INTERPRETASI KUALITAS AIR BAWAH TANAH DI SEKITAR AKTIVITAS USAHA LAUNDRY KELURAHAN TUAH KARYA DENGAN MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI SCHLUMBERGER DAN GEOKIMIA

Abstract

The laundry business on Taman Karya Street produces the disposal of waste containing chemicals surrounding the ground water in that place. This research aims to determine the depth of groundwater, investigating the water quality for consumption using the Schlumberger configuration geoelectric method on two tracks with a length of 100 m. The data obtained in the acquisition process is used to calculate the apparent resistivity value at each measurement point and analyzed quantitatively and qualitatively. The process is continued with inversion using the Software Progress v3.0 application so that the resistivity and layer thickness values can be obtained. The result show that the first track obtains a range of resistivity values ranging from 198.58 Ωm to 252.61 Ωm, and the second track is 9.90 Ωm to 1209.97 Ωm. There are five sample points from each of the laundry wells and residents' wells. The underground water sample is tested such as pH, TDS, conductivity, salinity, and turbidity. The results show that the underground water around the research area cannot be consumed by the people who live in that area, based on the Regulation of the Minister of Health of the Republic of Indonesia. The data describe that underground water samples exceed the standard quality in which the pH is 6.5 or acidic. However the TDS and turbidity parameters still fulfill with the quality standard.