| dc.description.abstract | The development of Medan City has led to an increase in population, increased
activity, changes in the use of water catchment land into residential land, one of
which is around the Terjun Landfill area, Medan Marelan Sub-district. Settlement,
one of which is around the Terjun landfill area, Medan Marelan sub-district. This
is directly proportional to the increasing need for clean water and the risk of water
pollution including groundwater (dug wells) from leachate produced by the landfill.
This study aims to determine the vulnerability of groundwater pollution using the
APLIS method (Altitud, Pendiente, Litologia, Infiltration Prefencial, Seule), to
determine the actual occurrence of groundwater pollution using the Pollution Index
(IP) method, and the factors (landfill distance and groundwater depth) that most
affect groundwater pollution in the Terjun landfill area, Medan Marelan.
Groundwater vulnerability zonation using the APLIS Method resulted in a low
vulnerability class of 35.81% with a classification of >20-40%. Samples of
community shallow dug well water around Terjun landfill were taken and then
tested in the laboratory to determine the quality of community shallow dug well
water with test parameters Total Suspended Solids (TSS), Total Dissolved Solids
(TDS), and Mercury (Hg). Laboratory test results of dug well water samples for
TSS, TDS, and Hg parameters show that all 13 dug well water samples meet the
quality standards where each quality standard based on PP RI No. 22 of 2021 and
Permenkes No. 32 of 2017 is TSS = 40 mg/l; TDS = 1000 mg/l; Hg = 0.001 mg/l.
Furthermore, the calculation of water quality status is carried out using the
Pollution Index (IP) method, the results of the IP calculation are 0.33678 where
this value is included in the category of meeting quality standards (0 < IP < 1). The
results of linear multiple regression analysis show how much influence the distance
of landfill and the depth of the groundwater table has on total suspended solids
(TSS), total dissolved solids (TDS), and mercury (Hg) as shown respectively in the
R square value where the R square value of TSS = 0.275, the R square value of TDS
= 0.371, and the R square value of Hg = 0.548. From the R square value, it can be
concluded that the distance of the landfill and the depth of the groundwater table
to the dug wells do not greatly affect the groundwater quality in the residential area
around Terjun Landfill. | en_US |
