Waterborne diseases are the leading cause of child mortality and cause stress and added expenses for families and government-run healthcare centers. Though there are water filters on the Tanzanian market, they have some major limitations. Locally-made filters do not safely filter drinking water, while higher-quality filters made abroad are difficult for local customers to maintain and repair.
These filters are also not customized to local environments and are not able to combat all of these issues; this becomes a problem because there are places where the water contains excessive fluoride or heavy metals and is turbid. In addition, purification systems are often expensive and local people cannot afford to purchase an entire one, though they can afford to purchase drinking water if it is cheap and easily available within their community.