If you’re a city slicker, chances are you get your water from a tap, but rural and township dwellers are increasingly using tanks to harvest rain. Water tank sales have been stellar. Figures supplied by the industry body, the Association of Rotational Moulders of Southern Africa, show that growth in 2018 was 28.7%. Demand has doubled in the past several years, from 16 401 tonnes in 2010 to 32 000 tonnes last year. Market leader Jojo currently sells 1 000 tanks a day, and its annual turnover is more than R600 million. It has supplied two million of its tanks mostly in rural areas. It is not strange to now visit a company of a friend's house and find rainwater or water tanks on the premises. Some are integrated into the design of the building and others are very visible to the eye. In this week’s edition of the entrepreneurial edge, we speak to a water tank manufacturer about their business.