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By-Law 09-73
1
THE CORPORATION OF THE
TOWN OF GRIMSBY
By-law No. 09-73
A BY-LAW TO PROTECT THE TOWN OF GRIMSBY'S DRINKING WATER
DISTRIBUTION SYSTEM FROM CONTAMINATION THROUGH CROSS-
CONNECTION AND BACKFLOW
WHEREAS the Town of Grimsby as the Owner of the Grimsby Drinking Water
Distribution System is responsible to operate, maintain and test its water distribution
system in accordance with the Safe Drinking Water Act, 2002, S.O. 2002, C.32 and 0.
Reg 170/03, both as amended, to ensure that all water provided by this system meets
the requirements of the prescribed drinking-water quality standards;
AND WHEREAS The Safe Drinking Water Act, 2002 places a Standard of Care on the
Owner of the municipal drinking water distribution system;
AND WHEREAS The Town of Grimsby wishes to protect its residents and other users
of the Town's drinking water distribution system from deleterious and harmful
contaminants that may enter the water distribution system through cross-connections
and backflow.
NOW THEREFORE THE COUNCIL OF THE CORPORATION OF THE TOWN OF
GRIMSBY ENACTS AS FOLLOWS:
1.
SHORT TITLE
1.0 This By-law may be cited as the "Backflow Prevention By-law".
2.
INTERPRETATION
2.0 For the purposes of this By-law, the following terms shall have the corresponding
meanings:
''Authorized Functions List" means the list of functions and the persons authorized to
carry out such functions as set out in Appendix "A" of this By-law;
"auxiliary water supply" means, when applied to any property or structure, any water
supply on or available to the property or structure other than the Town's primary potable
water supply for the property or structure;
"backflow" means the flowing back of or reversal of the normal direction of flow of water;
By-Law 09-73
2
"backflow device tester'' means a Person, performing or engaging to perform "Backflow
Work"
'backflow prevention device" means a device that prevents backflow certified to the CSA
Standard;
"backflow work" includes performing building surveys to identify cross connections;
selection, testing and repair of backflow prevention devices and completion of test
reports and test tags for backflow prevention devices;
'building" shall have the same meaning as set out in the Ontario Building Code;
"cross-connection" means any actual or potential connection between a
potable water supply or system and any source of pollution or contamination
and includes any by-pass, jumper connection, removable section of pipe,
swivel or changeover device and any other temporary or permanent
connecting arrangement through which backflow may occur;
"cross-connection control survey form" means a form acceptable to the Town containing
information related to the types of cross-connections, the Degree of Hazard (in
accordance with Appendix "B" of this By-law) and the method of
protecting those cross-connections within any building or structure. The form must also
contain owner and contact information for the property;
"CSA Standard" means the document entitled 864.10-071864. 10.1-07
Selection and installation of backflow preventers/Maintenance and field testing of
backflow preventers published in 2007 by the Canadian Standards
Association, or any successor thereof;
"distribution system" means the Town of Grimsby Drinking Water Distribution System
and includes appurtenances and the property service pipe as defined in the Safe
Drinking Water Act, 2002, S.O. 2002, C.32 and O.Reg 170/03;
"Licensed Plumber" means a Person who has been issued a Certificate of
Qualification in the trade of plumber under the Trades Qualification Act and
Apprenticeship Act, R.S.O. 1990, Chapter T.17, or any successor thereof;
"Ontario Building Code" means Ontario Regulation 350/06 (the Ontario
Building Code) or any successor thereof;
By-Law 09-73
3
"owner" means any person, firm or corporation having control over property to which
this By-law applies and includes the owner registered on the title of the property and
any occupant of any building or structure located on such
property;
''potable water" means water that is safe for human consumption;
''premise isolation" means protection provided at the entrance to a building
or structure from the Town's drinking water supply;
''property" means any land within the Town of Grimsby and includes all
buildings or structures;
"qualified person" means a person who is accredited by a School of
Accreditation as an installer and or tester of backflow prevention device;
"School of Accreditation" means any school or college providing a cross-
connection control course in backflow prevention device testing that has been
accredited by an organization or association such as the Ontario Water Works
Association or equivalent as approved by the Town;
"Selection Guide" means the Backflow Prevention Device Selection Guide as set out in
Appendix "B" of this By-law;
"source isolation" means isolation of the water located within or having flowed
through a source or potential source of contamination within a building or
structure including a device, machine, water system or the like, from any
potable water system;
"structure" means anything constructed or built permanently or temporarily
which is provided with a source of potable water;
"test report" means a test report for premise isolation backflow devices
acceptable to the Town containing information related to the qualified person's name,
certification number, employer name. contact information, serial number of test kit and
last calibration date of test kit. The test report must also contain the make, model, serial
number, size, type, location, purpose, installation address and test results of the
backflow prevention device. The form must also contain owner, occupant and contact
information for the property;
By-Law 09-73
4
"test tag" means a tag acceptable to the Town containing information related to the
make, model, serial number, size, type, location, purpose, installation address and test
history of the backflow prevention device;
"Town" means the Corporation of the Town of Grimsby and includes its employees,
servants and agents;
"untreated water" means any water not subject to the requirements of the Ontario Safe
Drinking Water Act 2002. S.O. 2002, C.32;
"water meter" means the water meter installed within a property or structure
to record the amount of water supplied to such property or structure by the; and
"zone isolation" means the isolation of the water located within an area of a building or
structure from any potable water system located within such building or structure.
