jswizzle3737/ontario_laws_and_regs huggingface dataset:
Notes to Table 7.4.10.9.:
7.5.8.3. Branch Vents, Headers, Continuous Vents and Circuit Vents (1) Branch vents, headers, circuit vents and continuous vents shall be sized in accordance with Table 7.5.8.3., unless they are individual vents or dual vents. Table 7.5.8.3.   Sizing of Branch Vents, Headers, Continuous Vents and Circuit Vents Forming Part of Article 7.5.8.3.  Item   Column 1   Column 2   Column 3   Column 4   Column 5   Column 6   Column 7   Column 8   Column 9 

      Total Hydraulic Load Served by Vent, fixture units   Size of Vent Pipe, in.                         

          1 ¼   1 ½   2   3   4   5   6   8 

          Maximum Length of Vent Pipe, m(1)(2)                 

  1.   2   9   NL   NL   NL   NL   NL   NL   NL 

  2.   8   9   30   61   NL   NL   NL   NL   NL 

  3.   20   7.5   15   46   NL   NL   NL   NL   NL 

  4.   24   4.5   9   30   NL   NL   NL   NL   NL 

  5.   42   NP   9   30   NL   NL   NL   NL   NL 

  6.   60   NP   4.5   15   120   NL   NL   NL   NL 

  7.   100   NP   NP   11   79   305   NL   NL   NL 

  8.   200   NP   NP   9   76   275   NL   NL   NL 

  9.   500   NP   NP   6   55   215   NL   NL   NL 

  10.   1 100   NP   NP   NP   15   61   215   NL   NL 

  11.   1 900   NP   NP   NP   6   21   61   215   NL 

  12.   2 200   NP   NP   NP   NP   9   27   105   335 

  13.   3 600   NP   NP   NP   NP   7.5   18   76   245 

  14.   5 600   NP   NP   NP   NP   NP   7.5   18   76
Notes to Table 7.5.8.4.:
7.5.8.5. Lengths for other Vent Pipes (1) When sizing an additional circuit vent, offset relief vent, relief vent,
yoke vent and the vent pipe for an interceptor, dilution tank, sanitary sewage tank or sump, or manhole, length is not taken into consideration. 7.5.9. Air Admittance Valves
Notes to Table 7.5.8.4.:
7.5.9.1. Air Admittance Valve as a Vent Terminal (1) Individual vents
and dual vents are permitted to terminate with a connection to an air admittance valve as provided in Articles 7.5.9.2. and 7.5.9.3.
Notes to Table 7.5.8.4.:
7.5.9.2. Air Admittance Valves (1) Air admittance valves shall only be used to vent, (a)  fixtures in
buildings undergoing renovation, and (b) installations where connection to a vent may not be practical. (2) The air admittance valves shall be located, (a) above the flood level rim of the fixture it serves, (b) within the maximum developed length permitted for the vent, (c) not less than 150 mm above insulation materials, and (d) installed in a location not subject to back pressure. (3) Air admittance valves shall, (a) only vent fixtures
located on the same storey, and (b) be connected to the horizontal fixture drain.
Notes to Table 7.5.8.4.:
7.5.9.3. Installation Conditions (1) Air admittance valves shall not be installed in supply or return air plenums, or in locations where they may be exposed to freezing temperatures. (2) Air admittance valves shall be installed in accordance with the manufacturer’s installation instructions. (3) Air admittance valves shall be rated for the size of vent pipe to which they are connected. (4) Installed air admittance valves shall be, (a)  accessible, and (b) located in a space that allows air to enter the valve. (5) Every drainage system shall have one vent that terminates to open air
in conformance with Sentence 7.5.6.5.(1). Section 7.6. Potable Water Systems 7.6.1. Arrangement of Piping
Notes to Table 7.5.8.4.:
7.6.1.1. Design (1) Every fixture supplied with separate hot and cold water controls shall have the hot water control on the left and the cold on the right. (2) Where hot and cold water are mixed and the temperature is regulated by a single, unmarked, manual control, a movement to the left shall increase the temperature and a movement to the right shall decrease the temperature. (3) In a hot water distribution system of a developed length of more than 30 m or supplying more than 4 storeys, the water temperature shall be maintained by, (a) recirculation, or (b) a self-regulating heat tracing system.
Notes to Table 7.5.8.4.:
7.6.1.2. Drainage (1) A water distribution system shall be installed so that the system can be drained or blown out with air and outlets for this purpose shall be provided.
Notes to Table 7.5.8.4.:
7.6.1.3. Control and Shut-off Valves (1) A building control valve shall be provided, (a) on every water service pipe at the location where the water service pipe enters the building, or (b) on the water distribution system at a location immediately downstream of the point of entry treatment unit, where the building is served by a point of entry treatment unit located in the building. (2) Except as provided in Sentence (3), a drain port shall be provided on the water distribution system immediately downstream of the building control valve required by Sentence (1) and if there is a meter, the drain port shall be installed immediately downstream of the meter on the water distribution system. (3) Where the building control valve
required by Sentence (1) is of 1 in. trade size or smaller, the drain port may be an integral part of the building control valve in the form of a stop and waste valve and the drain port shall be located on the water distribution system
side of the stop and waste valve. (4) Every pipe that is supplied with water from a tank on the property that is a gravity water tank or a tank of a drinking water system shall be provided with a shut-off valve located close to the tank. (5) Where the water supply is to be metered, the installation of the meter, including the piping that is part of the meter installation and the valving arrangement for the meter installation, shall be according to the water purveyor’s requirements. (6) For the purpose of identifying the pipe material where plastic water pipe is used underground for a service pipe, the end of the pipe inside the building shall be brought above ground for a distance not less than 300 mm and not greater than 450 mm.
Notes to Table 7.5.8.4.:
7.6.1.4. Shut-off Valves (1) Except for a house containing not more than one dwelling unit, every riser shall be provided with a shut-off valve at the source of supply.
Notes to Table 7.5.8.4.:
7.6.1.5. Water Closets (1) Every water closet shall be provided with a shut-off valve on its water supply pipe.
Notes to Table 7.5.8.4.:
7.6.1.6. Suites (1) Shut-off valves shall be installed in every suite
in a building of residential occupancy as may be necessary to ensure that when the supply to one suite is shut off the supply to the remainder of the building is not interrupted.
