Reclaimed wastewater can be considered as additional water resources and its planned reuse for lower grade purposes (other than drinking) will result in large saving of potable water supplies. Polluted water has to be cleaned up immediately by a suitable natural ecological system. In this paper, research inputs on water supply and wastewater treatment systems by using eco bio-construction (EBC) material technology have been presented. EBC constructed households, industries and farms are efficient for natural cleaning of discharged effluents according to environmental standards for the design period of ten years. EBC materials are obtained from volcanic resource called volcanic ashes. They are highly porous in nature. In India, porous rock-soil materials blasted from various kinds of Himalayan rocks and other geological structures are the common sources of EBC material. It is the main ingredient in EBC material technology. EBC materials cleanup water through coexistence with microorganisms called aerobic microbiological process. This natural clean up systems using aerobic microbiological process are effective and efficient for wastewater treatment. Aerobic bacteria are a kind of grass bacillus taken from sea bottom and mountains. They are safe microorganisms with a determined DNA sequence. In porous biomaterials, mixture of this effective aerobic bacteria and feed are sprayed and get sealed. Such aerobic bacteria propagate and function as cleanup mechanisms by fermentation. During the cleaning process, aerobic bacteria come into contact with water. Fermentation process occurs in porous media and bacteria start propagation and go out of media. The bacteria degrade organic matter and convert into carbon dioxide and water and thus cleans up sewage water. Since, feed (that is food) for the bacteria are already enclosed, its effectiveness and efficiency is constantly achieved. EBC materials are made up of paste mixture containing volcanic porous stones or ashes, strong alkaline cement, appropriate quantity of water and effective bacteria sealed in a live and propagation state. Volcanic stones are rich in minerals and their fine porous structure is optimal for habitation of microorganisms. EBC material concrete technology made from a kind of fermented-soybeans bacillus which can be simulated from the sources of aerobic bacteria grow in mulch made from leaves in nature. These bacteria are viable in air and water. It degrades e.coli and anaerobic putrefactive bacteria thus sanitizing the environment. EBC microbes kill mosquito larva, which is of medical importance. By getting rid of mosquito larva, it can be used for controlling communicable diseases. This paper has provided overview of this technology applied in water supply and wastewater treatment projects. Such projects investigated are namely domestic sewerage treatment systems. storm sewerage systems, combined sewerage systems, industrial sewerage systems, water channels, constructed wetlands and public sewers, river channels, industrial wastewater sewers, constructed wetlands, wastewater treatment systems, sewage farms, pearl and fish farms and other ocean constructions. EBC material technology has also been applied to water purification systems. Wastewater quality has been achieved in such a way that aquatic vegetation can grow and fish can inhabitant in it. The EBC material structures works on the principle of "natural way of cleaning water" by absorbing pollutants and removing bad odor.
EBC technological projects have an effective working life of ten seven years in running water and have been successfully tested in various construction projects for the purification of industrial wastewater and polluted water bodies. These remove total dissolved solids (TDS), chemical oxygen demand (COD) suspended particulate matter (TSS), organic pollutants, color and odor, biochemical oxygen demand and chemical oxygen demand, nitrogen and phosphorus and bad odor from water and kill mosquito larvae. EBC management practices have been investigated in open drains. It is has been reported that there is a drastic reduction in the content of total suspended solids (TSS) and chemical oxygen demand (COD). Treatment of sewage using this construction material can prevent pollution. It is a one-time investment. It can cut off 40-45 % power consumption and 55-60% cost of maintenance (COM) compared to other conventional wastewater treatments plants. There were EBC material structures laid down for about 500 meters in open drain. Samples have been collected and their results are very much a satisfactory. Such results are (1) killing of larval mosquitoes to considerable extent, (ii) 70% rate of reduction of Total suspended solids, nitrates and phosphates (iii) total detention time (iv) removal of color and foul smell to an extent of 90%. EBC materials structures could be used in house sewers. The results of performance tests undertaken in various wastewater supply and sanitation projects are provided in this research paper. This eco-friendly technology has been evaluated for its performance with a particular reference to techno-commercial, economical and environmental aspects. The construction method is cost effective, durable and efficient. It is recommended that EBC material technology can be used in water supply and wastewater treatment construction projects and thus the reclaimed wastewater can be used as additional water resources for sustainable water development.