@incollection{, 01E2F3C6AB2132FABB00E5319F41C3AD , author={{MohemmadRafi.K} and {R.G.M.Engg.College(Autonomous),Nandyal}}, journal={{Global Journal of Researches in Engineering}}, journal={{GJRE}}2249-45960975-586110.34257/gjre, address={Cambridge, United States}, publisher={Global Journals Organisation}1172129 } @book{b0, , title={{International Reference Centre for Community Water Supply and Sanitation}} , year={1986} } @book{b1, , title={{Interwater Directory of Sources of Information and Documentation on Community Water Supply and Sanitation (ref TD 327 I58)}} } @book{b2, , title={{Groundwater quality in rural areas of western Africa}} , author={{ Langenegger }} , year={1987} , address={Abidjan, Ivory Coast} World Bank Regional Water and Sanitation Group } @incollection{b3, , title={{The pollution hazard to village water supplies in eastern Botswana}} , author={{ WJLewis } and { JLFarr } and { SS DFoster }} , booktitle={{Proceedings of the Institute of Civel Engineers. Part2}} the Institute of Civel Engineers. Part2 , year={1980b} 69 } @incollection{b4, , title={{Arsenic poisoning in groundwaterhealthrisk and geochemical sources in Bangladesh}} , author={{ HMAnawara } and { JAkaib } and { KM GMostofac } and { SSafiullahd } and { SMTareqd }} , journal={{Environ.Int}} 27 , year={2002} } @incollection{b5, , booktitle={{Report on UN Conf. on Environ. &Development, A/CONF. 151/26}} , year={1992} 1 277 } @incollection{b6, , title={{Traceelements in drinking and groundwater samples in Southern Nigeria}} , author={{ OIWho Asubiojo } and { NANkono } and { OAOgunsua } and { AFOluwole } and { NIWard } and { OAAkanle } and { NMSpyrou } and { BKot } and { RBaranowski } and { ARybak }} , booktitle={{Guidelines for drinking water quality}} , year={1996. 1997. 2000} 231 429 , note={Sci.otal Environ} } @incollection{b7, , title={{Metal contamination in ground water of Korangi Industrial Area}} , author={{ SNMahmood } and { SNaeem } and { ISiddiqui } and { FAKhan }} , journal={{Journal of Chemical Society. Pakistan}} 20 125 , year={1998} } @incollection{b8, , title={{Trace metal levels in drinking water on Viti Levu, Fiji Islands}} , author={{ JCMiller } and { JNMiller } and { Chichester } and { SSingh1 } and { LMMosley }} , journal={{S. Pac. J. Nat. Sci}} 21 , year={1988. 2003} , note={Statistics for analytical chemistry, Ellis Horwood Limited} } @incollection{b9, , title={{Chemical analysis of drinking water samples from Yozgat}} , author={{ MSoylak } and { FArmagan Aydin } and { SSaracoglu } and { LElci } and { MDogan }} , journal={{Turkey. Polish Journal of Environmental Studies}} 11 2 , year={2002a} } @incollection{b10, , title={{Monitoring trace metal levels in Yozgat-Turkey: Copper,iron, nickel, cobalt, lead, cadmium, manganese and chromiumlevels in stream sediments}} , author={{ MSoylak } and { UDivrikli } and { SSaracoglu } and { LElci }} , journal={{Polish Journal of Environmental Studies}} 11 47 , year={2002} } @incollection{b11, , title={{Chemical contaminants in drinking water. Technical fast sheet on microbes}} , author={{ WStumm } and { JJMorgan }} EPA 816-03-016 , journal={{Envieonmental Protection Agency (USEPA)}} , year={1996. 2003} , publisher={Wiley-Interscience Publication} , note={Aquatic Chemistry} } @incollection{b12, , title={{Guidelines for drinking water quality}} WHO/SDE/WSH 03. 04 , journal={{World Health Organization}} , year={2003} , note={Geneva.} } @incollection{b13, , title={{Trace metal levels in drinking water on Viti Levu, Fiji Islands}} , author={{ JCMiller } and { JNMiller } and { Chichester } and { SSingh1 } and { LMMosley }} , journal={{South Pacific Journal of Natural Science(S. Pac. J. Nat. Sci)}} 21 , year={1988. 2003} , note={Statistics for analytical chemistry, Ellis Horwood Limited} }