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In the present scenario of global warming, the availability of drinking water is the main concern. The problem of water shortage tackled in reliable scientific approaches. Rainwater harvesting is one of the best practices in collecting and storing rainwater. This method is cost-effective in the planning and development of rainwater harvesting facilities in waterscarce areas for future needs. In this paper, a case study of Vardhaman College of Engineering, Hyderabad, in Telangana state has taken to estimate the rooftop rainwater harvesting potential. In this study, In this study to digitize the various types of rooftops, Google Earth Pro is used. The overall potential quantity of rainwater harvestable at the institutional level can be assessed by using ArcGIS. Total water demand for the study area is calculated considering the existing population. Rainwater harvesting sites are identified and proposed according to the lowest elevation and drainage direction of the study area. The volume of the storage tank is designed based on daily discharge by assuming the length, breadth and height. The results of this study will demonstrate the Applications of Google Earth Pro and GIS in estimating rainwater harvesting potential to tackle the prevailing water shortage in the study area. Rainwater harvesting provides water at the point of demand, minimizes the stress on existing natural resources and also an eco-friendly solution.

Water is an essential element intended for the continued survival of life on the planet earth in which groundwater is the chief sources of drinking and other uses. Groundwater quality will become essentially important in water scarce areas. The study considered is in Uppal Kalan area, which comes under Medchal-Malkajgiri District of Telangana State. The present study carried out to analyse the physicochemical parameters of groundwater quality such as pH, Turbidity, Colour, Total Dissolved Solids (TDS), Conductivity, Dissolved Oxygen (DO), Alkalinity, Total Hardness, Calcium, Magnesium, Fluoride, Potassium, Phosphate, Nitrate, Chloride and Sulphate for 50 sample well locations. The results of Physicochemical analysis are spatially analysed and mapped using Geographic Information System (GIS) interpolation techniques to visualize the groundwater quality status in the study area. Spatial analysis showed that the groundwater is highly contaminated and the majority of quality parameters are not within the BIS Standards of drinking. Even for domestic use proper treatment is necessary as Colour, Conductivity, Total Hardness, Calcium, Magnesium, Fluoride, Phosphate, Nitrate and Sulphate are at higher levels. Hence, the study area has an exceptional concern about groundwater quality and requires periodic pollution monitoring.

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The primary goal of wastewater treatment is to enable municipal and industrial effluents to be disposed of without endangering public health or causing unacceptable ecological damage. With rapid urbanization and industrialization, both the quantity of sewage generation and complexity in its treatment for recycle is increasing. Further, the disposal of untreated sewage is posing lot of threat to groundwater quality. Hence, recycling of wastewater is necessary to prevent groundwater pollution. It also helps in augmenting water conservation. Sewage can be treated to the acceptable quality for its use in many non-potable, industrial and agricultural uses. Treated wastewater recycling helps in addressing the rapidly growing water consumption of many areas of the economy thereby benefiting in environmental rehabilitation. From the perception of public resource, the present study analyzes the suitability of treated wastewater from various units at Amberpet STP in Hyderabad for several designated water uses.