AbstrakDKI Jakarta dilintasi oleh 13 sungai besar dan beberapa sungai kecil serta 40 situ tersebar di 5 wilayah kota yang sangat potensial sebagai air permukaan untuk menunjang kehidupan manusia. Dengan pertumbuhan penduduk DKI yang pesat dan perkembangan pemanfaatannya, ada kecenderungan terjadinya perubahan pada kondisi dan kualitas air sungai dan situ di DKI Jakarta. Kepadatan penduduk dapat mempengaruhi pencemaran lingkungan sungai dan situ. Hal ini dikaitkan dengan tingkat kesadaran penduduk dalam memelihara lingkungan yang sehat dan bersih. Pendugaan pencemaran perairan dapat dilakukan dengan melihat pengaruh polutan terhadap kehidupan organisme perairan dan lingkungannya. Unit penduga adanya pencemar tersebut diklasifikasikan dalam parameter fisika, kimia dan biologi. Dalam menetapkan kualitas air, parameter-parameter tersebut sebaiknya tidak berdiri sendiri tapi dapat ditrasformasikan dalam suatu nilai tunggal yang mewakili disebut sebagai Indeks Kualitas Air. Hasil perhitungan terhadap nilai IKA menunjukkan bahwa 83 % sungai dan 79 % situ yang ada di DKI Jakarta ada dalam kategori buruk. Hal ini disebabkan tidak terpeliharanya sungai dan situ dengan baik, kurangnya kesadaran masyarakat dan pemerintah dalam upaya memelihara sungai dan situ. AbstractWater Quality of Rivers and Ponds on DKI Jakarta. Thirteen big rivers, some small rivers, and 40 ponds spread over districts at Jakarta city are potential to support human being life. As the population is growing and the usage of stream water is increasing, the condition and quality of rivers and ponds are changing. Crowd housing can affect rivers and ponds pollution, as the people awareness about clean and healthy environment is less. Stream water pollution assessment can be done by counting the effect of pollutant to life of stream water organisms. This assessment unit could be classified into physics, chemical, and biological parameter. To know the water quality, those parameters are transformed into one single value, that is Water Quality Index. The calculation result of Water Quality Index value shows that 83 % of rivers and 79 % of ponds are bad. This condition is caused by less people and government awareness to maintain rivers and ponds. Keywords: rivers and ponds pollution, water quality index PendahuluanAir merupakan sumberdaya alam yang mempunyai fungsi sangat penting bagi kehidupan manusia dan mahluk hidup lainnya serta sebagai modal dasar dalam pembangunan. Dengan perannya yang sangat penting, air akan mempengaruhi dan dipengaruhi oleh kondisi/komponen lainnya. Pemanfaatan air untuk menunjang seluruh kehidupan manusia jika tidak dibarengi dengan tindakan bijaksana dalam pengelolaannya akan mengakibatkan kerusakan pada sumberdaya air.Air permukaan yang ada seperti sungai dan situ banyak dimanfaatkan untuk keperluan manusia seperti tempat penampungan air, alat transportasi, mengairi sawah dan keperluan peternakan, keperluan industri, perumahan, sebagai daerah tangkapan air, pengendali banjir, ketersediaan air, irigasi, tempat memelihara ikan dan jug...
Pluit reservoir located at Jl. Raya Pluit Selatan, Penjaringan West Jakarta in area of 80 hectares and water depth <br />ranges ± 2-6 meters. This research aimed to analyze the water quality using the phytoplankton communities <br />structure. To determine water quality condition of Pluit reservoir can be done by using phytoplankton as <br />bioindicator of water pollution. The research was conducted in April up to July 2016 with 11 sampling points, that <br />spread in inlet zone, the middle zone and the outlet zone of the reservoir. The physical and chemical parameters of <br />water quality analysis will compared by Government Regulation No. 82 year 2001 of Water Quality and Water <br />Pollution Control, the result show that DO (0.07-2.7 mg/l), BOD (5.59-67.11mg/l), COD (13.76-275.2mg/l), The <br />values of diversity index H’=0.12 – 3.47, the value of Evenness (E) is 0.39– 0.95, that indicated the diversity of <br />species is low and values of Dominace Index is tend to ~ 0. The water condition classified as moderate or indicate <br />semi-polluted waters.
Escherichia coli bacteria and Total coliform in groundwater are often the leading cause of diarrhea cases. Some of the factors that cause groundwater pollution are the distance of the septic tank to the well, the presence of pollutants near the well, and poor construction. The purpose of this study was to determine the distribution pattern of E. coli and total coliform. The research was conducted in Tanah Sareal District, Bogor City. There are 11 wells monitored. Counting the number of E. coli and total coliform using APHA 9223 A method with Colilert’s IDEXX. The distribution pattern of E. coli bacteria and total coliform in shallow groundwater is supported by Geographic Information System (GIS) software that ArcGIS based on android. The result shows the number of E. coli 1 - >2500 MPN/100 ml and total coliform 3 - >2500 MPN/100 ml. The distribution of E. coli and total coliform toward to direction to the northwest is influenced by the distance of the well from the septic tank, the presence of pollutants, and population density.
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