Structural & Geotechnical Engineering Across British Columbia
Onsite Septic System Assessment & Design
An onsite sewage system is usually located on the land where sewage originates. This type of system treats effluent from buildings that are not serviced by a larger municipal or regional sewage system.
Onsite Sewage System:
The Sewerage System Regulation describes three types of sewage systems approved for the disposal of wastewater (domestic sewage):
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Type 1: Treatment by a septic tank and dispersal field only.
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Type 2: Treatment that produces an effluent consistently containing less than 45 mg/L of total suspended solids and having a five-day biochemical oxygen demand of less than 45 mg/L.
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Type 3: Treatment that produces an effluent consistently containing less than 10 mg/L of total suspended solids and having:
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A five-day biochemical oxygen demand of less than 10 mg/L.
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A median fecal coliform density of less than 400 Colony Forming Units per 100 mL.
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Service Process:
Process and Parties involved in administering
the Sewerage System Regulation
