I spend much of my time working with students from countries like India and I always feel humbled to realise how lucky we are in New Zealand. One basic advantage is that we all have access to toilets and water to wash our hands with. Many are not so lucky.
Certainly accessible sanitation is one of the UN sustainable development goals. And I understand the importance of all of the goals but it comes as a shock to realize that the accepted analytical basis for the sanitation goal underestimates the problem. The value of improving sanitation in low income countries is, likely, underestimated. Follow the link(s) and see why.
The value of sanitation at reducing child mortality in many low income countries has been substantially underestimated, according to recent research.