The Sustainable Development Goals, adopted by the Member States of the United Nations in September 2016, contain both ‘Outcome’ and ‘Means of Implementation’ targets. However, there is generally weak evidence linking the Means of Implementation to outcomes, they are imperfectly conceptualised and inconsistently formulated, and tracking their largely qualitative indicators will be difficult. In this paper, we analyse and critique the Means of Implementation targets of the Sustainable Development Goal on water and sanitation (SDG6). Improvements are recommended that would reflect: the considerable investment needed to attain SDG6; the important role of the state, including government leadership and planning; the utility of disaggregating financial and capacity-building assistance; and the need for people to realise their rights to information, voice and remedy. Recommendations are also made for relevant indicators, including indicators that are applicable to governments in both aid-providing and aid-receiving countries.