ACAP Humber Arm is pleased to announce the launch of the 9th season of our Coastal Matters speakers series.  

Mr. Carl Yates, General Manager of Halifax Water, will kick start our season with a presentation entitled A Holistic Approach to Water Loss Control.  An abstract for the talk and Mr. Yate’s bio can be found below.  This presentation will take place 12:30 to 1:30pm, Thurs, Sept 11th in room 2016 of the Arts and Science Building (the building with the swimming pool), Grenfell Campus.  This specific Coastal Matters session is being offered in partnership with the City of Corner Brook.

As with all Coastal Matters presentations this session is free of charge and open to the public.  RSVP’s not required.  Tea and coffee will be available. 


A Holistic Approach to Water Loss Control

Halifax Water has documented success in water loss control through adoption of the methodology promoted by the Water Loss Task Force of the International Water Association [IWA].   After 15 years of adoption and adaptation, leakage improvement is reflected in an Infrastructure Leakage Index [ILI] reduction from 9.0 to 2.5 and annual savings of $600,000.  Water loss control at Halifax Water is holistic in nature and benefits greatly from a fully metered customer base, a distribution network that is subdivided into 75 permanent district metered areas [DMAs], and a robust supervisory control and data acquisition [SCADA] system.  These tools are used in tandem for night flow analysis for leakage assessment and to determine best achievable benchmarks in system flows.  A typical DMA incorporates a zone in the distribution system with a pipe length of 30 km, 150 hydrants or approximately 2500 customer connections.

As part of its holistic approach, pressure management through fixed outlet control has been actively pursued by Halifax Water to ensure pressure within the distribution system is optimized for customer service and kept at levels to minimize leakage.  Building on the successful installation of DMAs, flow modulated pressure control was installed in a typical sector in Dartmouth to further control and manage leakage.  The Dartmouth Central DMA was selected to evaluate advanced pressure management as a leakage management tool for the Water Research Foundation [WaterRF] Project 2928, “Leakage Management Technologies”.  By reducing system pressures during periods of low demand, flow rates through background and active leaks were reduced.  Dual supplies into the DMA offered the challenge of modulating two control valves in geographically differing locations, to achieve the desired system pressure in response to the changing demand. After further research beyond the WaterRF project, Halifax Water has optimized advanced pressure management in the Dartmouth  DMA, and is expanding the application to other DMAs.


Carl D. Yates, M.A.Sc., P.Eng.

General Manager, Halifax Water

Carl Yates has extensive experience in the water utility profession having served as Project Engineer, Chief Engineer and General Manager of the Halifax Water Commission from 1988 to 1996. In 1996, he was appointed General Manager of the Halifax Regional Water Commission which assumed a regional mandate after the municipal amalgamation of the greater Halifax area in 1996. In 2007, Mr. Yates oversaw the formation of the first regulated water, wastewater and stormwater utility in Canada with the transfer of wastewater and stormwater assets from the Halifax Regional Municipality. Halifax Water is a body corporate municipal utility, generating approximately 130 million dollars in annual revenue with assets of over $2 Billion.

Mr. Yates obtained a Bachelor of Engineering degree from Memorial University of Newfoundland in 1984 and a Masters of Applied Science degree from the Technical University of Nova Scotia [now Dalhousie University] in 1992. Mr. Yates is Past Chair of the Potable Water Committee for the National Research Council InfraGuide project, Past Chair of the Security and Emergency Management Committee of the Canadian Water and Wastewater Association, Chair of the Focus Area Council of the Water Research Foundation, a Board member of the Canadian Water Network, a member of the American Water Works Association, National Association of Corrosion Engineers, International Water Association, and a member of the Board of Directors of Special Olympics Nova Scotia.