Analysis of heavy metal Zn and Ni content in well water of residents around putri cempo landfill

Departement of Environmental Science, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Surakarta 57126, Indonesia

^* Corresponding author: siti.rachmawati@staff.uns.ac.id

Abstract

The Putri Cempo Final Processing Site (TPA) in Surakarta has the potential to pollute the surrounding environment due to its open dumping system, which produces leachate containing heavy metals. This study aims to analyze the concentrations of heavy metals zinc (Zn) and nickel (Ni) in monitoring well water around the TPA. Sampling was conducted in March 2025 using Atomic Absorption Spectrophotometry (AAS) testing methods in accordance with SNI standards.he analysis showed that Zn concentration reached 3.2825 mg/L and Ni was 0.1512 mg/L, both exceeding the clean water quality standards set by Government Regulation No. 82 of 2001 (0.05 mg/L for Zn and 0.02 mg/L for Ni).. This condition is compounded by environmental parameters such as low pH (3.84) and high ORP (499 mV) further increased metal mobility, posing health and ecological risks. Climate change, particularly increased rainfall and extreme weather, is likely to intensify leachate flow and accelerate heavy metal transport into groundwater. Regular monitoring and remediation technologies such as phytoremediation and adsorption are recommended to reduce contamination.