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Home / Who We Are/ CTC Source Protection Committee

About the Committee

The Credit Valley – Toronto and Region – Central Lake Ontario (CTC) Source Protection Committee (SPC) comprises 21 people from across the CTC Source Protection Region.

The Committee has worked since 2007 to guide technical and policy decisions for local Terms of References, Assessment Reports, and a Source Protection Plan to protect municipal sources of drinking water. The CTC Source Protection Plan has been in effect since Dec. 31, 2015.

The Committee oversees necessary amendments, evaluates implementation of the Source Protection Plan, and partakes in related public and stakeholder consultations.

The CTC Source Protection Committee regularly holds meetings, which are open to the public. For more information, visit our Meetings page.

Committee Members

View CTC Source Protection Committee Members Notice of Appointment

Nathan Hyde is a nationally recognized CAO in Canadian local government, known for driving large-scale transformation, championing fiscal responsibility, and delivering innovative public-sector solutions. Over the past 23 years, he has held C-suite roles in some of Canada's largest and fastest-growing municipalities, leading with vision, strategy, and results.
A proven innovator and governance expert, Nathan has consistently delivered measurable outcomes across complex public-sector environments. In his current role as CAO at the Town of Caledon—Canada’s fastest-growing community—he is leading a bold and future-focused strategy to accommodate over 200,000 new residents and generate 125,000 net new jobs. His work is instrumental in shaping the economy, infrastructure, and public policy of one of Canada’s most ambitious and rapidly evolving growth corridors.
Previously, as CAO of another municipality, Nathan led negotiations for a landmark $200 million public-private partnership—the largest capital works project in the region’s history—doubling the town’s urban population and positioning the community for long-term prosperity.
Nathan is one of only five Canadian municipal executives to hold the prestigious ICMA-CM designation. A sought-after thought leader, he has served as a panelist with the Public Sector Network on disruption and innovation, and with IPAC on the evolving role of municipalities in an era of change.
In 2023, the Government of Ontario appointed Nathan as Chair of the CTC Source Protection Committee, where he oversees the protection of drinking water for over 5 million residents across 33 municipalities in the most densely populated region of Canada.
Internationally, he has worked with the UK Foreign & Commonwealth Office on public affairs and national policy development, further strengthening his expertise in global governance and diplomacy.
Nathan’s governance experience includes serving on several prominent boards, including Headwaters Health Care Centre, the Dufferin Board of Trade, the Public Affairs Association of Canada, and the Ontario Professional Planners Institute.
He is a graduate of both Harvard and Cambridge Universities, holding five academic degrees spanning law, business, public administration, and bioethics. He also holds advanced public-sector management credentials, including the CMMIII and ICMA-CM designations.
Nathan is a member of the Sovereign Military Order of Malta, the Harvard Club of Boston, and Toronto’s Albany Club—further reflecting his commitment to service, leadership, and civic engagement.

