Quality, Standards and Testing

The report deals with groundwater table and hydrochemistry of the Kakinada coastal aquifer in East Godavari, Andhra Pradesh.

The report presents a hydrochemical study of the groundwater of Sagar, Madhya Pradesh carried out during 1996 to examine the suitability of water for drinking and irrigation purposes. Under the study, thirty-five water samples representing the shallow groundwater of the region were collected during pre-monsoon and post-monsoon seasons in the month of June and November 1996 respectively.

In this report, the suitability of groundwater of the Doon valley, Dehradun has been demonstrated on the basis of standards prescribed by BIS and WHO. The groundwater quality of the valley has been studied during 1996 to examine the suitability of water for irrigation and drinking purposes. Twelve water samples representing the shallow groundwater of the valley were collected during the pre-monsoon and post-monsoon seasons and analyzed for various constituents, viz. pH, conductance, total dissolved solids, alkalinity, hardness, chloride, sulphate, phosphate, sodium, potassium, calcium and magnesium.

The report attempts to identify sampling sites for water quality monitoring in Narmada basin. The assessment of water quality conditions over a wide area with respect to time and space requires the monitoring of activities to be carried out in a network. The location of a permanent sampling station is probably the most critical factor in a monitoring network which collects water quality data. If the samples collected are not representative of the water mass, the frequency of sampling as well as the mode of data interpretation and presentation becomes inconsequential.

My house is about 20 years old and is located in R T Nagar in Bangalore. In 1990, I had got a borewell dug. The Borewell is about 150 feet deep and has been giving me excellent quality water until about 2 years ago when I started noticing muddy water. The water that is pumped to an overhead tank contains fine particles of mud which tends to settle down in the overhead tank.

The report presents the evaluation of water supply system of Kakinada town in Andhra Pradesh. The neglect of hydrology of a region, while undertaking planning and development works in an urban environment, has serious consequences, the most notable being non-availability of enough potable drinking water to citizens. Water budget studies can be undertaken with all the available records to improve the functioning of such systems and to identify additional alternate resources.

The report looks at groundwater quality and presents the results of the chemical analysis of groundwater samples from openwells & borewells of Belgaum district. The study broadly covers these aspects - (i) groundwater quality evaluation of the district (ii) identification of groundwater quality problems in various parts of district (iii) classification of groundwater, and (iv) application of DRASTIC model for assessing the vulnerability to groundwater pollution.

In the present study, surface and groundwater quality monitoring has been undertaken in parts of Udhampur district in Jammu and Kashmir in order to evaluate its quality for domestic and agricultural purposes. Water sources are polluted by four kinds of substances: traditional organic waste, waste generated from industrial processes, chemical agents of fertilizers & pesticides used for crop production and silt from degraded catchment.

The report attempts to analyze the shallow groundwater table and water quality data for about 20 years pertaining to the Krishna delta. The trend analysis of groundwater level data of shallow wells indicates that in the upper part of the delta, the groundwater table moved up during the period 1979 to 1999. This may be due to the dense canal network in the delta and increase in irrigated area over a period of time.

The report deals with development of reaeration coefficient for Indian condition using mathematical approach and field studies. Of the various constituents, which determine the quality of water, Dissolved Oxygen is the most important parameter indicating the health of a stream. There is a continual replenishment (reaeration) or utilization (deoxygenated) of Dissolved Oxygen due to inflow of waste load at different points in the stream. When a waste load is discharged into a flowing stream, it is mainly subjected to advection, dispersion and reaction kinetics. Waste Load Allocation (WLA) studies provide information to assist in making effective decisions on levels of treatment required for a source or sources of pollutant loads.