| dc.description.abstract | Tigaras waters is one area of Lake Toba which is used as a tourist area, ferry
ports and floating net cage aquaculture activities which could effect water quality in
Tigaras. The research to determine the value of the parameter of physic, chemistry,
biology and water quality based on the quality standard PP RI No. 82/2001 on water
quality management and water pollution control. This research is done in June to July
2016. The study used purposive random sampling method. Station used consistend of
the first station (port), the second station (cages), the third station (travel), and fourth
station (control). Value parameter of physics, chemistry and biology, among others
temperature 26oC–29oC, TSS 54-56 mg/l, TDS 25-27,5 mg/l, brightness 180-198 m,
pH 7,2-7,65, DO 5,35-6,45 mg/l, BOD 0,9-2,85 mg/l, COD 2,812-8,90565 mg/l,
nitrate 0,5 mg/l, phosphote 0,19-0,51 mg/l, total coliform 65,9–2505 MPN/100ml.
Water quality based on standard class one and class two is being polluted with
respective value are -25 and -15, while based on standard class three is not polluted or
meet quality standard value. | en_US |
