Rainwater Quality Monitoring as an Air Pollution Evaluation Strategy in Urban and Industrial Areas

Wetri  Febrina; Nuryasin  Abdillah

doi:10.36378/internationalconferenceuniks.v3i1.4811

Wetri Febrina Institut Teknologi dan Bisnis Riau Pesisir Dumai
Nuryasin Abdillah Institut Teknologi dan Bisnis Riau Pesisir Dumai

DOI: https://doi.org/10.36378/internationalconferenceuniks.v3i1.4811

Keywords: rainwater quality, acid rain, air pollution, contaminants, industry.

Abstract

This study aims to evaluate rainwater quality as an indicator of atmospheric pollution in Dumai City, Indonesia. Rainwater samples were collected from seven kecamatan during September 2024 and analyzed for pH, total dissolved solids (TDS), turbidity, total coliform, nitrates (NO₃⁻), nitrites (NO₂⁻), hexavalent chromium (Cr⁶⁺), iron (Fe), and manganese (Mn). The results showed that the pH value in certain locations, especially Kecamatan Bukit Kapur (pH = 5.0), dropped below the neutral threshold, indicating the presence of acid rain. Some heavy metal concentrations, as well as total coliform levels, exceed generally accepted environmental reference values. These findings suggest that emissions from industrial and urban activities significantly contribute to atmospheric pollution. Rainwater quality monitoring thus provides a valuable approach to assessing the impact of air pollution in densely populated and industrial zones.

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