IMPROVING TREND OF GROUND WATER QUALITY OF NOYYAL RIVER BASIN IN TIRUPPUR DISTRICT

The ground water quality reports of various Government agencies after the year 2000 and the value observed by the Research scholar in Noyyal River basin in Tiruppur district were discussed in this paper. Nowadays, the available surface water is not fulfilling the needs of the people. Hence they are going for the subsurface water. The process is used for industrial or domestic purposes to manage waste and or to produce valuable end products. Noyyal River basin of Tiruppur is known for water pollution from Textile dyeing bleaching and printing units are operating in and around Tiruppur District. The Noyyal River Ayacutters Association, association of affected farmers and in the association has filed several PIL in the Honble Madras High court for the past two decades and the Honble Madras High Court and Honble Supreme Court of India passed various orders to compensate the affected farmers and to curtail the environmental pollution from the textile dyeing units in Tiruppur cluster including the order of complete closure of all dyeing units during Jan 2011. TNPCB, Govt of Tamilnadu and Dyers association of Tiruppur has formulated various projects for constructing individual Effluent Treatment Plant (IETP) and constructing Common Effluent Treatment Plant (CETPs) with Zero Liquid Discharge Scheme. The Loss of Ecology Authority (LoEA) with the assistance of Anna University has made a ground water quality study of the basin in the year 2003 for awarding compensation to the affected farmers and the Central Ground Water Board (CGWB) has made a study in the basin in the year 2012 and 2016. The TNPCB is also continuously monitoring Noyyal water quality by installing online meters in River from the year 2014 onwards. The research scholar has made study in the area 2015, 2016 and 2017. Comparative analysis of the various reports and study indicates that there is a improvement in quality of ground water from the base line values in the year 2003 in terms of Total Dissolve Solids (TDS), a parameter generally used for describing pollution level by textile dyeing units.