At this moment the catalogue is developed by a working group within the task force World Water Day 2022 of  UN-Water. IGRAC is a lead developer and the hosting organisation. Herewith, we invite specialists (from various disciplines) who deal with groundwater to get involved in the development of the catalogue. Specific contributions are expected in the form of:   

• Systematic descriptions of various approaches and provisions (tool, measures, and regulations) to effectively limit water usage, protect groundwater and involve stakeholders.  
• Specific cases of exemplary practice, with analysis of governance provisions and practical procedures that were needed to make a progress. 
• Additions to the list of groundwater-related societal & environmental issues and the groundwater role/services portions of the catalogue are also welcomed.