3. APPLICATION OF BY-LAW
3.0 This By-law applies to existing industrial, commercial, institutional and multi-
residential buildings and structures, except buildings or structures of residential
occupancies which are of three or fewer stories in building height above ground level
and having a building area - total gross floor area not exceeding 600m2 all as defined
in the Ontario Building Code.
3.1 In addition to and notwithstanding section 3.0 of this By-law, this By-law applies
where a condition exists in any building or structure that may be hazardous or
detrimental to the potable water supply.
3.2 Where any requirements of the Ontario Building Code or any other By-law or
Regulation conflict with this By-law, then the requirement which provides the highest
degree of premise isolation shall apply.
4. CROSS-CONNECTION PROHIBITED
4.0 No person or owner shall connect, cause to be connected, or allow to remain
connected to the Town's drinking water distribution system or any other potable water
system any piping, fixture, fitting, container, appliance, vehicle, machine or the like in
a manner which may under any circumstance allow untreated water, waste water or
any other liquid, chemical or substance to enter such supply or system, except in
compliance with the provisions of this By-law.
By-Law 09-73
5
4.1 In addition to section 4.0 of this By-law and in accordance with all other
provisions of this By-law, every owner of property to which this By-law applies shall
ensure that a backflow prevention device is installed in respect of premise isolation,
source isolation and zone isolation in every building or structure where the Town's
drinking water distribution system supply or other potable water supply or connection
exists.
4.2 No person or owner shall connect, cause to be connected, or allow to remain
connected to the Town's drinking water distribution supply any auxiliary water supply
without written approval from the Town.
4.3 No person or owner shall connect, cause to be connected or allow to remain
connected either directly or indirectly to the Town's drinking water distribution system
supply, any untreated water or non-potable water.
4.4 Fire protection systems connected to potable water from the water distribution
system shall be protected against backflow in accordance with CSA Standard.
5. PERSONS PERMITTED TO CARRY OUT WORK
5.0 Only persons listed in the Authorized Functions List shall carry out the
corresponding functions set out in such list and shall be a qualified person.
5.1 (a) every Backflow Device Tester shall have a regular place of business and shall
identify to the Town the mailing address of the business property or structure;
(b) every Backflow Device Tester Company shall list all employees with a current
certificate from a School of Accreditation as a backflow device tester;
(c) every Backflow Device Tester shall provide the following documentation at the
time of the initial installation;
(i)
a current certificate from a School of Accreditation as a certified Backflow
Prevention Device Tester for all their employees performing Backflow
Work;
(ii)
a valid calibration certificate for testing equipment used in the testing
requirements of this By-law.
By-Law 09-73
6
6. APPLICATION OF CSA STANDARD
6.0 Except as otherwise set out in this By-law, the installation, maintenance and field
testing of backflow prevention devices shall be in accordance with the CSA Standard.
6.1 Wherever the CSA Standard and this By-law are in conflict, the provisions which
provide the highest degree of premise isolation shall apply.
