The study areaG1 is located at 11.1075°N 77.3398°E on the banks of the Noyyal River. It has an average elevation of 295 metres (967 feet) and covers an area of 159.6 km2 (61.6 sq mi). The total studyG2 area is 5186.42 sq.km.G3
The climate is tropical with the mean maximum and minimum temperatures varying between 35 to 22 °C (95 to 72 °F). The summer occurs during the months March, April and May when the weather is hot and dry. The maximum temperature during the summer months will be around 35 °C (95 °F) and the minimum temperature will be around 29 °C (84 °F). The monsoon months are the months of June, July and August. These months are mainly characterized by mild showers and a reduced temperature. The post-monsoon or winter months are September, October, November, December and January. These months generally G4 have a cool climate and temperatures rarely rise beyond a maximum of around 29 °C (84 °F). The minimum temperature during this season will be around 24 °C (75 °F).
The region is covered by red soil(50%), black soil (46.4%), other soil (3.6%). Ordinary well is a major source of irrigation compared to cannel irrigation. G5 The water table is available at the depth of 7m to 25m.
Materials and methods
In this study, a total of 15 samples areG6 collected randomly in Tirupur zone during November 2017 and analysed for the water quality parameters such as Electrical conductivity, pH, Total hardness, Ca, Mg, Cl, Cr, Fe, No3-, So4, Total dissolved solids and Total suspended solids by using standard procedure.The samples were collected in one-litre G7 high-density polyethene (HDPE)G8 bottle pre-washed with dilute hydrochloric acid and rinsed two or three times with the sample. The samples were stored at 4 degrees prior to analysis in the laboratory. The parameters are tabulated belowG9 . The location for which the samples are collected is shown in Fig 1.G10