ABSTRAK
Air merupakan salah satu sumber daya alam yang paling penting bagi semuakehidupan di Bumi. Dalam fasilitas industri, air digunakan dalam berbagaikegiatan. Total dikenal sebagai Total E & P Indonesie (TEPI) adalah perusahaanyang beroperasi di Indonesia di sektor energi dan manufaktur kimia, terutamapada industri minyak dan gas. Makalah ini akan mengevaluasi kinerja instalasipengolahaan air terhadap kualitas air yang dihasilkan dan akan dibandingkandengan peraturan air minum di Indonesia (Peraturan Menteri Kesehatan RepublikIndonesia Nomor 736/Menkes/Per/VI/2010 tentang persyaratan kualitas airminum). TEPI memiliki enam Water Treatment Plant (WTP) untuk mendukungair bersih untuk ladang minyak dan gas, kantor, dan perumahan bagi karyawandan ada WTP Gunung Karang, PWT Sepinggan, PWT Handil 2 Base, DWTSenipah, PWT Handil CPA (Central processing area), dan PWT CPU (CentralProcessing Unit). Dari pengamatan di lapangan, pemeliharaan periodik, hasil dariparameter analisis dipelajari (kekeruhan, pH, TDS, Fe, temperatur, residu klorin,bakteri umum, bakteri coliform dan bakteri E.coli) dan wawancara denganoperator dari PWT, bahwa ada tiga PWT dalam kondisi baik (WTP GunungKarang, PWT Sepinggan dan WTP CPU), satu PWT dalam kondisi baik dengancatatan (DWT Senipah) dan dua PWT berada dalam kondisi buruk (WTP CPAdan WTP Handil 2 Base).

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ABSTRACT
Water is one of the most vital natural resources for all life on Earth. In industrialfacilities, water is used in a wide range of activities. Total as known as Total E&PIndonesié (TEPI) is company which operating in Indonesia in energy sector andchemical manufacturing, especially on oil and gas industry. This paper willevaluate the performance of the WTP to the water quality produced and will becompared with the regulation of drinking water in Indonesia (regulation of HealthMinisters of the Republic Indonesia number 736/Menkes/Per/VI/2010 aboutdrinking water quality requirements). TEPI have six Water Treatment Plant(WTP) for supporting clean water for the oil and gas field, office and housing forthe employee. There are WTP Gunung Karang, PWT Sepinggan, PWT Handil 2Base, DWT Senipah, PWT Handil CPA (Central processing Area), and PWT CPU(Central Processing Unit). From observation in the field, the periodicmaintenance, the results of analysis parameters studied (turbidity, pH, TDS, Fe,temperature, residual chlorine, general bacteria, bacteria coliform and bacteriaE.coli) and interviews with operator from PWT, there are three PWT that in agood condition (WTP Gunung Karang, PWT Sepinggan and WTP CPU), onePWT in a good condition with a note (DWT Senipah) and two PWT are in a badcondition (WTP CPA and WTP Handil 2 Base).