ECOTROPHIC • ? (!) , 4 - 53 STUDI KUALITAS AIR SUNGAI TELAGA WiA KABUPATEN KARANGASEM K. G. DA SUSILA 1 , l W, SANDIADNANA 1 , l W. BUDIARSASUA 3 'Dinos PU Kab. Klungkung 3 ,lurusanAgroekoceknoloi Fak.Prtanian Un1v. Udayana :tJurusan Krmia rak. l•flPA Unu.1. Udayan.a ABSTRAC ISSN: 197·5626 TelagaWaaRiverinKarangasemRegencyhasgotwaterdischargefrom2.500to3.500litrepersecond. Theuseoffertilier,rm andhouseholdcesspooldisposal,andchangesofland functioncanreducethe qualityof thewater.Thisrearchisdone inordertoknowthequalityof waterandindexof itspolution.This eseachisdoneinTelagaWaariverforalong10kilometesfromBesakihVillagetoMuncanVillagefrom AugustuntiNovember2011.Theresearchofphysicparachmeter,chemistandmicrobiolobytaking sampleforinsituandeksitueamination arecomparedwiththestandardqualityofBalineseGoverment RegulationNo.8/2007.iletheobseationand interviewaredoneinordertoknowbeha,1ourofthe peopleinpollutingthewate. Resultofthereserchshowsthattheconcentrationof Fecal coli andTotal coliorms reach240.000.000 MPN/100m It is morethan standard qualitoallclaes.TheanalysisofCODi smorethanrstclass waterquality,BODand Fosfat aremorthanthirdclasswaterquality andDOconcœntrationislessan minimum rst las water conentration.The פaluationofPollutionInde(Pl) or f rstclasswaterin all loaionishighpollute.EvaluationsPIofthirandu1hclass standardwaterqualityinMenangaVilage andMuncanVillagaremediumpollutedandfromRendangVillageuntilMuncanVillageishighpolluted inthedeltaoftherier.Watercondition indicatefunctionoTelagaWaawatershedfragriculture,living place,tousm(rafting,restaurant, andvilla),andminingpollutethewater. Baseon theealuationofpollutionindex,all locationsaremedium andhighpolluted.Thatiswhythe govement,enrepreneurs,andthesocieyshould saveRiverTelagaWaabykeeping itlean.Observation ofthewaterqualityisalso shouldbedoneregularly. Key word: wacer quality, plluti11 i11dex, watershed ABST SungaiTelagaaadi Kabupaten Kaangasemmemiliki debitair2.500sampai3.500literperdetik. Penggunaanpupuk pertanian.limbahterakdan rumah Langga serta alih f\ngsi lahanmengancam kondisiaiya.Untukituperludiktahuilalitasairdanindekspencemarannya.ObekenelitianSungai Telagawaasepanang10kmmelaluiDesaBeskih sampaiMuncanpadabulanAgust11s sampaiNopember 2. Penelitian terhadap parameter fisik, kimiadanmikrohiologi denganpengamhilan sampel secara terpadu1tukdibandingkandenganbakumutusesuaiPergubBaliNo.8Tahun2007.Adapunobservasi danwancadilakukanunkmengetahuiprilakupndudukberkontribusimencemariair. Hasil penelitianmenunjukkankondisi airpadakonsentrasi Fecal dan Total coliforms menapai 240.000.000jml/100ml melebibi bakumut1. 1sem\akelas.onsentrasiCODmelebihimutairkelasI, 1100danfosfatmelebhimut11 airkela5I I, konsentrasiDOI-uangdakonsentrasi minimumairelas I. Evaluasiindeks pencemaran (IP)untukperuntukan air kelas I pada seluruh lokasiterccmarberat. EvaluasiIPbakumutuairkelasIIdiDesaMenangaST1tercemarsedangdanST2sampaiST9tercemar herat.EvaluaiIPbamutu airkelasIldanIVpadaDesaMenangaST1danDesaMuncꜳnST9tercemar seda1ganST2sampai ST 8 tercᵫmarbera. Kondisi air mngindikasikanngsidaeral aliran sungai (DAS) Telagwaa berupapertanian, pemukimandanfsilitaswisata(rafing, restorand, penginapan) srtapertamhangagalianCmencemariair. Berasu-kan nilai indeks pencemaaairSungai TelagaWa atercemarberatdansedang.Untukitu pemerintah,pemilikusahad,1nmasyarakathendaknyaberpartisipasimnjagakebersihanDASTelagawaa demikelestariana. Kata kunci: kuulitas air, indeks pencemnran, dnernh nlirnn sungai. 47