* Corresponding author. Tel.: +62-89-7272-0606. E-mail address: setyobudi.kurniawan@gmail.com 229 Simposium I Jaringan Perguruan Tinggi untuk Pembangunan Infrastruktur Indonesia, 2016 Groundwater Treatment in Rungkut Sub-District, Surabaya Setyo Budi Kurniawan a *, Ipung Fitri Purwanti a , Bieby Voijant Tangahu a , Harmin Sulistyaning Titah a and Sarwoko Mangkoedihardjo a a Laboratory of Environmental Remediation, Department of Environmental Engineering ITS, Surabaya, Indonesia Abstract Results of Environment agency laboratory test show the Surabaya’s clean water which still meet quality standards by the year 2008 reached 97.5% and decreased to 58.2% in 2009. Rungkut is one of the sub-districts in Surabaya where people fulfill their daily water by using well water or ground water. Nowadays, people feel their well water is not feasible in use for everyday needs anymore. This was due to the decreased quality of well water because the contamination of organic matter. These community services activities try to help Rungkut Sub-District people in meeting their water needs. Efforts will be preceded by a hearing, sampling groundwater at some point, and test the quality of the groundwater. The results of groundwater quality test obtained will be used to create a water treatment unit which can be operated simply by the community. Based on the groundwater quality test obtained, the pilot scale unit of groundwater treatment designed and installed using multiple tray aerator and carbon active filter combination. Multiple tray aerator installed for 3 steps of aeration and the carbon active filter contains 60% (volume by volume) carbon active media. Keywords: Clean Water Treatment; Groundwater quality; Rungkut Sub-District 1. Background Clean water is a vital necessity for mankind. Every day, clean water needed for drinking, cooking, bathing, washing and other purposes. By using clean water, people can avoid some kind of disease. Clean water is also much needed by the industry. Clean water is needed as a raw material by many industries. However, the amount of clean water decreased as pollution increased. Many water pollutions occurred in the neighborhood. Because of too many pollutants, nature loses its ability to restore to its original condition. The loss of the ability of nature is what causes the scarcity of clean water quantity available in nature. Water pollution caused by many factors. Factors that much effect to the pollution are the entry of garbage, organic substances and inorganic substances into water bodies. Contaminated water can cause many problems for mankind. Health problems is the major nuisance that can arise from contaminated water problem. Other problems such as economic and aesthetic problems can also arise due to water contamination. Health problems that often arise due to the use of polluted water are diarrhea and skin diseases. Because of the many disorders that can be caused, the water pollution problems need to be solved soon. Rungkut sub-district is a region located on the east coast of Surabaya. Rungkut sub-district surrounded by Rungkut industrial area. Along with the rapid development of the industry in this region, clean water has always been a problem. Clean water problem much felt by people whose income is insufficient to fulfill clean water from PDAM. Contaminated water are still used by the community for the purpose of bathing, washing and other needs except drinking and cooking. The use of contaminated water can certainly lead to health problem, it can even cause death. Therefore, it is necessary to make a water treatment that is both simple and easy to implement on public. 2. Objective and Advantage Objectives to be achieved was helping communities to apply a simple ground water treatment. The benefit of this activity was to get clean water that meet the health standard requirements. 3. General Research Area Description Rungkut district is a part of Surabaya East region which has an area of ± 21.08 km 2 and divided into six sub-districts, they are Kali Rungkut, Rungkut Kidul, Medokan Ayu, Wonorejo, Penjaringan Sari, and Kedung Baruk. In topography, Rungkut is located at a height of 4.6 meters above sea level with an average rainfall of 189.2 mm per month. According to Surabaya Central Bureau of Statistics (2014), the population of Rungkut District in 2013 reached 111.945 inhabitants with a population density of 5,325 inhabitants / km 2 . The Rungkut District administrative boundaries are mentioned below: North : Mulyorejo District South : Rungkut District East : The Madura Strait