,".'.d(P: - Higher Education Commission

of grou.l*at€r conMin {on @ l.!tag. of sd.reloud sloEgc tanls ed Plpine
improp.r disposal or storage oftrast€s md ch€mical spills
12 Drirkilg-wrl.. conltDmrlr.
The contaainalion of wat€! h ! direcl indication of the lclel of polludon of rhe
envircnmoi Airbome pollutan$ after flushine fron dte skies, FiNalF ln'EIIY wshes
ovei the *tolc hud lardsPc be lorc Iding i o $e aquifer' $rem, riv'6 dd laLt
th2r d. the euces ol drinlog_qater supplies lMooiq 19951'
Wa|ei ca b. conrMinated al nwb.r of plecs duitg iB disttibudon dd befot'
@hi.g lo tE @Nm.t. In .Hnr.ing ml.i- $hc polmdallv haados chenicah e
orisiMte.t fron eithq th. lr€atnent chenicals o! coGtdciion mat'riah used in warer
supply systens. Pip.s s.d h waEr supplv sv$ems w be calegonzd either having high
@rivily, swh d ulrin d iNs or low Fstivitv, for exdpL polwi'vl chloride (Pvc)
or nedim-dcNiiy polyerityld. (MDPE) ITmdi!'tr d rL' 2008; Ii'll'n 'r d ' 20021
Brcleria ed oreei. m.ner nav tls li.quendv coat lh€ iFide of pip's viihln lhc
disEibution tsls. Tn E is also a posibilil-! of the otrdne of tun_pollble *at" frcn
th€ suouding .nvionne itto th€ diiribution svnen lT'nnircr 'l !l' 2008;
Gulli.k er tL, 20041 lttrough lealage poinls fauhv sals and joinb etc
lTrDEiftn .t .t , zlxt8i Krn.l.r .r .1.' 20011
Drinling saGr cof,tsni@ts the€foR, is d emersing b$xh thle.| dd fts d'mdds
serios atefiion e.t c@tu1 aci