 It shows favorable economics as compared to diesel pumps, and is free from the need to maintain a regular supply of fuel.The only maintenance problems with PV pumping [are] due to the breakdown of pumps and not the failure of the PV devices.The Solar Water Purifier, developed and manufactured by an Australian company, is a low-maintenance, low operational cost solution that is able to purify large amounts of water, even seawater, to levels better than human consumption standards set by the World Health Organization.