  • Liza Ballantyne (City of Toronto) is the Director of Environment, Energy & Emergency Planning for Toronto Water. She has more than 20 years experience working in the consulting and municipal engineering fields focusing predominantly on drinking water treatment, process optimization and source protection through her involvement in the Lake Ontario Collaborative Group.
  • Tom Bradley (Region of York, Town of Aurora, Township of King, City of Markham, City of Richmond Hill, City of Vaughan, Town of Whitchurch-Stouffville) is the Program Manager, Source Water Protection, and the Risk Management Official for the Regional Municipality of York. He is a professional geoscientist with more than 20 years of experience in the groundwater industry. 
  • William Fernandes (City of Toronto) is the Acting Deputy General Manager, Toronto Water and is responsible for the water and wastewater treatment for the City of Toronto. He is a Professional Engineer licensed in the province of Ontario, with more than 40 years of Operations and Maintenance and Capital experience working with Unilever, the Ontario Clean Water Agency, the Region of Peel and City of Toronto.
  • Chris Gerrits (Township of Adjala-Tosorontio, Township of Amaranth, Township of East Garafraxa, Town of Mono, Town of Orangeville, Dufferin County, Simcoe County) has served as the Mayor of the Township of Amaranth since 2022, and has sat on council since 2014. Chris is a founding member of the Canadian National Ground Water Association, and is involved with a number of committees in Dufferin County.
  • Alex Hilson (Town of Erin, Region of Halton, Town of Halton Hills, Town of Milton, Town of Oakville, Wellington County) is a councillor for the Town of Halton Hills and resides in Acton. He has been involved with numerous local service and volunteer organizations within Halton Hills including the Downtown Acton Business Improvement Area, Optimist Club of Halton Hills, and Inspire Halton. 
  • Tavis Nimmo (Durham Region, Town of Ajax, Municipality of Clarington, City of Oshawa, City of Pickering, Township of Scugog, Township of Uxbridge, Town of Whitby) is the Manager of Water Resource Monitoring & Protection at Durham Region. He has over 15 years of experience developing and implementing water and wastewater operational support programs and is a Certified Engineering Technologist (CET).
  • Elvis Oliveira (Region of Peel, City of Brampton, Town of Caledon, City of Mississauga) is the Director of Water and Wastewater Infrastructure Planning, Partnerships and Compliance for the Region of Peel. He has over 30 years of experience in municipal water and wastewater operations, regulatory compliance and asset management.
  • Chesley Blahut (Citizen-at-large) has 15 years of experience as a professional engineer in civil engineering. His focus has been in the land development sector and has been involved in many stormwater, water and sewer projects. 
  • Cody Brown (Citizen-at-large) is a GIS-IT professional currently working for the Municipality of Clarington. He has over ten years experience in GIS and spatial data analysis, as well as previous experience in source protection projects, municipal planning, and development services. Cody has lived in the CTC Source Protection Region for over 30 years and is very familiar with the challenges protecting the Region's water supplies.
  • Kenneth Dion (Citizen-at-large) is the Project Director – Port Lands Integration for Waterfront Toronto. He has almost 25 years experience in the fields of Project Management, Environmental Assessment, and the planning and implementation of large-scale riverine and waterfront habitat restoration projects, including the Toronto Port Lands Flood Protection Project, Jim Tovey Lakeview Conservation Area, Broadview Eastern Flood Protection Project, and the Downtown Brampton Flood Protection Project.
  • Mark Heaton (Environmental Non-Governmental Organization) is a resident of Caledon living in the West Credit River subwatershed.  He is the Senior Biologist for Ontario Streams, which is an environmental registered charity dedicated to the conservation and rehabilitation of stream, river, and wetland habitats within Ontario.  Prior to this current position, he worked for the Ontario Ministry of Natural Resources as a fish and wildlife biologist for 34 years.
  • Rosemary Keenan (Environmental Non-Governmental Organization) is a resident of Brampton and has served on several municipal committees including the Brampton Environment Advisory Committee, Lakeview Community Liaison Committee and the Credit Valley Trail Implementation Committee. She is a volunteer member of Sierra Club Ontario - Peel Region Group, and the Brampton Environmental Alliance.
  • Jeff Light (Citizen-at-large) is a resident of Toronto and has over 7 years of experience as a Civil Engineer in the land development industry. He is passionate about water resources and the environment.
  • Peter Miasek (Citizen-at-large) is a resident of Markham and has more than 30 years experience in the petrochemical industry. He is now with several non-government organizations advocating for sustainable transportation and compact urban development.
  • Colin Evans (aggregate sector) is a Senior Manager of Environment and Lands at CBM/St. Marys Cement/Votorantim Cimentos, a Cement, Aggregates and Ready mix Concrete Company. He has worked on projects for Ready mix and aggregates in the areas of Water, Air, Noise, Waste, and General Environmental management. 
  • Lee Gould (road salt sector) is the Executive Director of the Smart About Salt Council, a not-for-profit dedicated to addressing negative impacts of poor winter maintenance practices on freshwater resources while also promoting safety through best management practices. He brings three decades of leadership experience to support volunteers on the Smart About Salt Council.
  • Geoff Maltby (agriculture sector) is a member of the Halton Region Federation of Agriculture and owns and operates a one hundred and twenty acre family farm in Halton Hills that includes a farm store offering local produce, and are also suppliers to local farmers markets. He has or is currently involved in numerous boards or committees involving agriculture, racehorses and rural policy. Geoff and his family received a “Friends of the Credit Conservation Award of Distinction,” in 2014 for their commitment to practicing sustainable agriculture. 
  • Gary Mountain (agriculture sector) is a member of the Peel Federation of Agriculture, the Peel Soil and Crop Improvement Association and current Chair of the Peel Agricultural Advisory Working Group. He has been involved with the Peel Rural Water Quality and the ALUS Peel Pilot programs. Gary and his family operate a 185 acre farm in Caledon.
  • Ryan Wheeler (petrochemical/petroleum sector) is the Director of Shearwater Environmental Emergency Solutions, an environmental emergency management consulting company. He supports numerous oil and gas pipelines and facilities prevent, prepare for and respond to environmental emergencies throughout the Great Lakes and St. Lawrence Region. Additionally, Mr. Wheeler is the Canadian Coordinator / Great Lakes Advisor to Tri-State Bird Rescue & Research of Newark, Delaware. In this position he works closely with the Great Lakes marine industry and numerous Canada and U.S. agencies. 
  • Vacant: Chemical Industry sector
  • Vacant: Land Development sector
  • Chris Darling: CAO, Central Lake Ontario Conservation Authority
  • Terri LeRoux: Interim CAO, Credit Valley Conservation
  • John MacKenzie: CEO, Toronto and Region Conservation Authority

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The Credit Valley Source Protection Authority is seeking applications for a Chemical sector representative on the Committee.. Learn more.