Across Canada, governments, researchers, NGOs, Indigenous nations and organizations, and community groups are generating valuable data to track freshwater conditions above and below the earth’s surface. When integrated, this cross‑sector information can reveal insights at spatial and temporal scales that exceed the capacity of any single monitoring program. Yet, connecting diverse datasets in consistent, reusable formats remains a persistent challenge. Open-access platforms like DataStream help address this by bringing water data together across sectors and jurisdictions using standardized formats that make information easy to find and use. To date, DataStream has focused on surface water quality. However, a holistic understanding of freshwater systems depends on recognizing and accounting for the strong connections between surface water and groundwater and ensuring that both data types are accessible. To meet this need, DataStream is expanding its open data platform to include groundwater quality data. Building on a decade of experience supporting surface water monitoring programs through shared data infrastructure and hands-on support, this presentation looks ahead to the next chapter of bringing groundwater data to light across Canada. We will highlight how DataStream’s neutral role, collaborative approach, and commitment to long-term data preservation can strengthen the impact of diverse groundwater research and monitoring efforts.