• Dr.K.Ramesh
• Mss.R.Asha
• Dr.E.Jamuna

: Groundwater is one of the most important natural resource available to humans, it is, therefore, essential to manage and preserve it. It is a major source of fresh drinking water in both the rural and urban area. Many Industries are present near Bhavani river in Mettupalayam in Coimbatore district, Tamil Nadu which is the source for river water pollution. The study emphasizes evaluating groundwater and surface water quality for drinking and irrigation purposes during both pre-monsoon and post-monsoon in Mettupalayam taluk. Samples were collected during pre-monsoon and post-monsoon period; 33 samples were collected which includes 3 river water samples and 30 groundwater samples from bore well. Groundwater sample was collected in 15 villages each comprising of 2 sample points fixed randomly. The groundwater quality information maps of the entire study area have been prepared using GIS spatial interpolation technique for all the above parameters. The chemical relationships in piper diagram identify the mixed CaMgCl and and few samples falls in NaCl types and CaHCO3 types. High TDS and Hardness in few places identify the unsuitability of groundwater for drinking and irrigaiton. The most effectve irrigation indices are USSL diagram, Wilcox diagram, Residual sodium carbonate, Magnesium hazard, Kelly ratio and salinity hazard to evaluate the quality of groundwater for irrigation purpose. Based on indices majority of groundwater samples were suitable for irrigation and some sample locaiton s are unfit for irrigation use due to anthropogenic activities. Analysis of parameter concentration was carried out and spatial distribution in the area was prepared using ArcGIS and variation in the area was found. In general, the concentration is higher in Tholampalayam and Chikkaramapalayam village. Based on the study, it was found that most of the samples are suitable for irrigation purposes.

Groundwater and river water- Spatial variation-domestic and Irrigation water quality.

"Suitability of Groundwater and River water for Irrigation and Domestic Purposes in Mettupalayam Taluk, Coimbatore District, Tamil Nadu", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 11, page no.a22-a32, November-2022, Available :http://www.jetir.org/papers/JETIR2211005.pdf

"Suitability of Groundwater and River water for Irrigation and Domestic Purposes in Mettupalayam Taluk, Coimbatore District, Tamil Nadu", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 11, page no. ppa22-a32, November-2022, Available at : http://www.jetir.org/papers/JETIR2211005.pdf