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Assessment of Groundwater Quality for Drinking Purpose in Rural Areas Surrounding a Defunct Copper Mine

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The suitability of groundwater quality of 22 wells located in the rural areas surrounding Ingaldhal defunct copper mine in Chithradurga district of Karnataka state was assessed for drinking purpose based on the various water quality parameters. Standard methods for physicochemical analysis of groundwater samples were employed. The results of analysis carried out showed the following concentration ranges: pH (7.61-8.34), EC (950-3120μS/cm), TH (410-1400mg/l), TDS (594-1913mg/l), F-(0.15-1.43mg/l), NO3 - (14-162mg/l), HCO3- (417-574mg/l), SO4 2- (68-286mg/l) and Ca2+ (59-150mg/l), Mg2+ (49-250mg/l), Na+(38-290mg/l), K+ (6-58mg/l). The ionic dominance for the major cations and the anions respectively were in the order of Mg2+ >Na+ > Ca2+ > K+ and HCO3 - > Cl- > SO4 2- > NO3 - > Fe- > F- > CO3 -. Most of the samples analyzed were above the Guidelines set by both national (BIS) and international (WHO, 2011) bodies for drinking water. Geographical Information System (GIS) capabilities are used to classify zones with acceptable groundwater quality for drinking purpose. The Gibbs diagrams show that the groundwater samples fall both in the rock and evaporation dominance fields as well as about 18% samples fall outside the defined fields indicating integrated mechanisms for hydrochemistry such as high weathering and low rates of evaporation in addition to input from the anthropogenic activities. According to plots on the piper diagram the groundwater of the Ingaldhal and
surrounding regions consists of 4 hydrochemical types, viz., Ca-Mg-HCO3 type (n=9), Ca-Mg-SO4 (n=6), mixed Ca-Na-HCO3 (n=6) and Na-Cl type (n=1). Assessment of groundwater samples from various parameters indicates that groundwater in most part of the study area is chemically unsuitable for drinking purpose.

Keywords: Groundwater quality; Drinking water; Major ions; Copper mine

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Ketersediaan

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Informasi Detail

Judul Seri

Aquatic Procedia

No. Panggil

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Penerbit

: Elsevier., 2015

Deskripsi Fisik

Aquatic Procedia 4 ( 2015 ) 685 – 692

Bahasa

English

ISBN/ISSN

doi: 10.1016/j.aqpro

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

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