA or AG
Petroleum processing or storage facilities	Health	RPBA or AG
Photo and film processing labs	Health	RPBA or AG
Plants using radioactive material	Health	RPBA or AG
Plating or chemical plants	Health	RPBA or AG
Pleasure-boat marinas	Health	RPBA or AG
Private/individual/unmonitored wells	Health	RPBA or AG
Reclaimed water systems	Health	RPBA or AG
Restricted, classified or other closed facilities	Health	RPBA or AG
Rubber plants	Health	RPBA or AG
Sewage lift stations	Health	RPBA or AG
Sewerage treatment plants	Health	RPBA or AG
Slaughterhouses	Health	RPBA or AG
Steam plants	Health	RPBA or AG
Tall buildings or elevation differences where the highest outlet is 80 feet or more above the meter	Nonhealth	DCVA
Internal Protection—Description of Cross Connection	Assessment of Hazard	Recommended Assembly
Aspirators	Nonhealth;sd;	AVB
Aspirator (medical)	Health	AVB or PVB
Autoclaves	Health	RPBA
Autopsy and mortuary equipment	Health	AVB or PVB
Bedpan washers	Health	AVB or PVB
Connection to industrial fluid systems	Health	RPBA
Connection to plating tanks	Health	RPBA
Connection to saltwater cooling systems	Health	RPBA
Connection to sewer pipe	Health	AG
Cooling towers with chemical additives	Health	AG
Cuspidors	Health	AVB or PVB
Degreasing equipment	Nonhealth;sd;	DCVA
Domestic space heating boiler	Nonhealth;sd;	RPBA
Dye vats or machines	Health	RPBA
Firefighting system (toxic liquid foam concentrates)	Health	RPBA
Flexible showerheads	Nonhealth;sd;	AVB or PVB
Heating equipment
Commercial	Nonhealth;sd;	RPBA
Domestic	Nonhealth;sd;	DCVA
Hose bibbs	Nonhealth;sd;	AVB
Irrigation systems
With chemical additives	Health	RPBA
without chemical additives	Nonhealth;sd;	DCVA, AVB, or PVB
Kitchen equipment—Commercial	Nonhealth;sd;	AVB
Lab bench equipment	Health or Nonhealth;sd;	AVB or PVB
Ornamental fountains	Health	AVB or PVB
Swimming pools
Private	Nonhealth;sd;	PVB or AG
Public	Nonhealth;sd;	RPBA or AG
Sewage pump	Health	AG
Sewage ejectors	Health	AG
Shampoo basins	Nonhealth;sd;	AVB
Specimen tanks	Health	AVB or PVB
Steam generators	Nonhealth;sd;	RPBA
Steam tables	Nonhealth;sd;	AVB
Sterilizers	Health	RPBA
Tank vats or other vessels containing toxic substances	Health	RPBA
Trap primers	Health	AG
Vending machines	Nonhealth;sd;	RPBA or PVB
Watering troughs	Health	AG or PVB

 

Note—AG = air gap; AVB = atmospheric vacuum breaker; DCVA = double check valve backflow prevention assembly; PVB = pressure vacuum breaker; RPBA = reduced-pressure principle backflow prevention assembly.

AVBs and PVBs may be used to isolate health hazards under certain conditions, that is, backsiphonage situations. Additional area of premises isolation may be required.

;sd;Where a greater hazard exists (due to toxicity or other potential health impact) additional area protection with RPBAs is required

(Ord. No. 07-48, exh. A, 11-19-2007)