Access to safe, clean water by communities in Papua and Eastern Indonesia is poor. Both appropriate infrastructure and behaviour change can plan a role in improving this. ASP works with EON Engineering in Papua to appropriately and sustainably develop and implement water systems which provide reliable and safe water to communities. They also work on changing behaviours in households to increase the safety of drinking water and decrease poor hygiene. ASP have pioneered the implementation of Community-Led Total Sanitation and hand-washing programs in this area.