The methodology for global indicators 6.1.1 and 6.2.1 explains how to monitor the “proportion of population using safely managed drinking water services” and the “proportion of population using safely managed sanitation services, including a handwashing facility with soap and water”.
WHO and UNICEF are the custodian agencies of indicators 6.1.1 and 6.2.1, see their reports here.
Learn more about water and sanitation monitoring, including indicators 6.1.1 and 6.2.1, here.
Download methodology for monitoring 6.1.1 on drinking water and 6.2.1 on sanitation and hygiene:
Arabic, Chinese, English, French, Russian, Spanish