Abstract:
Water is an essential need for earth life including human, animal and plant. Study area located at
Toro Jaya Village that has problem with degradation of surface water quality. The purpose of
study is to investigate groundwater (aquifer) depth and study the quality of groundwater by
groundwater chemistry. Vertical Electrical Sounding (VES) was conducted by using GEOCIST
equipment. The result shown resistivity value of aquifer ranging 0,34 – 0,9 Ωm and aquiclude (clay
layer) has resistivity value ranging 1,67 – 7 Ωm. Aquifer of study area consist of unconfined
aquifer and confined aquifer. The depth of confined aquifer ranging from 3 to 7 m below surface.
Quality of groundwater represented by some parameters like pH, TDS, Cl-, SO4
2-, Mn and Fe. All
parameters shown that value and concentration is below threshold based on Minister of Health
Regulation (PERMENKES) except Fe. Concentration of Fe at study area is 0,71 up to 0,94 ppm but
the threshold of Fe concentration is 0,3 ppm. Nevertheless, quality of groundwater at study area
can be conclude as good quality.