Notes to Table 7.5.8.4.:
7.6.1.7. Public Washrooms (1) The water supply to each fixture in a washroom for public use shall be individually valved and each valve shall be accessible.
Notes to Table 7.5.8.4.:
7.6.1.8. Tanks (1) Every water pipe that supplies a hot water tank, pressure vessel, plumbing appliance or water using device shall be provided with a shut-off valve located close to the tank, pressure vessel, plumbing appliance or water using device.
Notes to Table 7.5.8.4.:
7.6.1.9. Protection for Exterior Water Supply (1) Every pipe that passes through an exterior wall to supply water to the exterior of the building shall be provided with, (a) a frost-proof hydrant with a separate shut-off valve located inside the building, or (b) a stop-and-waste cock located inside the building and close to the wall.
Notes to Table 7.5.8.4.:
7.6.1.10. Check Valves (1) A check valve shall be installed at the building end of the water service pipe where the pipe is made of plastic that is suitable for cold water use only.
Notes to Table 7.5.8.4.:
7.6.1.11. Flushing Devices (1) Every flushing device that serves a water closet or one or more urinals shall have sufficient capacity and be adjusted to deliver at each operation a volume of water that will thoroughly flush the fixture or fixtures that it serves. (2) Where a manually operated flushing device is installed, it shall serve only one fixture.
Notes to Table 7.5.8.4.:
7.6.1.12. Relief Valves (1) Every pressure vessel that is part of a plumbing system or connected to a plumbing system shall be equipped with a pressure relief valve designed to open when the water pressure in the tank reaches the rated working pressure of the tank, and so located that the pressure in the tank shall not exceed 1 100 kPa or one-half the maximum test pressure sustained by the tank, whichever is the lesser. (2) Every hot water tank of a storage-type service water heater shall be equipped with a temperature relief valve with a temperature sensing element, (a) located within the top 150 mm of the tank, and (b) designed to open and discharge sufficient water from the tank to keep the temperature of the water in the tank from exceeding 99°C under all operating conditions. (3) A pressure relief valve and temperature relief valve may be combined where Sentences (1) and (2) are complied with. (4) Every indirect service water heater
shall be equipped with, (a) a pressure relief valve, and (b) a temperature relief valve on every storage tank that forms part of the system. (5) Every pipe that conveys water from a temperature relief, pressure relief, or a combined temperature and pressure relief valve shall, (a) be of a size
at least equal to the size of the outlet of the valve, (b) be rigid, slope downward from the valve, and, (i) terminate with an indirect connection above a floor drain, sump or other safe location, with an air break of not more than 300 mm, or (ii) terminate at a distance not less than 150 mm and not more than 300 mm from a floor and discharge vertically down, (c) have no thread at its outlet, and (d) be capable of operating at a temperature of not less than 99°C. (6) The temperature relief valve required in Clause (4)(b) shall, (a) have a temperature sensing element located within the top 150 mm of the tank, and (b) be designed to open and discharge sufficient water to keep the temperature of the water in the tank from exceeding 99°C under all operating conditions. (7) No shut-off valve shall be installed on the pipe between any tank and the relief valves or on the discharge lines from such relief valves.
Notes to Table 7.5.8.4.:
7.6.1.13. Solar Domestic Hot Water Systems (1) Except as provided in Sentence (2), a system for solar heating of potable water shall be installed in accordance with good engineering practice. (2) Packaged systems for solar heating of potable water in residential occupancies shall be installed in conformance with CAN/CSA-F383, “Installation of Packaged Solar Domestic Hot Water Systems”.
Notes to Table 7.5.8.4.:
7.6.1.14. Water Hammer (1) Provision shall be made to protect the water distribution system from the adverse effects of water hammer.
Notes to Table 7.5.8.4.:
7.6.1.15. Mobile Home Water Service (1) A water service pipe intended to serve a mobile home shall, (a) be not less than ¾ in. in size, (b) be terminated above ground, and (c) be provided with, (i) a tamperproof terminal connection that is capable of being repeatedly connected, disconnected and sealed, (ii) a protective concrete pad, (iii) a means to protect it from frost heave, and (iv) a curb stop and a means of draining that part of the pipe located above the frost line when not in use.
Notes to Table 7.5.8.4.:
7.6.1.16. Thermal Expansion (1) Protection against thermal expansion shall be required when a check valve is required by Article 7.6.1.10., a backflow preventer is required by Article 7.6.2.2., or a pressure reducing valve is required by Article 7.6.3.3. 7.6.2. Protection from Contamination
Notes to Table 7.5.8.4.:
7.6.2.1. Connection of Systems (1) Connections to potable water systems shall be designed and installed so that non-potable water or substances that may render the water non-potable cannot enter the system. (2) No connection shall be made between a potable
water system supplied with water from a drinking water system and any other potable
water system without the consent of the water purveyor.
Notes to Table 7.5.8.4.:
7.6.2.2. Back-Siphonage (1) Every potable water system that supplies a fixture or tank that is not subject to pressures above atmospheric shall be protected against back-siphonage by a backflow preventer. (2) Where a potable water supply is connected to a boiler, tank, cooling jacket, lawn sprinkler system or other device where a non-potable fluid may be under pressure that is above atmospheric or the water outlet may be submerged in the non-potable fluid, the water supply shall be protected against backflow by a backflow preventer. (3) Where a hose bibb is installed outside a building, inside a garage, or where there is an identifiable risk of contamination, the potable water system shall be protected against backflow by a backflow preventer.
Notes to Table 7.5.8.4.:
7.6.2.3. Protection from Backflow (1) Except as provided in Sentence (3) and Articles 7.6.2.4. to 7.6.2.6., where a backflow preventer is required by this Subsection, the backflow preventer shall be selected, installed and tested in conformance with CSA B64.10, “Selection and Installation of Backflow Preventers”. (2) Backflow preventers shall be provided in conformance with Sentence 7.2.10.10.(1). (3) Tank type water closet valves shall be provided with a back-siphonage preventer in conformance with Sentence 7.2.10.10.(2).
NP – Not Permitted
7.6.2.5. Backflow from Buildings with a Solar Domestic Hot Water System (1) Except as permitted by Sentence (2) and as provided in Sentences (3) and (4), a potable water system shall be protected against backflow where the heat transfer loop of a solar domestic hot water system is directly connected to the potable water system. (2) Where the heat transfer loop of the solar domestic hot water system consists of direct flow-through of potable water only, protection against backflow is not required. (3) A potable water system that is directly connected to the heat transfer loop of a solar domestic hot water system that serves a residential occupancy within the scope of Part 9 shall be provided with a backflow preventer selected in accordance with CAN/CSA-F379.1, “Packaged Solar Domestic Hot Water Systems (Liquid-to-Liquid Heat Transfer) for All-Season Use”. (4) Where a solar domestic hot water system includes a single wall heat exchanger and contains only a relatively harmless heat transfer fluid as described in CAN/CSA-F379.1, “Packaged Solar Domestic Hot Water Systems (Liquid-to-Liquid Heat Transfer) for All-Season Use”, the backflow prevention required in Sentence (1) is permitted to be a dual check valve backflow preventer conforming to CSA B64.3, “Dual Check Valve Backflow Preventers with Atmospheric Port (DCAP)”.
NP – Not Permitted
7.6.2.6. Premise Isolation (1) Buildings or facilities where a moderate hazard or severe hazard may be caused by backflow shall be provided with premise isolation of the potable water system by the installation of a backflow preventer selected in accordance with Clauses 5.3.4.2.(b) and (c) of CSA B64.10, “Selection and Installation of Backflow Preventers”. (2) Buildings of residential occupancy within the scope of Part 9 are not required to be isolated unless they have access to an auxiliary water supply. (3) Except as provided in Sentence (1), where no direct connection exists between the auxiliary water supply and the potable water system, premise isolation shall be provided by a dual check valve backflow preventer conforming to CSA B64.6, “Dual Check Valve (DuC) Backflow Preventers”.
NP – Not Permitted
7.6.2.7. Reserved
NP – Not Permitted
7.6.2.8. Cleaning of Systems (1) A newly installed part of a potable water system shall be cleaned and then flushed with potable
water before the system is put into operation.
NP – Not Permitted
7.6.2.9. Air Gap (1) An air gap shall not be located in a noxious environment. (2) Every air gap shall be not less than 25 mm high and at least twice the diameter of the opening of the water supply outlet in height.
NP – Not Permitted
7.6.2.10. Vacuum Breakers and Flood Levels (1) Where the critical level is not marked on an atmospheric vacuum breaker, pressure vacuum breaker or spill-resistant pressure vacuum breaker, the critical level
shall be taken as the lowest point on the device. (2) Where an atmospheric vacuum breaker is installed, it shall be located on the downstream side of the fixture control valve or faucet so that it will be subject to water supply pressure, (a) only when the fixture control valve or faucet is open, and (b) for periods of use not to exceed 12 h continuous. (3) An atmospheric vacuum breaker shall be installed so that the critical level is at least the distance specified by the manufacturer at which the device will operate safely but not less than 25 mm above, (a) the flood level rim of a fixture or tank, or (b) the highest point open to atmosphere in an irrigation system. (4) A pressure vacuum breaker or spill-resistant pressure vacuum breaker shall be installed with its critical level at least 300 mm above, (a) the flood level rim of a fixture or tank, or (b) the highest point open to atmosphere in an irrigation system. 7.6.3. Size and Capacity of Pipes
NP – Not Permitted
7.6.3.1. Design, Construction and Installation (1) Every water distribution system shall be designed to provide peak demand flow when the flow pressures at the supply openings conform to the plumbing supply fitting manufacturer’s specifications. (2) A potable water system shall be designed, constructed and installed to conform to good engineering practice appropriate to the circumstances, such as that described in the ASHRAE Handbooks and ASPE Data Books. (3) Every pipe that supplies a fixture shall have a capacity that will produce a flow in the fixture
that will flush the fixture and keep it in a sanitary condition.
Notes to Table 7.6.3.2.C.:
7.6.3.3. Static Pressure (1) Where the static pressure at any fixture
may exceed 550 kPa, a pressure reducing valve conforming to Article 7.2.10.12. shall be installed to limit the maximum static pressure at the fixture to 550 kPa.
Notes to Table 7.6.3.2.C.:
7.6.3.4. Size (1) Every water service pipe shall be sized according to the peak demand flow but shall not be less than ¾ in. in size. (2) Except as permitted in Sentence (3), the size
of a supply pipe that serves a fixture or device shall conform to Table 7.6.3.2.A. (3) For fixtures listed in Table 7.6.3.2.A that have a permitted supply pipe size of ⅜ in., a connector not more than 750 mm long and not less than 6.3 mm inside diameter may be used to supply water to the fixture
or device. (4) No water system between the point of connection with the water service pipe or the water meter and the first branch that supplies a water heater that serves more than one fixture shall be less than ¾ in. in size. (5) Where both hot and cold water is supplied to fixtures in residential buildings containing more than one dwelling unit, the water system
may be sized in accordance with Table 7.6.3.4. provided, (a) the hydraulic loads for maximum separate demands on water distribution system
piping are not less than 100% of the total hydraulic load of the fixture units given in Tables 7.6.3.2.A., 7.6.3.2.B., 7.6.3.2.C. and 7.6.3.2.D. for private use, (b) the minimum water pressure at the entry to the building is 200 kPa, and (c) the total maximum length of the water system is 90 m. Table 7.6.3.4.   Water Pipe Sizing for Buildings Containing More Than One Dwelling Unit Forming Part of Sentence 7.6.3.4.(5) Item   Column 1   Column 2   Column 3 