7. SELECTION OF BACKFLOW PREVENTION DEVICES
7.0 Every owner of a building or structure of a type set out in Section 3 of this By-law
shall, unless otherwise required by the Town, cause to be carried out a cross-
connection control survey form, of each of their buildings and structures with respect
to all existing cross-connections and all existing and required backflow prevention
devices and:
7.0.1 shall ensure that such survey is carried out on a cross-connection control
survey form by a qualified person permitted to do so pursuant to the Authorized
Functions List; and,
7.0.2 shall ensure that the completed cross-connection control survey form is
provided to the Town within 14 days of the survey being conducted; and,
7.0.3 shall be carried out after the passing of this By-law by the owners of all
required properties and shall be submitted to the Town under section 7 .0.2, of this
By-law, not later than May 1, 201 0; and,
7.0.4 shall also be carried out by the owner within 14 days of any new building,
building expansion or alteration to any buildings' plumbing or operational changes
that my effect the Town's drinking water distribution system.
7.1 Every owner shall ensure that every backflow prevention device required for
premise isolation on their property is a testable device and is the proper device to be
used pursuant to section 7 .2 of this By-law.
7.2 Backflow prevention devices for premise, source or zone isolation shall be
determined:
7.2.1 using the Selection Guide; or
By-Law 09-73
7
7.2.2 when the type of cross-connection is not identified in the Selection Guide, by
the Town.
7.3 Despite section 7.2 of this By-law, the Town may require or permit in writing only,
a particular backflow prevention device to be used in respect of any cross-
connection.
7.4 Despite section 7.2 of this By-law, the Town may permit an existing backflow
prevention device if previously approved but shall be approved only as long as the
safety of the water supply is maintained to the
satisfaction of the Town in its sole discretion.
7.5 Despite section 7.2. of this By-law, where a source isolation backflow prevention
device has been installed by the manufacturer of the equipment, the cross-
connection is required to be reviewed to determine if the backflow prevention device
meets the requirements of the Selection Guide. These cross-connections are to be
indicated on the cross-connection control survey form.
8.INSTALLATION OF BACKFLOW PREVENTION DEVICES
8.0 Every person installing a backflow prevention device shall ensure that:
8.0.1 such device is installed in accordance with manufacturers specifications and
the requirements of the CSA Standard; and,
8.0.2 such device is located in such a manner so that in the event of backflow, the
device prevents contamination of the Town's drinking water supply and any other
potable water system; and,
8.0.3 where such device is installed in respect of premise isolation, such device is
located before the first branch line leading off the water supply line and not more
than 3.0 metres downstream of the water meter, except where circumstances
require the device to be installed upstream of the water meter and such location is
to the satisfaction of the Town; and,
8.0.4 where such device is installed in respect of premise isolation all piping
between the water meter and such device is clearly labeled "no connection
permitted"; and,
By-Law 09-73
8
8.0.5 where such device is installed in respect of source or zone isolation, all
piping between the point of contamination and the point at which the device is
located, is labeled ''non-potable water".
8.1 Every owner of property upon which a backflow prevention device is installed
shall ensure that such device is maintained and in proper working order at all times.
8.2 The Initial Compliance Implementation Date for the owners of all required
buildings and structures existing at the date of the passing of this By-law to meet the
backflow device installation requirements of this By-law shall be no later than:
(i)
July 1, 2010 for all properties as identified as "Severe Hazard" as defined
in Appendix "B" of this By-law and identified under section 7.0 - cross-
connection control survey form requirements of this By-law; and,
(ii)
January 1, 2011 for all properties as identified as "Moderate Hazard" as
defined in Appendix "B" of this By-law and identified under Section 7.0-
cross-connection control survey form requirements of this By-law.
9. TESTING OF DEVICES
9.0 Every owner who has a backflow prevention device located on his or her property
shall ensure that:
9.0.1 such device is tested by a qualified person when it is first installed and shall
be tested annually thereafter or at any other time when requested by the Town and
also when the device is cleaned, repaired, overhauled, replaced or relocated; and,
9.0.2 a test report for a premise isolation device shall be provided to the Town
within fourteen days of the test being conducted; and,
9.0.3 in the event that such device is malfunctioning or otherwise not in proper
working order, the device is immediately repaired or replaced; and,
9.0.4 in the event that the water supply to the device cannot be shut down in order
to facilitate annual testing, a by-pass shall be installed around the device with a
suitable backflow prevention device installed in the by-pass to allow for annual
testing of both devices.
