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Water development approvals - updates and bulletins

Find the latest updates and bulletins related to processes, guidelines and available services for water development approvals.

You can also visit our water development resources home to access water development approval submission information, including tools, guides, checklists and templates for each step in the development process:

To view the most recent versions of technical guidelines and specifications, for use by the development industry, visit water guidelines and construction specifications.

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Industry bulletins

Development approvals

Effective date Bulletin name
Effective date: August 2026 Bulletin name:

Industry Bulletin May 2026
Effective date: December 2025 Bulletin name:

Interim Changes to Stormwater Management Report Submission and Review Process
Effective date:

June 2025

 Bulletin name:

Update to Scour and Abrasion Protection Requirements for Stormwater Manholes
Effective date:

March 2025

 Bulletin name:

Residential Grade Slip Expiration Timeline
Effective date: March 2024 Bulletin name:

Streamlined CD-MR process enhances user experience bulletin
Effective date: March 2024 Bulletin name:

Established areas linear levy pilot
Effective date: January 2024 Bulletin name:

Updates to the stormwater management and design manual
Effective date: August 2023 Bulletin name:

Updates to the proposed water established area levy
Effective date: March 2023 Bulletin name:

Construction drawing minor revision (CD-MR) policy update
Effective date: July 2022 Bulletin name:

Sanitary servicing study submission process
Effective date: August 2021 Bulletin name:

​DSSP Small format revision update
Effective date: April 2024 Bulletin name:

​Flow metering for commissioning of new watermains bulletin
Effective date: February 2021 Bulletin name:

​Dead end watermains in new subdivisions bulletin
Effective date: ​January 2021 Bulletin name:

​Valve numbering bulletin
Effective date: ​November 2020 Bulletin name:

​Manhole cover bulletin
Effective date: ​October 2020 Bulletin name:

​Update to the January 2018 sewer bypass guideline
Effective date: ​September 2020 Bulletin name:

​2020 Specification bulletin​
Effective date: ​May 2020 Bulletin name:

​Water utility-focused pre-application process ​
Effective date: ​May 2020 Bulletin name:

​Sewer as-built submissions​
Effective date: ​​July 2019 Bulletin name:

Interim CCC/FAC requirements for stormwater reuse irrigation systems
Effective date: July 15, 2019 Bulletin name:

Environmental regulatory requirements for unplanned releases of potable water to the storm system
Effective date: June 1, 2019 Bulletin name:

Test manhole and DSSP submission process update
Effective date: April 18, 2019 Bulletin name:

Interim runoff volume control
Effective date: November 21, 2018 Bulletin name:

Increase of CD-MRI submissions for the construction drawing - minor revision process
Effective date: November 5, 2018 Bulletin name:

Searching for subdivision and private site stormwater management reports
Effective date: October 10, 2018 Bulletin name:

Master development agreements and interim development
Effective date: October 5, 2018 Bulletin name:

Interim imperviousness ratios
Effective date: July 1, 2018 Bulletin name:

ESC guidelines implementation​
Effective date: July 1, 2018 Bulletin name:

ESC construction drawing de-coupling
Effective date: July 1, 2018 Bulletin name:

Service valves greater than 50MM
Effective date: May 1, 2018 Bulletin name:

Water ePay drinking water distribution disconnection process change
Effective date: January 1, 2018 Bulletin name:

Unit area release rate requirements for development
Effective date: January 1, 2018 Bulletin name:

Stormwater volume control targets for 2018
Effective date: November 1, 2017 Bulletin name:

WRWS Services shutdown requests for water mains 400mm
Effective date: September 1, 2017 Bulletin name:

ESC drop off location
Effective date: July 1, 2016 Bulletin name:

Water quality services sediment containment systems p-value updates
Effective date: October, 2015 Bulletin name:

Stormwater volume control targets update
Effective date: March 2014 Bulletin name:

Water resources/water services interim stormwater targets
Effective date: December 2013 Bulletin name:

2011 Amendments to the stormwater management and design manual

Inspection services

Effective date Bulletin name
Effective date: July 1, 2026 Bulletin name:

Sheet 61A bulletin
Effective date: May 2026 Bulletin name:

Volume reporting for commissioning of new water mains and services
Effective date:

March 2026

 Bulletin name:
Effective date:

March 2026

 Bulletin name:

Private Site Deep Utility Inspection for DSSPs
Effective date: November 2025 Bulletin name:

Updates to the Potable Water Flushing table
Effective date: June 1, 2025 Bulletin name:

Revision to the Non-Joint Construction Completion Certificate (CCC)  Pilot Process
Effective date: March 2025 Bulletin name:

Flushing Permit Contact Update
Effective date: January 1, 2025 Bulletin name:

Standard Specifications for Sewer and Waterworks Construction 
Effective date: June 2024 Bulletin name:

Implementation of Non-Joint Construction Completion Certificate (CCC) Process for Underground Utilities
Effective date: May 2024 Bulletin name:

Flow metering for commissioning of new water mains

Effective date: January 31, 2025 Bulletin name:

Full Implementation of AASHTO M306 for Municipal Castings
Effective date: January 1, 2023 Bulletin name:

Standard specifications for waterworks and sewer construction
Effective date: December 2022 Bulletin name:

Portland limestone cement
Effective date: July 2022 Bulletin name:

​Irrigation pipe supply industry bulletin
Effective date: September 2021 Bulletin name:

Revisons to asbuilt submission content requirements
Effective date: September 2021 Bulletin name:

Storm service (75mm) pipe shortage - modified installation standard
Effective date: March 2021 Bulletin name:

14 day main control changes
Effective date: March 2021 Bulletin name:

​Obtaining dewatering and drainage permits and notifications
Effective date: ​February 2021 Bulletin name:

​Declaration letter for CCTV video and inspection report
Effective date: ​May 2020 Bulletin name:

​PPE for accessing customer homes/businesses
Effective date: July 15, 2019​ Bulletin name:

Indemnified addendum applications and inspection requests
Effective date: November 1, 2018 Bulletin name:

Cathodic protection
Effective date: September 9, 2018 Bulletin name:

Indemnification process change
Effective date: July 5, 2018 Bulletin name:

Standard specifications 2018
Effective date: April 11, 2016 Bulletin name:

Subdivision interim de-chlorination guideline
Effective date: June 1, 2018 Bulletin name:

Storm outfall grating standard specifications

Operations

Effective date Bulletin name
Effective date: July 1, 2018 Bulletin name:

Operation of the water distribution system in new subdivisions and tie-ins
Effective date: July 24, 2017 Bulletin name:

Price increase for fire flow tests

This information has no legal status and cannot be used as an official interpretation of the various bylaws, codes and regulations currently in effect. The City of Calgary accepts no responsibility to persons relying solely on this information. Web pages are updated periodically. ​