Groundwater is the largest source of liquid freshwater in Canada. Approximately 30% of Canadians rely on groundwater as a domestic water source, and Indigenous and rural communities are disproportionately reliant on groundwater. Recognizing the importance of groundwater, the International Association of Hydrogeologists - Canadian National Chapter (IAH Canada) is a volunteer-led, scientific organization dedicated to promoting the protection and study of Canadian groundwater resources. In 2023, the Committee for Groundwater Advocacy (CGA) was formed as a subcommittee of IAH Canada to advocate for groundwater to be meaningfully included in freshwater management in Canada. One early achievement was a brief submitted to the House of Commons Standing Committee on Environment and Sustainable Development, which made recommendations for including groundwater in federal communications and policy. In 2025, the CGA focused on four activities: 1) Advocacy and Engagement, 2) Communications and Public Outreach, 3) Events and Professional Development, and 4) Policy Review. Results of these activities include two reports on IAH Canada membership trends, three draft op-eds to elevate groundwater’s profile in the public, and a renewed presence on social media that netted more than 400 new followers and improved overall engagement. Two formal responses were prepared and submitted to federal government agencies, and members of CGA have presented committee-related work at several events. Additionally, the CGA grew from 11 members to 27+, increasing the committee’s capacity to advocate for better inclusion of groundwater in policy and public communications. Planning efforts for 2026 activities are underway.