9.1 Every person who tests a backflow prevention device shall carry out such testing
in accordance with this By-law, the CSA Standard and all applicable legislation.
By-Law 09-73
9
9.2 Every person who tests a backflow prevention device shall:
9.2.1 provide a legible test report to the owner in respect of such test; and,
9.2.2 upon completing such test, complete and affix a test tag to the device or
immediately adjacent to the device on the piping connected thereto; and,
9.2.3 upon finding that such device is malfunctioning or otherwise not in proper
working order, immediately notify the owner of the property of such condition in
writing, and, in the case of a premise isolation device, also notify the Town
immediately verbally and also immediately in writing.
10. INSPECTIONS
10.0 The Town may, at any reasonable time, enter without advance notice onto any
property, building or structure to inspect for compliance with this By-law.
10.0.1 When carrying out an inspection pursuant to section 10.0 of this By-law, the
Town may:
(a) require the production for inspection of documents or effects relevant to the
inspection.
(b) inspect and remove documents or effects relevant to the inspection for the
purpose of making copies or extracts.
(c) require information from any person concerning a matter related to the
inspection.
(d) make examinations or take tests, samples or photographs necessary for the
purposes of the inspection.
10.1 Where an owner does not comply with any provision of this By-law, the Town
may:
10.1.1 Order the owner to comply with this By-law's requirements, and in so doing,
shall provide reasonable particulars of the owner's non-compliance and prescribe
the time period for compliance with such Order;
10.1.2 Shut off the water supply to the property or any portion thereof until such
time as all provisions of this By-law are met.
By-Law 09-73
10
11. GENERAL PROVISIONS
11.0 In addition to any other provisions of this By-law, the Town may at any time
order an owner to conduct tests, provide reports and undertake any other measures
required for the prevention of backflow or protection of a cross-connection.
11.1 Appendices "A" (Authorized Function List) & "B" (Backflow Prevention Device
Selection Guide) shall form part of this By-law.
READ A FIRST TIME THIS 21st day of September 2009.
READ A SECOND AND THIRD TIME AND FINALLY PASSED THIS day of , 2009
By-Law 09-73
11
Appendix "A"
To By-Law Number 09-73 of The Corporation of the Town of Grimsby
Authorized Function List
Item FUNCTION
LICENCED
PLUMBER WITH
TESTER'S
QUALIFICATIONS
* JOURNEYMAN
PLUMBER WITH
TESTER'S
QUALIFICATIONS
** APPRENTICE
PLUMBER WITH
TESTER'S
QUALIFICATIONS
FIRE SYSTEM
SPRINKLER FITTER
WITH A TESTER'S
QUALIFICATIONS
LAWN
IRRIGATION
SYSTEM
INSTALLER WITH
TESTER'S
QUALIFICATIONS
1
Carry Out Cross-
connection Control
Survey
✓
✓
2
Install, Relocate or
Replace I Backflow
Prevention Device
✓
✓
✓
3
Repair of Backflow
Prevention Device
✓
✓
✓
✓
4
Test Backf/ow
Prevention Device
✓
✓
✓
✓
5
Items 1,2, 3 & 4 above
in
Respect of Fire
Protection Systems
✓
✓
✓
✓
6
Items 2 (up to 1"), 3 & 4
above in Respect of
Lawn Sprinkler System
✓
✓
✓
✓
* Required to be employed by a Licenced Plumbing Contractor
** Required to be employed by a Licenced Plumbing Contractor
By-Law 09-73
12
APPENDIX "B"
to By-Law No. 09-73 of the Corporation of the Town of Grimsby
BACKFLOW PREVENTION DEVICE SELECTION GUIDE
INTERPRETATION
In addition to those terms defined in section 2.0 of By-law No. 09-73, the
following terms shall have the corresponding meanings for the purposes of this
Appendix:
"air gap (AG)" means the unobstructed vertical distance through air between the lowest
point of the water supply outlet and the flood level rim of the fixture or
device into which the outlet discharges;
"back siphonage" means backflow caused by pressure below atmospheric in the supply
system;
"double check valve assembly (DCVA)" means a backflow prevention device consisting
of two force-loaded, independently acting check valves, including tightly closing
resilient-seated shutoff valves located at each end of the assembly and fitted with
properly located resilient-seated test cocks. This device is designed for use under
continuous pressure;
"dual check valve {DuC) " means a backflow prevention device consisting of two
independently acting, force-loaded, soft-seated check valves in series. This device does
not have a relief port or test cocks. This device is designed for use under continuous