      Size of Water Pipe, in.   Water Velocity m/s(1) 

          2.4   1.5 

          Hydraulic Load, fixture units 

  1.   1/2   7   4 

  2.   3/4   16   9 

  3.   1   31   18 

  4.   1-1/4   57   30
Notes to Table 7.6.3.4.:
7.6.3.5. Velocity (1) The maximum permitted water velocities shall be those recommended by the pipe and fitting manufacturer. 7.6.4. Water Efficiency
Notes to Table 7.6.3.4.:
7.6.4.1. Water Supply Fittings (1) The flow rates of fittings that supply water to a fixture shall not exceed the maximum flow rates at the test pressures listed for that fitting in Table 7.6.4.1. Table 7.6.4.1.   Maximum Flow Rates for Water Supply Fittings Forming Part of Sentence 7.6.4.1.(1) Item   Column 1 Fitting   Column 2 Maximum Flow, L/min   Column 3 Test Pressure, kPa 

  1.   Lavatory Faucets in Residential Occupancy   5.7   413 

  2.   Lavatory Faucets in Other Occupancies   1.9   413 

  3.   Kitchen Faucet   8.35   413 

  4.   Shower Heads in Residential Occupancy   7.6   550 

  5.   Shower Heads in Other Occupancies   9.5   550 (2) Sentence (1) does not apply to a fixture
located in a heritage building. (3) Each lavatory in a washroom with fixtures for public use shall be equipped with a device capable of automatically shutting off the flow of water when the lavatory is not in use. (4) An automatic compensating valve serving an individual shower head shall have a manufacturer’s minimum-rated water flow rate equal to or less than the shower head it serves. (5) Where multiple shower heads installed in a public showering facility are served by one temperature control, each shower head shall be equipped with a device capable of automatically shutting off the flow of water when the shower head is not in use.
Notes to Table 7.6.3.4.:
7.6.4.2. Plumbing Fixtures (1) Water closets and urinals shall be certified to CAN/CSA-B45.0, “General Requirements for Plumbing Fixtures”. (2) Except as provided in Sentence (3), the flush cycle for each fixture
that is a water closet or urinal shall not exceed the maximum water consumption per flush cycle listed for that fixture in Table 7.6.4.2.A. Table 7.6.4.2.A.   Maximum Water Consumption per Flush Cycle for Sanitary Fixtures Forming Part of Sentence 7.6.4.2.(2) Item   Column 1 Fixture   Column 2 Maximum Water Consumption per Flush Cycle, LPF 

  1.   Water Closet (Tank Type)   6.0 

  2.   Water Closet (Direct Flush)   6.0 

  3.   Urinal (Tank Type)   1.9 

  4.   Urinal (Direct Flush)   1.9 (1) Revoked: O. Reg. 88/19, s. 180 (1). (3) In buildings classified as Group C occupancy, the flush cycle for each fixture
that is a water closet or urinal shall not exceed the maximum water consumption per flush cycle listed for that fixture in Table 7.6.4.2.B. Table 7.6.4.2.B.   Maximum Water Consumption per Flush Cycle for Sanitary Fixtures in a Group C Occupancy Forming Part of Sentence 7.6.4.2.(3) Item   Column 1 Fixture   Column 2 Maximum Water Consumption per Flush Cycle, LPF 

