Around 315,000 children under-five die every day from diarrhoeal diseases caused by dirty water and poor sanitation. That's 900 children per day, or one child every two minutes.
(WHO/UNICEF 2015)

More than 650 million people in the world do not have access to safe water.
(WHO/UNICEF Joint Monitoring Programme (JMP) Report 2015 update)

For every $1 invested in water and sanitation, an average of at least $4 is returned in increased productivity.
(Hutton, Global costs and benefits of drinking-water supply and sanitation interventions to reach the MDG target and universal coverage, WHO, Geneva, 2012: page 4)

Half the hospital beds in developing countries are filled with people suffering from diseases caused by poor water, sanitation and hygiene.
(UNDP Human Development Report, 2006 http://hdr.undp.org/en/media/HDR06-complete.pdf  page 45)

Just £15 can provide one person with access to safe water.
(WASHCost and WaterAid, 2014)

Lack of water, sanitation and hygiene costs Sub-Saharan African countries more in lost GDP than the entire continent gets in development aid.
(Using percentage estimate from UNDP: Human Development Report, 2006)

In 2014/2015, we reached 2 million people with safe water and 3.1 million people with sanitation.
(Average figure, WaterAid 2015)

Nearly half the people who gained access to water between 1990 and 2010 live in India and China.
(WHO/UNICEF Joint Monitoring Programme for Water Supply and Sanitation 2012)

One study estimates that funding for water and sanitation infrastructure is lacking by US$115 million a year in Sub-Saharan countries. (Africa Infrastructure Country Diagnostic (AICD) Study), while WHO gives a global estimate of $535 billion needed in new capital investment to reach universal access, or $26.75 billion per year between 2010 and 2030. (Hutton, WHO, 2012)

Since 1981 we have reached 23 million people with safe water.
(WaterAid, 2015)