pressure;
"dual check valve with atmospheric port (DCAP), (DCAPC)" means a backflow
prevention device that consists of two independently acting check valves separated by
an intermediate chamber with an atmospheric port. A chamber pressure higher than the
supply pressure is required to open the port when there is a positive pressure on the
supply side. This device is designed for use under continuous pressure; (DCAPC) is
specifically designed for use in carbonated beverage dispensing machines;
"dual check valve with intermediate vent {DuCV)" means a backf/ow prevention device
that consists of two independently acting check valves biased to a normally closed
position. Between the check valves there is a relief port that is biased to a normally
open position. This device is designed for use under continuous pressure;
By-Law 09-73
13
"reduced pressure principle assembly (RP)" means a backflow prevention device that
consists of a mechanically independently acting, hydraulically dependent relief valve
located in a chamber between two independently operating, force-loaded check valves,
the intermediate chamber pressure always being lower than the supply pressure when
there is a positive pressure on the supply side. The unit includes properly located
resilient-seated test cocks and tightly closing resilient-seated shutoff valves at each end
of the assembly. This device is designed for use under continuous pressure;
"minor hazard" means any cross-connection or potential cross-connection that
constitutes only a nuisance, with no possibility of any health hazard;
"moderate hazard" means any minor hazard that has a low probability of
becoming a severe hazard;
"severe hazard" means any cross-connection or potential cross-connection
involving any substance that could be a danger to health;
"single check valve" (SCVAF) means a backflow preventer that consists of one force-
loaded, independently acting check valve, including resilient-seated shut-off valves
located at each end of the SCVAF backflow preventer and fitted with resilientseated
test cocks. SCVAF backflow preventers are designed for use under continuous
pressure on fire sprinkler and standpipe systems;
"vacuum breaker'' means a device that will prevent backflow when pressure in
the system upstream of the device falls below atmospheric pressure. Air is only
admitted downstream of the device;
"vacuum breaker, atmospheric type (AVB)" means a vacuum breaker designed to be
under pressure only when water is being drawn from the system and for
short, intermittent periods of time;
"vacuum breaker, laboratory faucet type (LFVB)" means a vacuum breaker consisting of
two independently acting check valves force-loaded or biased to a normally closed
position. Between the check valves there is a relief port that is force-loaded or biased to
a normally open position. When the laboratory faucet is off, the check valves are closed
and the port is open; when the faucet is on, the check valves are open and the port is
closed; and
"vacuum breaker, pressure type (PVB)" or "spill resistant pressure type (SRPVB)"
means an assembly containing an independently acting check valve force-loaded or
By-Law 09-73
14
biased, to a normally closed position, and an independently operating air inlet valve
force-loaded or biased to a normally open position and located on the discharge side of
the check valve. The assembly is equipped with properly located resilient-seated test
cocks and tightly closing resilient-seated shutoff valves located at each end of the
assembly. The device is designed for use under continuous pressure.
APPENDIX "B"
to By-Law No. 09- 73 of the Corporation of the Town of Grimsby
Selection Guide for Backflow Preventers
Degree of Hazard
Type of
Device
CSA
Standard
Designation
Minor
Moderate
Severe
Device
Under
Continuous
Pressure
Air gap
✓
✓
✓
No
AVB
B64.1.1
✓
✓
✓*
No
DCAP
B64.3
✓
✓†
--
Yes
DCAPC
B64.3.1
✓
✓
--
Yes
DCVA
B64.5
✓
✓
--
Yes
DuC
B64.6
✓
--
--
Yes
DuCV
B64.8
✓
✓†
--
Yes
HCDVB
B64.2.11.1
✓
✓†
✓*
No
HCVB
B64.2
✓
✓†
✓*
No
LFV8
B64.7
✓
✓†
✓*
No
PVB
B64.1.2
✓
✓
✓
Yes
RP
B64.4
✓
✓
✓
Yes
SRPVB
B64.1.3
✓
✓
✓
Yes
*When the recommended backflow preventer is used for this degree of hazard.
Zone protection with an RP backflow preventer or an air gap shall also be
required.
† When the recommended. device is used for this degree of hazard, zone or
area protection with a DCVA backflow preventer, RP backflow preventer, or an
air gap shall also be required.
