About the UNEP Wastewater and Environmental Surveillance ProgrammeWastewater and Environmental Surveillance is an increasingly important tool for strengthening public health surveillance, environmental protection, and One Health collaboration. Wastewater and Environmental Surveillance (WES) involves collecting and analysing information from wastewater and environmental sources to generate evidence that can support public health and environmental decision-making. One Health CoordinationProposals should strengthen collaboration among public health, environmental, water, wastewater, laboratory, and other relevant sectors. Eligible governmental institutions and intergovernmental organisations in African countries can apply if they have a relevant mandate covering WES, wastewater surveillance, environmental surveillance, public health surveillance, environmental management, laboratory systems, or One Health coordination. ConclusionThe UNEP Wastewater and Environmental Surveillance funding opportunity provides African countries with support to establish practical foundations for harmonised WES systems and strengthen collaboration between environmental and public health sectors.