• Dr. K.M. SENTHIL KUMAR

This paper highlights the use of wastewater for irrigation purposes on groundwater quality and its ultimate effects on human health for the local community in Salem, Tamil Nadu. Field study was conducted in Virapandi village, Salem and quality parameters like pH, EC, SAR, RSC, TDS, heavy metals (Mn, Ni, Cr, Pb, Cu, Co, Fe, Zn) and biological parameters like Total Coliform and Faecal Coliform (E-Coli) were observed in groundwater samples. Results of the study revealed that the untreated wastewater application raises the values of EC, TDS, SAR and RSC compared with the National Environmental Quality Standards (NEQS). These parameters not only degrade the soil structure but also contaminate the groundwater, causing severe health hazards to the local community. As far as heavy metals are concerned, only the concentration Ni, Cr and Pb in the wastewater treated soils found in permissible range. Use of wastewater by mixing with fresh water to keep the environment healthy was suggested, if available. KEYWORDS: Wastewater, Groundwater, Quality, Environment, Health Impact

" EXTERNALITY OF WASTEWATER IRRIGATION ON FARMERS OF SALEM DISTRICT.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.266-273, June 2019, Available :http://www.jetir.org/papers/JETIR1906W35.pdf

" EXTERNALITY OF WASTEWATER IRRIGATION ON FARMERS OF SALEM DISTRICT.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp266-273, June 2019, Available at : http://www.jetir.org/papers/JETIR1906W35.pdf