  1.   Water Closet (Tank Type)   4.8(1) 

  2.   Water Closet (Direct Flush)   4.8 

  3.   Urinal (Tank Type)   1.9 

  4.   Urinal (Direct Flush)   1.9
Notes to Table 7.6.4.2.B.:
7.6.5.1. Maximum Temperature of Hot Water (1) Except as provided in Sentences (2) and 7.6.5.3.(1), the maximum temperature of hot water supplied by fittings to fixtures in a residential occupancy shall not exceed 49°C. (2) Sentence (1) does not apply to hot water supplied to installed dishwashers or clothes washers.
Notes to Table 7.6.4.2.B.:
7.6.5.2. Showers (1) Except as provided for in Sentences (2) and (3), all valves supplying fixed location shower heads, shall be individually pressure-balanced or thermostatic-mixing valves, conforming to ASME A112.18.1 / CSA B125.1, “Plumbing Supply Fittings”. (2) An individually pressure-balanced or thermostatic-mixing valve is not required for shower heads having a single tempered water supply that is controlled by an automatic compensating valve conforming to CSA B125.3, “Plumbing Fittings”. (3) Deck-mounted, hand-held, flexible-hose spray attachments are exempt from the thermal shock requirements of Sentences (1) and (4). (4) Pressure-balanced, thermostatic-mixing or combination pressure-balanced and thermostatic-mixing type valves shall be, (a) capable of limiting thermal shock, and (b) designed so that the outlet temperature does not exceed 49°C or equipped with high-limit stops which shall be adjusted to a maximum hot water setting of 49°C.
Notes to Table 7.6.4.2.B.:
7.6.5.3. Temperature Control Devices (1) A water distribution system supplying hot water to any bathtub, shower or hand basin that is accessible to a patient or resident in a Group B, Division 2 or 3 occupancy or a resident of a group home, home for special care or residence for adults with developmental disabilities shall have one or more temperature gauges and control devices that are, (a) accessible only to supervisory staff, and (b) capable of being adjusted to ensure that the temperature of the water supplied to the fixtures
does not exceed 49°C. Section 7.7. Non-Potable Water Systems 7.7.1. Connection
Notes to Table 7.6.4.2.B.:
7.7.1.1. Non-Potable Connection (1) Except as permitted by Sentences (2) and (3), a non-potable water system shall not be connected to a potable water system. (2) Make-up water may be supplied to the non-potable water system by, (a) a reduced pressure backflow preventer, or (b) an air gap. (3) Where a clothes washer is supplied by a rainwater
system and a potable water system, the potable water system shall be protected by dual check valve backflow preventers conforming to CSA B64.6, “Dual Check Valve (DuC) Backflow Preventers” for, (a) area isolation, and (b) premise isolation. 7.7.2. Identification
Notes to Table 7.6.4.2.B.:
7.7.2.1. Markings Required (1) Non-potable water piping shall be identified by markings that are permanent, distinct and easily recognized. (2) Non-potable water system for re-use purposes shall be marked in accordance with Section 12 of CAN/CSA-B128.1, “Design and Installation of Non-Potable Water Systems”. (3) A sign containing the words Non-Potable Water, Do Not Drink
shall be in letters at least 25 mm high with a 5 mm stroke and posted immediately above a fixture that is permitted to receive non-potable water. 7.7.3. Location
Notes to Table 7.6.4.2.B.:
7.7.3.1. Pipes (1) Non-potable water piping shall not be located, (a) where food is prepared in a food processing plant, (b) above food-handling equipment, (c) above a non-pressurized potable water tank, or (d) above a cover of a pressurized potable water tank.
Notes to Table 7.6.4.2.B.:
7.7.3.2. Outlets (1) Except as permitted in Sentence 7.1.5.3.(3), an outlet from a non-potable water system shall not be located where it can discharge into, (a) a sink or lavatory, (b) a fixture
into which an outlet from a potable water system is discharged, or (c) a fixture
that is used for a purpose related to the preparation, handling or dispensing of food, drink or products that are intended for human consumption. 7.7.4. Non-Potable Water Systems for Re-use Purposes
Notes to Table 7.6.4.2.B.:
7.7.4.1. Conformance to Standards (1) Non-potable water systems for re-use purposes shall be designed, constructed and installed to conform to good engineering practice appropriate to the circumstances such as described in, (a) the ASHRAE Handbooks, (b) ASPE Data Books, or (c) CAN/CSA-B128.1, “Design and Installation of Non-Potable Water Systems”. O. Reg. 332/12, Division B, Part 7; O. Reg. 361/13, ss. 39-46; O. Reg. 191/14, ss. 64-89; O. Reg. 139/17, ss. 54-56; O. Reg. 88/19, s. 145-181. Part 8   Sewage Systems Section   8.1.   General 

      8.1.1.   Scope 

      8.1.2.   Application 

      8.1.3.   Limitations 

            

  Section   8.2.    Design Standards 

      8.2.1.   General Requirements 

      8.2.2.   Treatment and Holding Tanks 

            

  Section   8.3.   Class 1 Sewage Systems 

      8.3.1.   General Requirements 

      8.3.2.   Superstructure Requirements 

      8.3.3.   Earth Pit Privy 

      8.3.4.   Privy Vaults and Pail Privy 

      8.3.5.   Portable Privy 

            

  Section   8.4.   Class 2 Sewage Systems 

      8.4.1.   General Requirements 

      8.4.2.   Design and Construction Requirements 

            

  Section   8.5.   Class 3 Sewage Systems 

      8.5.1.   General Requirements 

      8.5.2.   Design and Construction Requirements 

            

  Section   8.6.   Class 4 Sewage Systems 

      8.6.1.   General Requirements 

      8.6.2.   Treatment Units 

            

  Section   8.7.   Leaching Beds 

      8.7.1.   General Requirements 

      8.7.2.   Design and Construction Requirements 

      8.7.3.   Absorption Trench Construction 

      8.7.4.   Fill Based Absorption Trenches 

      8.7.5.   Filter Beds 

      8.7.6.   Shallow Buried Trench 

      8.7.7.   Type A Dispersal Beds 

      8.7.8.   Type B Dispersal Beds 

            

  Section   8.8.   Class 5 Sewage Systems 

      8.8.1.   Application 

      8.8.2.   General Requirements 

            