By-Law 09-73
15
APPENDIX "B"
to By-Law No. 09-73 of the Corporation of the Town of Grimsby
BACKFLOW PREVENTION GUIDE TO DEGREE OF HAZARD
Type of Cross
Connection
Degree of Hazard
Type of Cross
Connection
Degree of Hazard
Agricultural
chemicals
(sprayers)
Severe
Garbage disposal
unit
Severe
Air compressor oil
cooler
Moderate
Garbage can
washer
Severe
Animal watering
Moderate
Heat Exchanger
Moderate to Severe
Aspirator (toxic)
Severe
Heating System
(copper/plastic: no
chemicals)
Minor
Aspirator (non-
toxic)
Moderate
Heating System (no
chemicals added}
Moderate
Autoclave
Severe
Heating System
(chemicals added)
Severe
Autopsy and
mortuary
equipment
Severe
Heating System
(single family
dwelling)
Moderate
Auxiliary water
supply
Severe
Hose bib sediment
faucet
Minor to Severe
Baptistery
Moderate
Hose bib, sediment
faucet,
connected to high
hazard
Severe
Basin
Moderate
Hose bib, sediment
faucet
(residential)
Minor to Moderate
Bathtub (all)
Moderate
Humidifier
Moderate
Bedpan washer
Moderate
Humidifier with
sump
Severe
Beverage
dispensing
equipment (no
carbonator)
Minor
Hydrotherapy bath
Severe
Beverage
dispensing
equipment (with
carbonator)
Minor
Ice Machine for
commercial
restaurant
Moderate to Severe
By-Law 09-73
16
Type of Cross
Connection
Degree of Hazard
Type of Cross
Connection
Degree of Hazard
Bidet
Moderate to Severe
Ice making
equipment for
sports arena
Severe
Bottle Washer
Moderate to Severe
industrial fluid
system
Severe
Bread Making
equipment
Minor to Moderate
irrigation system
(chemical injected)
Severe
Canopy washer
Severe
Irrigation system
(no chemical
added)
Moderate
Chemical Feed
Tank
Severe
Lab bench
equipment (toxic)
Severe
Chiller tank (no
chemical)
Moderate to Severe
Lab bench
equipment (non
toxic)
Minor
Chiller tank (with
chemical)
Severe
Laboratory
Severe
Chlorinator
Severe
Laboratory Faucet
Moderate to Severe
Clothes washer
(residential)
Moderate
laundry,
commercial
coin-operated
Moderate
Coffee machine
Minor
Laundry machine
commercial
Moderate
Condensate tank
(top feed)
Moderate
Laundry machine
residential
Minor
Condensate tank
Severe
Laundry tub faucet
with hose bib
connection
Moderate
Cooking Kettle
Minor
Lavatory
Moderate
Cooling Condenser
(solenoid upstream)
Minor
Lethal substance
Severe
Cooling Condenser
(solenoid
downstream)
Severe
Livestock
equipment
Severe
Cooling Tower
Severe
Mixing tee with
steam and water
Moderate
Deaerator (Top
Feed)
Moderate
Mop sink faucet
with hose bib
connection
Moderate
Deaerator (Bottom
Feed)
Severe
Mortuary or Morgue
Severe
By-Law 09-73
17
Type of Cross
Connection
Degree of Hazard
Type of Cross
Connection
Degree of Hazard
Degreasing
equipment system
Severe
Non-portable water
Severe
Deionized water
Severe
Optician or
Ophthalmology
equipment
Minor to Moderate
Dental Vacuum
pump
Severe
Photo lab sink
Severe
Dental Cuspidor
(with internal air
gap)
Minor
Pipette washer
Severe
Dental Cuspidor
(no air gap)
Severe
Piping to chemical
dispensers
Minor to Severe
Dental Delivery
System
Minor
Plating tank
Severe
Detergent
dispenser
Severe
Potato peeler
Moderate
Dipper well in ice-
cream parlour or
restaurant
Moderate
Poultry barn
Severe
Dish rinse unit with
flex hose
Moderate
Pressure washer
(no aspirator)
Minor
Dishwasher
(commercial)
Moderate
Pressure washer
(with aspirator)
Severe
Dishwasher
(residential)
Minor to Moderate
Private fire hydrant
Moderate
Distiller
Minor
Private water
source
Severe
Dockside Marine
Facility
Severe
Pump pr1mer line
(toxic)
Severe
Dry sprinkler or
standpipe system
Moderate
Pump primer line
(non-toxic)
