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Management standard for stormwater systems
This is the first edition of CSA W211, Management standard for stormwater systems. The purpose of this Standard is to provide requirements and recommendations for management of stormwater systems. It defines a risk-based process for decision makers responsible for the operation, maintenance, and management of stormwater systems. Users of this Standard are reminded that this Standard should not be considered a replacement for the requirements contained in any
It was inspired by the report "Developing a Stormwater Quality Management Standard (QMS) in Light of a Changing Climate" (Engineers Canada et al., 2018). This Standard was prepared by the Subcommittee on W211, Management Standard for Stormwater Systems, under the jurisdiction of the Technical Committee on Management Standards for Stormwater Systems and the Strategic Steering Committee on Natural Resources, and has been formally approved by the Technical Committee. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group
This Standard outlines minimum requirements and recommendations for the management of a stormwater system established by an operating authority. It provides a standardized guidance process to manage a stormwater system to meet regulatory requirements, reflect sound policy decision-making, and demonstrate a high standard of care to minimize legal, environmental, social, and economic risks, especially given a changing climate and hydrologic conditions. It also provides a documentation protocol to ensure all changes and decisions made in policy and procedures are well documented, and identifies steps for operating authorities to internally audit their management system. It is written with flexibility such that it could be applicable to any size of stormwater system. This Standard provides
This Standard is intended for use by persons or organizations that own, manage, and/or operate a stormwater system. It also provides a framework to ensure that persons responsible for the stormwater system are provided with the information necessary to support sound decision-making. Other potential users include the following
In particular, provincial/territorial governments play a key role in managing intra-jurisdictional water and land resources. Responsible authorities can use this Standard for better planning, policy making and decision-making. Municipal inspectors can be more informed to ensure conformance in the field. b) Builders/developers: Builders and developers should factor improved stormwater management and climate resiliency into infrastructure design and construction. This Standard can provide guidance around planning, design, and construction of stormwater systems. c) Technical practitioners: Engineering design, planning, and other technical practitioners within and external to government play integral roles in stormwater planning, design, and construction. This Standard can be used to better identify and manage risk, as well as integrate best practices
Other stakeholders More broadly, the following other stakeholders could also use this Standard
In scope The scope of this Standard covers the following types of systems
Note: While many aspects of this Standard could be applicable to areas subject to permafrost, these areas might have unique conditions not accounted for in this Standard
The following are out of scope for this Standard
In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
| SDO | CSA: Canadian Standards Association |
| Document Number | |
| Publication Date | Jan. 1, 2021 |
| Language | en - English |
| Page Count | 50 |
| Revision Level | |
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