  Section   8.9.   Operation and Maintenance 

      8.9.1.   General 

      8.9.2.   Operation 

      8.9.3.   Maintenance Section 8.1. General 8.1.1. Scope
Notes to Table 7.6.4.2.B.:
8.1.1.1. Scope (1) The scope of this Part shall be as described in Subsection 1.1.2. of Division A.
Notes to Table 7.6.4.2.B.:
8.1.1.2. Definitions (1) In this Part, Soil means in-situ, naturally occurring, unconsolidated mineral or organic material, at the earth's surface that is at least 100 mm thick and capable of supporting plant growth, and includes material compacted or cemented by soil forming processes, but does not include displaced materials such as gravel dumps, mine spoils, or like deposits. 8.1.2. Application
Notes to Table 7.6.4.2.B.:
8.1.2.1. Classification of Systems (1) All sewage systems shall be classed as one of the following: (a) Class 1 — a chemical toilet, an incinerating toilet, a recirculating toilet, a self‑contained portable toilet and all forms of privy including a portable privy, an earth pit privy, a pail privy, a privy vault and a composting toilet system, (b) Class 2 — a greywater
system, (c) Class 3 — a cesspool, (d) Class 4 — a leaching
bed system, or (e) Class 5 — a system that requires or uses a holding tank for the retention of hauled sewage at the site where it is produced prior to its collection by a hauled sewage system.
Notes to Table 7.6.4.2.B.:
8.1.2.2. Operation and Maintenance (1) Operation and maintenance of sewage systems
shall comply with Section 8.9. 8.1.3. Limitations
Notes to Table 7.6.4.2.B.:
8.1.3.1. Discharge (1) Except as provided in Sentences (2) to (6), the sewage system shall be designed and constructed
to receive only sanitary sewage of domestic origin. (2) Where laundry waste is not more than 20% of the total daily design sanitary sewage flow, it may discharge to a sewage system. (3) Where industrial process waste water is treated to the contaminant levels found in domestic sanitary sewage, it may discharge to a leaching bed provided the treatment unit and sewage system
are designed in accordance with good engineering practice. (4) Where kitchen waste water from a restaurant has passed through an operating grease interceptor, it may discharge to a
leaching bed provided the sewage system has been designed in accordance with good engineering practice. (5) Waste water from a kitchen equipped with a garbage grinder may be directed to the sewage system provided the system has been designed to accept such waste water. (6) Water softener and iron filter discharge may be directed to the sewage system provided the system has been designed to accept such discharges. (7) Storm sewage shall not be discharged into a sewage system. (8) The interceptor required in Sentence (4) shall, (a) have a minimum flow rate as required by Sentence 7.4.4.3.(8) using a 60 second drain down time, and (b) conform to, (i) CSA B481.1, “Testing and Rating of Grease Interceptors Using Lard”, or (ii) CSA B481.2, “Testing and Rating of Grease Interceptors Using Oil”. Section 8.2. Design Standards 8.2.1. General Requirements
Notes to Table 7.6.4.2.B.:
8.2.1.1. Scope (1) This Subsection applies to the design of sewage systems.
Notes to Table 7.6.4.2.B.:
8.2.1.2. Site Evaluation (1) A site evaluation shall be conducted on every site where a new or replacement sewage system is to be installed. (2) The percolation time shall be determined by, (a) conducting percolation tests, or (b) classifying the soil according to one of the following methods, (i) the Unified Soil Classification System as described in MMAH Supplementary Standard SB-6, “Percolation Time and Soil Descriptions”, or (ii) the Soil Texture Classification as described in Chapter 3 of USDA, “Soil Survey Manual”. (3) Where the percolation time is determined by a percolation test, there shall be a minimum of 3 locations selected, suitably spaced to accurately evaluate the leaching bed area, with the highest percolation time of the tests being used.
Notes to Table 7.6.4.2.B.:
8.2.1.3. Sewage System Design Flows (1) For residential occupancies, the total daily design sanitary sewage flow shall be at least the value in Column 2 as determined from Table 8.2.1.3.A. (2) For all other occupancies, the total daily design sanitary sewage flow shall be at least the value in Column 2 as determined from Table 8.2.1.3.B. (3) Where a building contains more than one establishment, the total daily design sanitary sewage flow shall be the sum of the total daily design sanitary sewage
flow for each establishment. (4) Where an occupancy is not listed in Table 8.2.1.3.B., the highest of metered flow data from at least 3 similar establishments shall be acceptable for determining the total daily design sanitary sewage flow. Table 8.2.1.3.A.   Residential Occupancy Forming Part of Sentence 8.2.1.3.(1) Item   Column 1 Residential Occupancy   Column 2 Volume, litres 

  1.   Apartments, Condominiums, Other Multi-family Dwellings - per person(1)   275 

  2.   Boarding Houses     

        a) Per person,     

        i) with meals and laundry facilities, or,   200 

        ii) without meal or laundry facilities, and   150 

        b) Per non-resident staff per 8 hour shift   40 

  3.   Boarding School - per person   300 

  4.   Dwellings     

        a) 1 bedroom dwelling   750 

        b) 2 bedroom dwelling   1100 

        c) 3 bedroom dwelling   1600 

        d) 4 bedroom dwelling   2000 

        e) 5 bedroom dwelling   2500 

        f) Additional flow for(2)     

        i) each bedroom over 5,   500 

        ii) A) each 10 m2 (or part of it) over 200 m2 up to 400 m2 (3) ,   100 

        B) each 10 m2 (or part of it) over 400 m2 up to 600 m2 (3) , and   75 

        C) each 10 m2 (or part of it) over 600 m2 (3) , or   50 

        iii) each fixture unit over 20 fixture units   50 

  5.   Hotels and Motels (excluding bars and restaurants)     

        a) Regular, per room   250 

        b) Resort hotel, cottage, per person   500 

        c) Self service laundry, add per machine   2500 

  6.   Work Camp/Construction Camp, semi-permanent per worker   250
Notes to Table 8.2.1.3.B.:
8.2.1.4. Clearances (1) Unless it can be shown to be unnecessary, where the percolation time is 10 minutes or greater, the location of all components within a sewage system shall be in conformance with the clearances listed in Article 8.2.1.5. or 8.2.1.6. (2) Unless it can be shown to be unnecessary, where the percolation time is less than 10 minutes, the clearances listed in Articles 8.2.1.5. and 8.2.1.6. for wells, lakes, ponds, reservoirs, rivers, springs or streams shall be increased to compensate for the lower percolation time. (3) No building shall be constructed closer to any part of a sewage system than the clearances listed in Article 8.2.1.5. or 8.2.1.6. (4) If more than one sewage system is located on a lot or parcel of land, there shall be no overlap of any part of the systems.
Notes to Table 8.2.1.3.B.:
8.2.1.5. Clearance Distances for Class 1, 2 and 3 Sewage Systems (1) Except as provided in Sentences 8.2.1.4.(1) and (2), no Class 1, 2 or 3 sewage system shall have a horizontal distance of less than that permitted by Table 8.2.1.5. Table 8.2.1.5.   Clearance Distances for Class 1, 2 and 3 Sewage Systems Forming Part of Sentence 8.2.1.5.(1) Item   Column 1 Sewage System   Column 2 Minimum horizontal distance in metres from a well with watertight casing to a depth of at least 6 m   Column 3 Minimum horizontal distance in metres from a spring used as a source of potable water or well other than a well with a watertight casing to a depth of at least 6 m   Column 4 Minimum horizontal distance in metres from a lake, river, pond, stream, reservoir, or a spring not used as a source of potable water   Column 5 Minimum horizontal distance in metres from a property line 

