Alfitra, Maulana (2025) Pemetaan Dan Identifikasi Kualitas Airtanah Dangkal Di Desa Kempas Jaya, Kecamatan Kempas, Kabupaten Indragiri Hilir,provinsi Riau. Other thesis, Universitas Islam Riau.

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Abstract

Kempas Jaya Village is one of the villages located in Kempas District, Indragiri Hilir Regency, Riau Province. This area is a densely populated area so that clean water sources are needed for daily life. The problem of low groundwater quality which causes the groundwater to be yellow to brownish in color is estimated to be due to the presence of soil originating from peat soil in the research area. In addition, there has been no previous research that discusses groundwater problems in the research area so that the knowledge of the surrounding community about groundwater problems is still minimal. The purpose of this study were to determine the distribution and direction of groundwater surface flow, mapping the distribution of groundwater quality using physical and chemical parameters, the feasibility of groundwater quality using physical and chemical parameters, and subsurface geological conditions in the research area. The methods used in this study were field sampling and laboratory analysis. Groundwater sampling was carried out at 15 groundwater stations with 3 comparative data in the form of river water, ditch water, and well water. Subsurface data collection was carried out using a handauger. Based on the results of the physical parameter analysis, it was found that the groundwater was cloudy (20%), yellow (27%), brown (13%), and reddish brown (40%); all groundwater (100%) was tasteless; groundwater that smelled (13%) and (87%) groundwater was odorless; (13%) groundwater had a TDS value of > 500 mg/l and (87%) groundwater had a TDS value of ? 500 mg/l; and (13%) groundwater had a DHL value of > 700 ?S/cm and (87%) groundwater had a DHL value of ? 700 ?S/cm. The results of the chemical parameter analysis showed that the pH value (100%) ranged from 5.68 - 5.97; (13%) groundwater had an Fe value of ? 0.3 mg/l, while (87%) groundwater had an Fe value of > 0.3 mg/l; and (100%) groundwater has COD value > 10 mg/l. The results of subsurface analysis show that the greater the thickness of the peat, the worse the quality of the groundwater color. According to the Regulation of the Minister of Health No. 492/MENKES/PER/IV/2010 and Government Regulation No. 82 of 2001 from all the results of physical and chemical parameters, it can be seen that all groundwater samples (100%) do not meet the standard requirements so that the groundwater is categorized as unfit for drinking. Keywords: Physical-Chemical Quality, Shallow Groundwater, Kempas Jaya, Peat

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