Man taking a water sample in a wetland reserve.

Impact Report

This project, funded by The Ofwat Innovation Fund, is underpinned by a cross-sector partnership that includes water companies, freshwater and environmental scientists, academic bodies, eNGOs, and national regulators. This Impact Report highlights some of the accomplishments.

This interactive pdf is just snapshot of project outputs and resources, and the work partners have delivered over the past four years. Information is drawn from partners’ self-reported surveys, demonstrator materials, their case studies and web pages. Percentages refer to the partners who answered each question, and quotes are respondents’ own words. It’s just a small taste of the breadth of CaSTCo, intended to orientate you quickly before you dive deeper.

You’ll also find an introduction to our Roadmap for the future: a comprehensive, forward-looking guide that sets out the people, tools and policy steps partners say will sustain and scale the work.

Contents of this report

Section 1: Working together

CaSTCo’s strength came from the network that surrounded and supported it. Collaboration flourished through shared research, national innovation, and the trusted relationships that connected partners beyond the demonstrator catchments: proof that progress happens when we work together.

Section 2: Common framework

Partners co-developed the practical foundations for collaboration: shared monitoring principles, planning templates, method audits, data governance, and the CaSTCo Data Hub. Together, these tools have laid foundations to build consistency, trust, and coordination between partners, showing how open, quality-assured data can support decisions at every level.

Section 3: Testing in demonstrator catchments

The framework came to life through real-world pilots. Catchment teams tested new approaches on the ground: running WaterBlitzes, auditing methods, and developing dashboards that turn data into action. Each catchment fed insights back into the network, strengthening the national framework through lived experience.

Section 4: Looking to the future

Innovation and future planning continues to develop the community and tools stakeholders need. CaSTCo Taskforce’s 10-Year Roadmap shows the comprehensive plan to leverage what we’ve done so far and scale collaborative monitoring across the country.

CaSTCo proves that collaboration can transform how we monitor and manage rivers. This Impact Report and the Roadmap are an invitation to build on that foundation: to keep sharing knowledge, strengthening partnerships, and turning evidence into action for healthier rivers.

This lower quality PDF (>9mb) can be used for emailing and this preview link can be used for quick online viewing. For media queries please email castco@theriverstrust.org.

We've just published the CaSTCo Roadmap. Learn more

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