Guide to degree of hazard
Standard CSA B64.10-07/B64.10.1-07, Selection and Installation of Backflow Preventers/Maintenance and Field Testing of Backflow Preventers (2008), has categorized the following building types or facilities with the indicated degree of hazard.
Severe
- Aquaculture farm
- Aquarium (public)
- Asphalt plant
- Auto body shop
- Automotive repair shop
- Automotive repair
- Beverage processing plant
(includes distillery and brewery) - Blood clinic
- Campsite with RV hook-ups or dump-stations
- Carwash
- Chemical plant
- Concrete plant
- Dental surgery facility
- Dock and marine facility
- Dry cleaning plant
- Dye plant
- Exhibition ground
- Film processing facility
- Fish farms or hatchery
- Food processing plant
- Garbage transfer facility
- Hospital
- Laboratory
- Laundry (commercial)
- Meat packing plant
- Medical clinic (surgical)
- Milk processing plant
- Mining facility
- Mortuary or morgue
- Motorcycle repair facility
- Oil refinery
- Paint manufacturing plant
- Petroleum processing or storage facility
- Pharmaceutical manufacturing facility
- Photo processing facility
- Plants using radioactive material
- Plastic manufacturing plant
- Plating shop
- Poultry farm
- Power generating facility
- Premises where access is prohibited
- Printing plant
- Pulp and/or paper plant
- Radiator shop
- Recycling facility
- Refinery, petroleum processing
- Rendering facility
- Research building
- Sewage dump station
- Sewage treatment plant
- Steel manufacturing plant
- Wastewater facility
- Wastewater pump station
- Wastewater treatment plant
- Water filling station
- Water treatment plant
- Water treatment pump station
- Zoo
Moderate to severe
- Animal feed lot
- Animal stock yard
- Commercial premises
- Farm
- Fire station
- Funeral home
- Golf course
- Industrial and institutional premises
- Marina (pleasure-boat)
- University
- Veterinary clinic
- Waste disposal plant
Moderate
- Airport
- Apartment building
- Arena
- Auto dealership
- Campsite
- Dental office
- Fuel dispensing facility
- Grocer
- Hair salon
- Hotel
- Kennel
- Laundry (commercial, coin-operated)
- Manufacturing plant (not specified)
- Medical clinic (non surgical)
- Mobile home park
- Motel
- Nursing home
- Penitentiary
- Restaurant
- School
- Swimming pool facility
- Water park
Minor to moderate
- Church
Minor
- Duplex housing with shared service
- Residential premises
- Townhouse (shared services)