  1.   Earth Pit Privy   15   30   15   3 

  2.   Privy Vault   10   15   10   3 

      Pail Privy                 

  3.   Greywater System   10   15   15   3 

  4.   Cesspool   30   60   15   3
Notes to Table 8.2.1.3.B.:
8.2.1.6. Clearances for a Class 4 or 5 Sewage System (1) Except as provided in Sentences 8.2.1.4.(1) and (2), a treatment unit shall not be located closer than the minimum horizontal distances set out in Table 8.2.1.6.A. Table 8.2.1.6.A.   Minimum Clearances for Treatment Units Forming Part of Sentence 8.2.1.6.(1) Item   Column 1 Object   Column 2 Minimum Clearance, m 

  1.   Structure   1.5 

  2.   Well   15 

  3.   Lake   15 

  4.   Pond   15 

  5.   Reservoir   15 

  6.   River   15 

  7.   Spring   15 

  8.   Stream   15 

  9.   Property Line   3 (2) Except as provided in Sentences 8.2.1.4.(1) and (2), the centreline of a distribution pipe or leaching chamber shall not be located closer than the minimum horizontal distances set out in Table 8.2.1.6.B. and these distances shall be increased when required by Sentence 8.7.4.2.(11). Table 8.2.1.6.B.   Minimum Clearances for Distribution Piping and Leaching Chambers Forming Part of Sentence 8.2.1.6.(2) Item   Column 1 Object   Column 2 Minimum Clearance, m 

  1.   Structure   5 

  2.   Well with a watertight casing to a depth of at least 6 m   15 

  3.   Any other well   30 

  4.   Lake   15 

  5.   Pond   15 

  6.   Reservoir   15 

  7.   River   15 

  8.   Spring not used as a source of potable water    15 

  9.   Stream   15 

  10.   Property Line   3 (3) Except as provided in Sentences 8.2.1.4.(1) and (2), a holding tank shall not be located closer than the minimum horizontal distances set out in Table 8.2.1.6.C. Table 8.2.1.6.C.   Minimum Clearances for Holding Tanks Forming Part of Sentence 8.2.1.6.(3) Item   Column 1 Object   Column 2 Minimum Clearance, m 

