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.
|
Table 1
| ||
---|---|---|
Premises Isolation—Description of Premises
|
Assessment of Hazard
|
Required Assembly
|
Aircraft and other 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
|
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
|
Sewage treatment plants
|
Health
|
RPBA or AG
|
Slaughter houses
|
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
|
Table 2
| ||
---|---|---|
Internal Protection—Description of Cross Connection
|
Assessment of Hazard
|
Required Assembly
|
Aspirators
|
Nonhealth*
|
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 salt-water 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*
|
DCVA
|
Domestic space-heating boiler
|
Nonhealth*
|
RPBA
|
Dye vats or machines
|
Health
|
RPBA
|
Fire-fighting system (toxic liquid foam concentrates)
|
Health
|
RPBA
|
Flexible shower heads
|
Nonhealth*
|
AVB or PVB
|
Heating equipment
|
|
|
Commercial
|
Nonhealth*
|
RPBA
|
Domestic
|
Nonhealth*
|
DCVA
|
Hose bibbs
|
Nonhealth*
|
AVB
|
Irrigation Systems
|
|
|
with chemical additives
|
Health
|
RPBA
|
without chemical additives
|
Nonhealth*
|
DCVA, AVB, or PVB
|
Kitchen equipment—Commercial
|
Nonhealth*
|
AVB
|
Lab bench equipment
|
Health or Nonhealth*
|
AVB or PVB
|
Ornamental fountains
|
Health
|
AVB or PVB
|
Swimming pools
|
|
|
Private
|
Nonhealth*
|
PVB or AG
|
Public
|
Nonhealth*
|
RPBA or AG
|
Sewage pump
|
Health
|
AG
|
Sewage ejectors
|
Health
|
AG
|
Shampoo basins
|
Nonhealth*
|
AVB
|
Specimen tanks
|
Health
|
AVB or PVB
|
Steam generators
|
Nonhealth*
|
RPBA
|
Steam tables
|
Nonhealth*
|
AVB
|
Sterilizers
|
Health
|
RPBA
|
Tank vats or other vessels containing toxic substances
|
Health
|
RPBA
|
Trap primers
|
Health
|
AG
|
Vending machines
|
Nonhealth*
|
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 may be required.
|
*Where a greater hazard exists (due to toxicity or other potential
health impact) additional area protection with RPBA is required.
|