Evaluasi Status Mutu Air Danau Rawapening

Abstract

Increasing type and number of human activities will impact on decreasing quality of water. Therefore, it is necessary to determine the water quality status of Rawapening Lake regularly to ensure that the water quality remains in its natural condition. The purposes of this study were to evaluate the water quality status and class of Rawapening Lake. The survey was done in the lake during dry season for 3 months (July to September 2016). Water sampling conducted in seven locations. The measured variables were all parameters as specified in Government Regulation No. 82 of 2001. To determine the water quality status was using storet methods. Determination of the water class was by comparing the concentration of all parameters with the standard. Observations indicated that the Rawapening Lake water quality status was in heavily polluted. There were eight parameters exceeding the standard i.e. TSS, BOD, COD, total phosphor and total coliform, Cd and Pb, and H2S. Therefore, it is necessary to decrease them through activities such as not throwing rubbish into the lake, lifting biomass of water hyacinth, picking up peat soil sediments, using environmentally friendly fuels, reducing fertilizers and pellet, reforesting critical lands, limiting mining activities, banning waste disposal directly to rivers.

Identifikasi Sektor Ekonomi Unggulan di Daerah Tangkapan Air Danau Rawa Pening

“…DTA merupakan hulu dari sungai-sungai yang mengalir ke Danau Rawa Pening, sehingga pola pemanfaatan lahan dan aktivitas ekonominya akan memengaruhi kualitas, kuantitas dan kontinuitas air yang masuk kedalam danau. Danau Rawa Pening merupakan salah satu danau prioritas yang menghadapi persoalan eutrofikasi, penutupan eceng gondok (Eicchornia crassipes), dan sedimentasi cukup parah (Girsang et al, 2019;Hidayati et al, 2018) serta ketersediaan air (Nugroho, 2017) dan kualitasnya (Aida & Utomo, 2017;Heriza, Sukmono, & Bashit, 2018;Piranti, Rahayu, & Waluyo, 2018). Meskipun eceng gondok dianggap sumber masalah, tetapi ada masyarakat yang menganggap eceng gondok bermanfaat terutama untuk peningkatan pendapatan (Ningsih et al, 2019).…”

Kajian Penilaian Kualitas Air Sungai Bedadung di Kabupaten Jember

“…Keberadaan fosfat pada badan air yang melebihi baku mutu juga berpotensi menurunkan kualitas air Sungai Bedadung, selain kandungan sulfida dan klor. Fosfat dalam bentuk ortofosfat pada badan air berfungsi sebagai komponen makronutrien untuk pertumbuhan plankton (Piranti et al, 2018;Marselina dan Burhanudin, 2018). Konsentrasi fosfat yang tinggi pada badan air memicu terjadinya fenomena ledakan pertumbuhan alga sehingga menurunkan kualitas sumber air.…”

“…Nilai rerata total coliform pada Sungai Bedadung yang melewati wilayah perkotaan Kabupaten Jember pada periode pengamatan tahun 2016-2019. Keberadaan bakteri coliform pada badan air bisa menjadi indikasi keberadaan bakteri patogen seperti E. Coli yang berbahaya bagi kesehatan manusia jika dimanfaatkan sebagai sumber air bersih (Piranti et al, 2018).…”

“…Secara umum metode IKA mempertimbangkan keberadaan bahan pencemar dan baku mutu peruntukannya dan dapat digunakan pada input data majemuk. Adapun beberapa metode IKA yang sudah diaplikasi di beberapa wilayah yaitu Horton Model, National Sanitation Foundation Water Quality Index (NFSWQI), Oregon Water Quality Index (OWQI), Canada Council Ministers of the Environment Water Quality Index (CCMEWQI), dan Global Drinking Water Quality Index (GDWQI) (Lumb et al, 2011;Tallar dan Suen, 2015;Poonam et al, 2015;Hussein dan Ali, 2017;Piranti et al, 2018). CCME WQI menjadi salah satu metode yang memiliki sensitivitas yang relatif baik dalam merefleksikan kondisi kualitas perairan tropis di Indonesia (Saraswati et al, 2014).…”

Bio-concentration of Copper in the Oreochromis mossambicus and Safe Level of Consumption

“…The water sources in Rawapening Lake are from the rainwater, groundwater, and the river flow originating from the nine sub-watersheds (Kementerian Lingkungan Hidup Republik Indonesia, 2011). The activities of the people around the watersheds and Rawapening Lake such as wood industry, plantations, paddy irrigation, household waste disposal, fisheries, and tourism could cause the contamination of heavy metals Copper (Cu) in the lake water (Piranti et al, 2018). Based on the previous research, it was found that the content of heavy metals Cu in the lake water was 2.032 mg/l and the standard quality in Indonesia was 0.02 mg/l (Peraturan Pemerintah, 2001;Hidayah et al, 2012).…”