This report outlines results from the initial pilot-testing of a Scorecard to assess the enabling environment for investment in water security, referred to as "the Scorecard”. Developed in collaboration with the Asian Development Bank and partners, the Scorecard aims to identify conditions for attracting and maintaining investment in water security. The report outlines the Scorecard's rationale, scoring methodology, and presents its main components. It also provides results from seven Asian countries, namely, Bangladesh, Mongolia, Nepal, Pakistan, the Philippines, Uzbekistan, and Sri Lanka. Armenia's findings from a subsequent Eastern European pilot test are also incorporated. This is the first in a sub-set of working papers within the Environment Working Paper series presenting research on the enabling environment for investment in water security. It marks the beginning of a process to apply the tool and support policy reforms. The report refrains from offering policy recommendations, focusing on testing the scorecard's ability to assess conditions to attract and sustain investing in water security. For an illustration of country-specific policy recommendations, please refer to the forthcoming Environment Working Paper “Enabling environment for investment in water security: Pilot test in the EU’s Eastern Partner Countries - Armenia case study”.