SDG #6 is to “Ensure availability and sustainable management of water and sanitation for all”
Within SDG #6 are 8 targets, of which we here focus on Target 6.a:
By 2030, expand international cooperation and capacity-building support to developing countries in water- and sanitation-related activities and programmes, including water harvesting, desalination, water efficiency, wastewater treatment, recycling and reuse technologies
Target 6.a has one indicator:
Indicator 6.a.1: Amount of water- and sanitation-related official development assistance that is part of a government-coordinated spending plan
Using the OECD’s Creditor Reporting System, we can disaggregate development flows by type. In this instance, we want to separate out water aid.
Let's look at ODA spent on water as part of a government’s budget. As of 2021, the biggest spender was India, with $420 million. Following was Vietnam and Cambodia, with $413 million and $309 million, then Bangladesh with $284 million and Egypt with $261 million.