Low-cost technology for water pollution control in developing countries

An estimated 80% of all illnesses in developing countries is in one way or another related to water. In order to alleviate this most serious condition, the United Nations has initiated the "International Water Decade", for which the estimated costs are $600,000 million, a sum which is far beyond any available means. By application of "low-cost technology" this sum could be reduced to $100,000 million which brings the objective within the reach of possibility. Details are given of the design and methods of construction of units which are best suited to the specific requirements and which would be simple, reliable and economical to operate. These can be constructed largely from local materials and by local labor.