Mitigation of the Risks of Inflow and Infiltration in New Sanitary Sewer Systems

Norme CAN/BNQ 3682-320
Mitigation of the Risks of Inflow and Infiltration in New Sanitary Sewer Systems

Inflow/Infiltration (I/I) in sanitary sewer systems is a chronic issue throughout Canada. Negative consequences of I/I include increased risk of flooding associated with sewer backup, multiple risks to the environment and risks to public health and safety.

I/I creates a lack of capacity in pumping stations and trunk sewer systems, hence limiting the potential for urban densification and additional developments in urban communities. I/I also increases life cycle costs of sanitary sewer systems and can reduce by many years the lifespan of infrastructure. Sanitary sewage treatment plants may experience negative impacts associated with wet weather peaking, and overflow by-passes at pumping stations. As well, secondary by-passes at sanitary sewage treatment plants present significant risk to surface water systems associated with sanitary sewer system overflows. Negative impacts of I/I are exacerbated by increasing urban populations, increasing urban density/infill development, and aging infrastructure. I/I is also expected to be affected by climate change.

This standard has been developed to complement the existing resources by providing comprehensive guidance to limit risk of I/I in new sanitary sewer system construction. For further information concerning occurrence of I/I in new sewer system construction in Canada, refer to the foundational document prepared to support the development of this standard: “Reducing the Risk of Inflow and Infiltration (I/I) in New Sewer Construction”.

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12830	ANG	CAN/BNQ 3682-320	Mitigation of the Risks of Inflow and Infiltration in New Sanitary Sewer Systems
Version Language Publication date Edition Updated on No. of pages Price + 3682-320 3682-320A:PDF PDF English 2023-05-04 1 62 Free
12829	FRN	CAN/BNQ 3682-320	Atténuation des risques de captage et d'infiltration dans les nouveaux réseaux d'égout sanitaire
Version Language Publication date Edition Updated on No. of pages Price + 3682-320 3682-320:PDF PDF French 2023-05-04 1 68 Free

Standards committee members

Number of committee members: 21

Ms. Celia Abbas	Center for research for infrastructures in urban area
Mr. Susheel Arora	Halifax Regional Water Commission
Mr. Abhishek Bhargava	Epcor Utilities
Mr. Brent Burton	Metro Vancouver
Mr. Pierre-Yves Despatis	Régie du bâtiment du Québec (RBQ)
Mr. Pierre Dugré	Aqua Data
Mr. David Kellershohn	City of Vaughan
Ms. Twyla Kowalczyk	Associated Engineering (Alberta)
Mr. Serge Leroux	IPEX Management
Mr. Norm B. Litchfield	Meritech Engineering
Mr. James (Jim) McAloon	Capital Regional District
Mr. Kiyoshi Oka	The Regional Municipality of Halton
Mr. Muhammad Riaz ul Haq	Ministry of the Environment, Conservation and Parks
Mr. Farshad Salehzadeh	Regional Municipality of Peel
Mr. Dan Sandink	Institute for Catastrophic Loss Reduction
Mr. Jitender Singh	National Research Council
Mr. Ilija Stetic	Niagara Region
Mr. Olivier Trudel-Beaulieu	Ville de Montréal
Mr. Perry Wager	Alberta Municipal Affairs, Technical and Corporate Services
Ms. Michelle Ward	AMG Environmental
Ms. Sarah Wells	City of Vancouver

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