Case studies Case studies Find stories that illustrate practical experiences gathered in the implementation of IWRM. Case studies are submitted by practitioners and professionals from all over the world and reviewed by the GWP knowledge management team. 0 case studies in comparison list You must have JavaScript enabled to use this form. Thematic Tagging Ecosystems/Nature-based solutions Water services (-) Private Sector Facet Thematic Tagging Region Americas Country Costa Rica IWRM Tools B1.01. Regulatory Bodies and Enforcement AgenciesC4.04. Pollution ChargesC4.06. Payments for Ecosystem ServicesD1.04. Water-Related Financial Disclosures Challenge Facet Challenge Sort by A → ZZ → AOldest firstNewest first Apply Case Study Costa Rica: Environmentally Adjusted Levies for Water Use 2013 compare