Moderate
Fire Hydrant
Moderate
Radiator flushing
equipment
Severe
Flexible shower
head with hose
Minor to Severe
Restricted area
Severe
By-Law 09-73
18
Type of Cross
Connection
Degree of Hazard
Type of Cross
Connection
Degree of Hazard
Floor drain with
flushing rim
Severe
Reverse osmosis
Minor
Flush Tank
Moderate
Reverse osmosis
with backwashing
Moderate
Flushing equipment
device
Severe
Reverse osmosis
with chemical
cleaning
Severe
Flushometer
Severe
Serrated faucet
Severe
Fountain,
ornamental
Moderate to Severe
Sewage ejector
Severe
Fountain,
ornamental
(chemical added
Severe
Sewage pump
Severe
Fume hood
Severe
Shampoo sink
Moderate
Sizing vat
Severe
Wash rack
Severe
Solar energy unit
Severe
Wash tank
Moderate
Solution tank
Severe
Wash tank (toxic)
Severe
Spa or Hot Tub
Moderate
Water Closet
(tank/type)(N/A if
constructed after
1995)
Moderate
Specimen Tank
Severe
Water closet
(flushometer type)
Moderate
Steam table
Minor to Moderate
Water hauling
equipment (non-
toxic)
Moderate
Steam generator
Moderate
Water hauling
equipment (toxic)
Severe
Steam cleaner
Moderate
Water softener
(commercial)
Minor
Sterilizer
(condensate
cooling only)
Moderate
Water softener
drain
Severe
Still
Minor
Wok table (for
oriental cooking
with submerged
inlet)
Moderate
By-Law 09-73
19
Type of Cross
Connection
Degree of Hazard
Type of Cross
Connection
Degree of Hazard
Swimming Pool
(residential)
Minor
Swimming pool
(other than
residential)
Moderate
Swimming Pool
(direct connect)
Moderate
Swimming pool
makeup tank
Moderate
Teeth cleaning
equipment
(veterinary type)
Moderate
Trap primer
Sever
Vending machine
with no carbonators
Minor
Emergency eyewash/Shower - this equipment must be installed upstream of all zone
and source isolation
Fire Protection Systems.: General Conditions
Antifreeze solutions must be water solutions of pure glycerin (C.P. or U.S.P., 96.5%
grade) OR propylene glycol conforming to action 3-5.2.1 of NFPA-13, 1994 Edition.
These are best described as food-grade chemicals.
Antifreeze solutions must be tested to verify compliance with above conditions. Any
other antifreeze solution is NOT permitted and must be replaced
Expansion chambers shall be of an appropriate size to compensate for thermal
expansion of antifreeze solution.
An adequate amount of piping before or after the location of any backflow prevention
device shall be Increased In size to compensate for the pressure loss created by the
device being installed. The flows are to be in accordance with NFPA-13 for the
appropriate hazard classification In the area downstream of the backflow prevention
device.
By-Law 09-73
20
Table 7.6.2.4
Backflow Prevention Devices on fire Sprinkler and Standpipe Systems
Form Part of Sentences 7.6.2.4.(2)
Column 1
Column 2
Column 3
Column 4
Column 5
Column 6
CSA
Standard
Number
Type of
Device
System made with
Portable Water System
Materials
System Not made with
Portable Water System
Materials
Minor
Hazard (2)
Residential
Partial
Flow-
Through
System
Minor
Hazard (2)
Class 1
System
Moderate
Hazard (2)
Class 1,2,3
and 6
Severe
Hazard (2)
Any Class
of System
in which
Antifreeze
or Other
Additives
are used
B64.6.1
DuC
P
NP
NP
NP
B64.9
SCVA
P
P
NP
NP
B 64.5.1
DCVA
P
P
P
NP
B64.4.1
RP
P
P
P
P
Notes to Table 7.6.2.4.:
P -Permitted
NP -Not Permitted
(1)-The product la only permitted for use on fire sprinkler and standpipe
systems.
(2)-Minor Hazard, Moderate Hazard and Severe Hazard have the same meaning
as Indicated in Can/CSA-S64.10 -Manual for the Selection and installation of
Backflow Prevention Devices"".
