Open AccessWater Quality Assessment Based on National Sanitations Foundation Water Quality Index during Rainy Season in Sibelis and Kemiri Estuaries Tegal City
Author(s) -
D. Ristanto,
A. Ambariyanto,
Budi Yulianto
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/750/1/012013
Subject(s) - estuary , wet season , water quality , environmental science , dry season , pollutant , hydrology (agriculture) , pollution , christian ministry , geography , fishery , ecology , engineering , philosophy , cartography , geotechnical engineering , theology , biology
Sibelis and Kemiri are two important river estuaries in Tegal City, at the northern coast of Central Java. Both estuaries have differences in sources of pollution. Pollutants in Sibelis estuary come from industrial activities, such as the fillet household industry, fishing ports, and domestic pollution. While pollutants of Kemiri estuary come from pond fisheries, agricultural activities, and domestic pollutions. This study aims to assess the water quality of the Sibelis and Kemiri estuaries during the rainy season based on the Water Quality Index of the National Sanitation Foundation. The research was done on January–March 2019 (rainy season) with three sampling stations. Each station was divided into three sites. Eight water quality parameters were measured i.e. temperature, TDS, TSS, pH, BOD 5 , DO, PO 4 and NO 3 . The results showed that there was an increasing trend in the NSF WQI Index in Sibelis from January to March 2019 (48.02 to 51.25) and included in the poor quality category (49.61). Based on the Indonesian Ministry of Environment Standards (2004), six parameters were out of standard, namely TDS, TSS, BOD 5 , DO, PO 4 and NO 3 . While the results of Kemiri estuary show a decreasing trend from January to March 2019 (62.36 to 57.88) and fall into the medium quality category (62.08). Only four parameters have outside standards i.e. TDS, TSS, PO 4 and NO 3 .