  1.   Structure   1.5 

  2.   Well with a watertight casing to a depth of at least 6 m   15 

  3.   Any other well   15 

  4.   Spring   15 

  5.   Property Line   3 8.2.2. Treatment and Holding Tanks
Notes to Table 8.2.1.3.B.:
8.2.2.1. Application (1) This Subsection applies to any tank used in a sewage system for collecting, treating, holding or storing sanitary sewage.
Notes to Table 8.2.1.3.B.:
8.2.2.2. Tanks (1) Subject to Sentence (3), a tank that is used as a treatment unit in a Class 4 sewage system or a holding tank in a Class 5 sewage system shall conform to the requirements of CSA B66, “Design, Material, and Manufacturing Requirements for Prefabricated Septic Tanks and Sewage Holding Tanks”. (2) Subject to Sentence (3), material standards, access and construction methods and practices for a tank used for other Classes of sewage systems shall conform to the requirements of CSA B66, “Design, Material, and Manufacturing Requirements for Prefabricated Septic Tanks and Sewage Holding Tanks”. (3) Tanks referred to in Sentences (1) and (2) are not required to conform to the requirements of Clause 10.2.(j) of CSA B66 “Design, Material, and Manufacturing Requirements for Prefabricated Septic Tanks and Sewage Holding Tanks”. (4) Sentence (2) does not apply to a tank that is an integral part of a prefabricated Class 1 sewage system. (5) Access openings shall be located to facilitate the pumping of all compartments and the servicing of the inlet and outlet of each compartment not accessible by removal of the tank top or part of it. (6) A tank shall not be covered by soil or leaching bed fill having a depth greater than the maximum depth of burial that the tank is designed to withstand. (7) A tank shall be securely anchored when located in an area subject to flooding or where ground water levels may cause hydrostatic pressures.
Notes to Table 8.2.1.3.B.:
8.2.2.4. Holding Tanks (1) All holding tanks shall be of such design and construction as will allow the complete removal of solid matter that can be expected to settle in the holding tank
through an apparatus or device suitable for allowing the contents of the holding tank to be removed from the holding tank. (2) A holding tank shall have a working capacity of not less than 9 000 L. (3) Where two or more tanks are used to meet the requirement of Sentence (2), they shall be deemed to be one holding tank
provided they are connected in such a manner as will allow the sanitary sewage contained in them to flow between the tanks. (4) The working capacity of the tanks described in Sentence (3) shall not include any portion of any tank that cannot be completely drained due to the manner in which the connections are made. Section 8.3. Class 1 Sewage Systems 8.3.1. General Requirements
Notes to Table 8.2.1.3.B.:
8.3.1.1. Scope (1) This Section applies to the construction
of a Class 1 sewage system.
Notes to Table 8.2.1.3.B.:
8.3.1.2. Application (1) Except as provided in Sentence (2), a Class 1 sewage
system shall be designed to receive only human body waste for disposal. (2) Where the sewage system is specifically designed for the biological decomposition of non-waterborne biodegradable kitchen wastes or requires the addition of small quantities of plant matter to improve the decomposition of human body waste, it may receive such wastes in addition to human body waste. (3) Where the sewage system is designed with a drain for the removal of excess liquid, then the sewage system shall drain to a Class 3, 4, or 5 sewage system. 8.3.2. Superstructure Requirements
Notes to Table 8.2.1.3.B.:
8.3.2.1. Construction Requirements (1) A privy as described in Subsections 8.3.3. to 8.3.5. shall be enclosed with a superstructure that, (a) is constructed
of strong durable weatherproof materials, (b) has a solid floor supported by a sill constructed of treated timber, masonry or other material of at least equal strength and durability, (c) is easily sanitized, (d) unless it is equipped solely as a urinal, is equipped with one or more seats each having a cover and being supported by an enclosed bench or riser that is lined with an impervious material on all interior vertical surfaces, (e) is equipped with a self-closing door, (f) has one or more openings for purposes of ventilation, all of which are screened, (g) has a ventilation duct that is screened at the top end and that extends from the underside of the bench or riser to a point above the roof of the superstructure, and (h) shall not have any openings for the reception of human body waste, other than urinals and those constructed in accordance with Clause (1)(d). 8.3.3. Earth Pit Privy
Notes to Table 8.2.1.3.B.:
8.3.3.1. Construction Requirements (1) An earth pit privy shall be constructed in the following manner: (a) the bottom of the pit shall be at least 900 mm above the high ground water table, (b) the sides of the pit shall be reinforced so as to prevent their collapse, (c) the pit shall be surrounded on all sides and on its bottom by not less than 600 mm of soil
or leaching bed fill, and (d) the soil
or leaching bed fill around the base of the sides of the superstructure of the earth pit privy shall be raised or mounded to a height of at least 150 mm above ground level. 8.3.4. Privy Vaults and Pail Privy
Notes to Table 8.2.1.3.B.:
8.3.4.1. Construction Requirements (1) A privy vault or a pail privy shall be constructed in the following manner: (a) the container or structure that is to be used for the holding or storage of sanitary sewage
shall be watertight and made of a material that can be easily cleaned, (b) the soil
or leaching bed fill around the base of the sides of the superstructure shall be raised or mounded to a height of at least 150 mm above ground level, and (c) the surface of the ground in the area of the privy vault or pail privy shall be so graded that surface drainage will be diverted away from the privy. 8.3.5. Portable Privy
Notes to Table 8.2.1.3.B.:
8.3.5.1. Construction Requirements (1) A portable privy shall be constructed in the following manner: (a) the portable privy shall have a watertight receptacle that shall be suitable for the holding and storage of any sanitary sewage
deposited in it, (b) the receptacle for the holding and storage of sewage shall be designed and constructed in such a manner as to allow it to be easily emptied and cleaned, and (c) the portable privy shall be constructed of such material and in such a manner that it can withstand the stresses to which it will be subjected during its transportation to and from sites where it is to be used and during loading and unloading from vehicles used for the transportation of the portable privy to and from sites where it is to be used. Section 8.4. Class 2 Sewage Systems 8.4.1. General Requirements
Notes to Table 8.2.1.3.B.:
8.4.1.1. Scope (1) This Section applies to the construction
of a Class 2 sewage system.
Notes to Table 8.2.1.3.B.:
8.4.1.2. Application (1) A Class 2 sewage system shall be designed only for the treatment and disposal of greywater. (2) The total daily design flow for a Class 2 sewage system shall be calculated based on the fixtures
discharging to the system as follows: (a) 200 L per fixture unit where there is a supply of pressurized water, and (b) 125 L per fixture unit where there is no supply of pressurized water. 8.4.2. Design and Construction Requirements
Notes to Table 8.2.1.3.B.:
8.4.2.1. Construction Requirements (1) The bottom of the pit shall be at least 900 mm above the high ground water table. (2) The pit shall be constructed in such a manner as to prevent the collapse of its sidewalls. (3) Any material used to support or form the sidewalls of the pit shall be an open jointed material of a type that will permit leaching
from the pit. (4) The pit shall be provided with a tight, strong cover that shall remain over the pit except when it is necessary to remove it for purposes of adding greywater to or removing greywater from the pit or for purposes of maintenance of the pit. (5) The earth around the perimeter of the pit shall be raised or mounded to a height of at least 150 mm above ground level. (6) The surface of the ground in the area of the pit shall be so graded that surface drainage in the area will be diverted away from the pit. (7) The pit shall be surrounded on all sides and on its bottom by at least 600 mm of soil having a percolation time of less than 50 minutes.
Notes to Table 8.2.1.3.B.:
8.4.2.2. Maximum Sewage Flow (1) A Class 2 sewage system shall not be constructed where the daily design greywater
flow to the system exceeds 1 000 L/day.
Notes to Table 8.2.1.3.B.:
8.4.2.3. Sizing (1) A Class 2 sewage system shall be designed and constructed so that the loading rate to the side walls shall be not more than the value calculated using the formula,  where, LR =  loading rate of the sidewalls in litres per day/m2, and T =  percolation time. Section 8.5. Class 3 Sewage Systems 8.5.1. General Requirements
Notes to Table 8.2.1.3.B.:
8.5.1.1. Scope (1) This Section applies to the construction
of a Class 3 sewage system.
Notes to Table 8.2.1.3.B.:
8.5.1.2. Application (1) A Class 3 sewage system shall not be constructed where the daily design sanitary sewage flow to the system exceeds 1 000 L/day. (2) A Class 3 sewage system shall be designed to receive only the contents of a Class 1 sewage system or effluent from a Class 1 sewage system for disposal. 8.5.2. Design and Construction Requirements