ANALISIS KUALITATIF BAKTERI KOLIFORM PADA DEPO AIR MINUM ISI ULANG DI KOTA SINGARAJA BALI

This work aimed at finding out the quality of refilled drinking water at some shops in Singaraja in terms of bacteriology, getting information about the sources of the crude water used, and the drinking water processing procedures followed in the shops. The samples of the refilled drinking water were taken from three shops, i.e, at Jl.A.Yani (Elita), Satelit (Tirta Alam) and Sukasada (Sinta). The test of availability of Coliform bacteria was done by using lactose broth nine tubes (series3-3-3) with 9 ml each tube and using Durham tube in inverse position. The first three tube series were filled with 10 ml water sample, the second with 1 ml water sample and the third with 0,1 ml water sample. The analysis coliform bacteria in the laboratory shows that the refilled drinking water from the the three shops did not contain Coliform bacteria (MPN Coliform/100 cc of sample =0) and MPN index <3. The sources of the crude water used varied. The two shops used water from tapped water (Eiita, Sinta) and the other one used water from Sangga Langit (Tirta Alam). The two shops used the mixture of ultra violet/UV and ozone (Elita, Tirta AJam) whereas the other shop only used ultraviolet/UV (Sinta). This reasearch to prove the refilled drinking water at some shops in Singaraja Bali are meet the standar qualification of Pennenkes No. 416/Menkes/Per/IX/1990 and Dirjen POM Nomor: 037267/8/SK/Vll/89. Keywords: Refilled drinking water, Coliform bacteria