The Ontario Building Code | Other Treatment Units
8.6.2.2. Other Treatment Units
(1) Except as provided in Sentence (2), a treatment unit, other than a septic tank, shall be designed such that the effluent does not exceed, for the level of the treatment unit set out in Column 1 of Table 8.6.2.2., the maximum concentrations set out opposite it in columns 2 and 3 of Table 8.6.2.2.
Table 8.6.2.2.
Other Treatment Unit Effluent Quality Criteria
Forming Part of Sentences 8.6.2.2.(1) and (2)
| Item | Column 1 Classification of Treatment Unit(1) | Column 2 Suspended Solids(2) | Column 3 CBOD5(2) |
| 1. | Level II | 30 | 25 |
| 2. | Level III | 15 | 15 |
| 3. | Level IV | 10 | 10 |
Notes to Table 8.6.2.2.:
(1) The classifications of treatment units specified in Column 1 correspond to the levels of treatment described in CAN/BNQ 3680-600, "Onsite residential Wastewater Treatment Technologies".
(2) Maximum concentration in mg/L based on a 30 day average.
(2) A treatment unit that is used in conjunction with a leaching bed constructed as a shallow buried trench, Type A dispersal bed or Type B dispersal bed shall be designed such that the effluent does not exceed the maximum concentrations set out opposite a Level IV treatment unit in columns 2 and 3 of Table 8.6.2.2.
(3) All treatment units referred to in Sentences (1) and (2) that contain mechanical components shall be equipped with an audible and visual warning alarm so located to warn the occupants of the building served or the operator of the treatment unit of a malfunction in the operation of the treatment unit.
(4) All treatment units referred to in Sentences (1) and (2) shall permit the sampling of the effluent.
(5) A treatment unit is deemed to comply with Sentences (1) and (2) if it has been certified to CAN/BNQ 3680-600, "Onsite residential Wastewater Treatment Technologies" using a temperature condition listed under option a) or b) of Clause 8.2.2. of that standard.
(6) Every operator of a treatment unit shall obtain, from the manufacturer or distributor of the treatment unit, literature that describes the unit in detail and provides complete instructions regarding the operation, servicing, and maintenance requirements of the unit and its related components necessary to ensure the continued proper operation in accordance with the original design and specifications.
Section 8.7. Leaching Beds
8.7.1. General Requirements