APPENDIX 11 811
to By-Law No. 09- 73 of the Corporation of the Town of Grimsby
BACKFLOW PREVENTION GUIDE TO DEGREE OF HAZARD -PREMISE
ISOLATION
Type of Building
Degree of
Hazard
Type of Building
Degree of Hazard
Abattoir (slaughter house)
Severe
Paint
manufacturing plant
Severe
Airport
Moderate
Penitentiary
Moderate
Animal feed lot
Moderate
to Severe
Petroleum
processing or
storage facility
Severe
By-Law 09-73
21
Animal stock yard
Moderate
to Severe
Pharmaceutical
manufacturing
facility
Severe
Apartment building (within-
the scope of Part 3 of the
Ontario Building Code·)
Moderate
to Severe
Photo processing
facility
Severe
Aquaculture farm
Severe
Plant using
radioactive material
Severe
Aquarium public}
Severe
Plastic
manufacturing plant
Severe
Arena
Moderate
Platina shop
Severe
Asphalt plant
Severe
Poultry Shop
Severe
Auto body shop
Severe
Power generating
facility
Severe
Auto dealership
Moderate
Premise where
access prohibited
Severe
Automotive Plant
Severe
Printing plant
Severe
Automotive repair shoo
Severe
Pulp and/or paper
plant
Severe
Beverage processing plant
Severe
Radiator shop
Severe
Blood clinic
Severe
Recycling facility
Severe
Camp site
Moderate
Refinery, petroleum
Processing
Severe
Camp site with RV hookups
or dump station
Severe
Rendering facility
Severe
Carwash
Severe
Research building
Severe
Church
Moderate
Residential
premises-multi-
tenant
Moderate
College
Moderate
Restaurant
Moderate
Commercial premises
Moderate
to Severe
School
Moderate
Concrete plant
Severe
Sewage dump
station
Severe
Dental office
Moderate
Sewage treatment
plant
Severe
Dental surgery facility
Severe
Steam boiler plant
Severe
Dockside marine facility
Severe
Steel
manufacturing plant
Severe
Dry cleaning plant
Severe
Storage
Warehouse
Moderate
By-Law 09-73
22
Dry cleaning facility (no dry-
cleaning process on
premise)
Moderate
Swimming pool
facility
Moderate
Duplex housing with shared
service
Minor
Technical institute
Moderate
Dye plant
Severe
Townhouse (shared
service)
Minor
Exhibition ground
Severe
Track-side facilities
for trains
Severe
Farm
Moderate
to Severe
University
Moderate to Severe
Film processing faculty
Severe
Veterinary clinic
Moderate to Severe
Fire Service main
connected to more than one
of the following different
sources of supply:
(I)
City water supply
system
(II)
a private water
supply system or
(III)
a source of non-
portable water
Moderate
to Severe
Veterinary clinic
(special equipment)
Severe
Fire station
Moderate
to Severe
Waste disposal
Severe
Fish farm or Hatchery
Severe
Waste water facility
Severe
Food processing plant
Severe
Waste water pump
station
Severe
Fuel dispensing facility
Moderate
Waste Water
Treatment Plant
Severe
Funeral Home
Moderate
to Severe
Water filling station
Severe
Garbage transfer facility
Severe
Water park
Moderate
Golf course
Moderate
to Severe
Water treatment
plant
Severe
Grocer
Moderate
Water treatment
pump station
Severe
Hair salon
Moderate
Zoo
Severe
Hospital
Severe
Hotel
Moderate
Industrial and Institutional
Moderate
to Severe
Kennel
Moderate
Laboratory
Severe
Laundry (commercial)
Severe
By-Law 09-73
23
Laundry) commercial coln-
operated)
Moderate
Mall - multi-tenant
Moderate
Manufacturing Plant (not
specified)
Moderate
Marina (pleasure boat)
Moderate
to Severe
Meat Packing plant
Severe
Medical clinic (non surgical)
Moderate
Medical clinic (surgical)
Severe
Milk processing plant
Severe
Mining facility
Severe
Mobile home park
Moderate
Mortuary or morgue
Severe
Motel
Moderate
Motor cycle repair facility
Severe
Nursing Home
Moderate
Office Building
Moderate
Oil Refinerv
Severe