Across the world, almost 1.2bn people live in areas where water is physically scarce and this has an enormous impact on the quality of life.

Without clean water, communities suffer from recurrent diarrhoea and other debilitating or fatal diseases which, together with the time spent going to collect it, means a significant amount of time for education and employment is lost.

Collectively, women in 25 countries in sub-Saharan Africa spend at least 16 million hours each day collecting drinking water.

So, how could things be different?

In this film we head to the western Kenyan town of Kakamega  and to the nearby village of Sisokhe to meet social worker  Rose Atieno  and Catherine Ondele, a nurse,  who are using rainwater harvesting technology to bring clean water to villages.