Water Quality Assessment of Cimanuk River in West Java Using Pollution Index

. Cimanuk river is one of the seven rivers in West Java. Cimanuk river pollution is indicated to have suffered as a result of the activity of domestic waste, industrial and agricultural uncontrolled in the riparian area of Cimanuk river. This research aims to analize water quality of Cimanuk river based on water quality standard on Government Regulation of Republic of Indonesia (IDN), Regulation of the Governor of West Java (WJ), Enviromental of United Enviromental Quality Standard (EQS), and Department of Environment (DOE). This research used pollution index method. The result is water quality of Cimanuk river not meet water quality standard where the TSS (94.85±84,60 mg/L), BOD (9.61±3.16 mg/L), COD (37.69±14.01 mg/L), DO (5.12±1.22 mg/L), NH3N (0.25±0.24 mg/L). Degradation of water quality of Cimanuk river from upstream to downstream marked by increased pollution index value annually. Pollution index of Cimanuk river ranging from 1.25 to 20.31. Water quality status of Cimanuk river has been from lightly polluted to heavilypolluted.


Introduction
River is a water resources which is utilized for the life of humans and other living beings [1]. Therefore, river is unseparated from community activities in the riparian area. Community activities in the riparian area as domestic, agriculture, and industry will improve solid and liquid waste disposal. The waste disposal activities uncontrolled properly will have a negative impact on the water quality of river, resulting in water pollution ofriver.
Cimanuk river is one of the seven rivers in West Java. Some of rivers in West Java liked Citarum river [2,3] . Cilamaya river [3], Cileungsi river [3,4] has been polluted. Whereas, the rivers in West Java is widely used as a water source for the raw material Regional Drinking Water Company (PDAM) and the public.
Water pollution of river is an important issue that needs serious attention from various parties, including academics, community and stakeholders [5]. Based on the problems,

Materials and Methods
This research aims to analize Cimanuk river water quality and assessment of water quality status of the river Cimanuk use pollution index method

Results and Discussions
Cimanuk river is one of the seven rivers in West Java with rainfall 1500-3000 mm/year and 347 697 ha watershed area. Cimanuk watershed is divided into three (3) Table 2.
Based on Table 3. Parameters Temperature and pH meet water quality standard ( Table  1) where Temperature (from 22.00 to 31.70 °C) and pH (from 7 to 9). Parameter sun met water quality standard where TSS (from 18.00 to 307.33 mg/L), BOD (from 6.67 to 16.67 mg/L), COD (from 26.00 to 71.00 mg/L), DO (from 2.13 to 6.98 mg/L), NH3N (from 0.06 to 0.87 mg/L). Degradation of water quality of Cimanuk river based on physicochemical parameters is identified cause domestic waste, agriculture, hospitals and industries uncontrolled at the riparian area of Cimanuk river.  Chemical pH -6-9 6-9 6.5-8.5 6.5-8.5 5.5-8.5 6.5-8.5 6.5-8. The highest of pollution index of Cimanuk river is 20.31 in Sukaregang site has been heavily polluted. This results support previous level research stating that Cimanuk river has been polluted [3,4]. Water pollution of river occurs is influenced by various factors, such as: population growth, changes in land use, waste disposal into the river uncontrolled, and community activity in the riparian area [15]. Water quality assessment of Cimanuk river is carried out as an effort to water quality management and water pollution control Cimanuk river. Cimanuk river so that can be harnessed and used according to their distribution.

Conclusion
Water quality of Cimanuk river unmeeted water quality standard on Government Regulation of Republic of Indonesia (IDN), Regulation of the Governor of West Java (WJ), World Health Organization (WHO), Enviromental Standard of United Kingdom (UK), Environmental Protection Agency (EPA), Enviromental Quality Standard (EQS), and Department of Environment (DOE). Pollution index of Cimanuk river ranging from 1,25 to 20,31. Water quality status of Cimanuk river has been from lightly polluted to heavilypolluted.