Recently there have been attempts to involve the private sector, not only in selling spares and handpump repairs, but also in local pump sales and installation. This is called the "BlueZone" approach where a handpump dealer has its own region to take care of. Due to economics of scale, this would raise a more interesting business case and keep the handpump dealer interested to maintain this service while the communities have a reliable source of water with a local back-up. Unfortunately there are no simple one-fit-all solution on the horizon for sub-Saharan Africa, which experiences these problems most acutely.