“Human life at its most basic level needs water to survive. It’s tragic that too much of the world does not have access to a sustainable source of water in order to survive, never mind live,” says photographer Sophie Green of her work with Just a Drop, a charity providing access to sustainable clean water solutions in Kenya. Born in the UK and best-known for exploring facets of British culture such as drag racing and horse fairs, Green isn’t an obvious choice for the charity. But Just a Drop approached her because they were drawn to her aesthetic, she says – and, she points out, she’s spent the last two years documenting African culture in Britain.