Achieving Sustainable Development Goal (SDG) 6 — sustainable water and sanitation for all — requires increased focus on water quality, but limited availability of usable water quality data is a major hurdle to seeing increases with coverage of safely managed water service. Despite the temptation to focus on better water treatment technologies, Water For People’s experience working with local governments in 35 districts across nine countries has highlighted the need strengthen water quality testing systems instead. Read more in this article by Kelly Latham of Water For People, an Agenda for Change member, here.