Ground and surface water quality assessment of Palladam Taluk using Geographical Information System and Modified National Sanitation Foundation -Water Quality Index

In this work, the assessment of surface and ground water quality of Palladam Taluk, Tiruppur, district, Tamil Nadu, India were carried out using Geographical Information System (GIS) and Modified National Sanitation Foundation -Water Quality Index (MNSF-WQI). Four samples from surface and twenty seven samples from ground water sources were taken from Palladam Taluk, Tiruppur District. In the current study, the surface and ground water samples were analysed for temperature, pH, dissolved oxygen (DO), electrical conductivity (EC), biological oxygen demand (BOD), turbidity, total dissolved solids (TDS), total hardness (TH), faecal coliforms (FC), total phosphate (TP), total nitrate (TN), chlorides (Cl-), sodium (Na+) and fluoride (F-) ions to investigate the suitability of surface and ground water for drinking and agricultural purposes through Geographic information system (GIS) and modified national sanitation foundation water quality index (MNSF-WQI) technique. The concentrations of TH, TDS, Cl- and Na+ were observed to be above the desirable limit of World Health Organization (WHO) guidelines and Bureau of Indian Standards (BIS). whereas F-, BOD, DO, EC, TP, TN, FC and temperature were within the acceptable limits. The GIS-based WQI map analysis indicated that 45% of the study area having good water quality index and the remaining area showed medium quality water. Dyeing and textile industries in the study area are responsible for deteriorating the quality to medium quality of water which was not appropriate for direct utilization and needed prior treatment. There is no detailed report on assessment of the surface and ground water quality of Palladam Taluk in Tamil Nadu using GIS and MNSF-WQI techniques

Water quality assessment of Kalingarayan canal at Erode district, Tamilnadu (India)

Kalingarayan canal is one of the historically important irrigation water sources in Erode District. Recently the water in the channel being polluted by letting out untreated tannery and textile effluents. It has been decided, therefore, to carryout a study on the quality of water and its pollutional load. The quality of water is determined by examining physicochemical and biological characteristics. In order to present a simple and comprehensive Water Quality Index (WQI) that could be understood by nontechnical experts and common man, the standard NSF method has been adopted. An alternative WQI omitting Temperature, BOD and phosphates has been evaluated and the correlation between NSF index and this new index has been good. The study revealed that the channel water is highly polluted and could be used for irrigation only

ORIENTAL JOURNAL OF CHEMISTRY Investigation of Physico-Chemical and Biological Characteristics of Various Lake Water in Coimbatore District, Tamilnadu, India

ABSTRACT Lake water quality degradation has been apparent for decades, especially in those lakes situated in the vicinity of cities which have anthropogenic activities. The present investigation was carried out for determining the various physico-chemical and biological characteristics of surface water quality of various lakes at Coimbatore, India. The sampling points were selected on the basis of their importance. Six sampling locations namely at Perur Lake (L 1 ), Selvachinthamani Lake (L 2 ), Ukkadam Lake (L 3 ), Kurichi Lake (L 4 ), Valankulam Lake (L 5 ), and Singanallur Lake (L 6 ) were selected and water samples were collected mostly from open wells in and around Coimbatore district. The physico-chemical parameters like Dissolved oxygen, Faecal coliforms, pH, Electrical conductivity, Biochemical oxygen demand, Chemical oxygen demand, Turbidity, Total dissolved solids, Sulphate, Nitrate, Phosphate, Chlorides and Alkalinity were analyzed. The results suggested that, the lake water samples collected from various sites in and around Coimbatore citywere above the limits of WHO standards