The Ontario Building Code | Pumps and Siphons

8.6.1.3. Pumps and Siphons

(1) Where the total length of distribution piperequired is 150 m or more, the sewage system shall have at least one pump or a siphon contained in a dosing tank that may be a separate compartment within the tank structure, for distribution of the effluent.

Note: On January 1, 2018, Sentence 8.6.1.3.(1) of Division B of the Regulation is amended by adding "or leaching chamber" after "distribution pipe". (See: O. Reg. 139/17, s. 58 (1))

Note: On January 1, 2018, Article 8.6.1.3. of Division B of the Regulation is amended by adding the following Sentence: (See: O. Reg. 139/17, s. 58 (2))

(1.1) Where the total length of leaching chamber is 150 m or more, a distribution pipe shall be installed at the centreline of the leaching chamber and extend the total length of leaching chamber to allow for dosing of the effluent.

(2) Alternating siphons shall not be installed in a sewage system.

(3) Where 2 or more pumps are employed within a dosing tank, the pumps shall be designed such that the pumps alternate dosing, and dosing shall continue in the event that one pump fails.

(4) Where a pump or siphon is required, the pump or siphon shall be designed to discharge a dose of at least 75% of the internal volume of the distribution pipe within a time period not exceeding fifteen minutes.

Note: On January 1, 2018, Article 8.6.1.3. of Division B of the Regulation is amended by adding the following Sentence: (See: O. Reg. 139/17, s. 58 (2))

(5) Where a pump or siphon is required, the pump or siphon shall be equipped with a device that shall produce an audible and visual alarm signal that indicates a high water level in the pump or siphon chamber.

8.6.2. Treatment Units