e-ISSN 2231-8542
ISSN 1511-3701

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Storm Runoff Pollution from a Residential Catchment in Miri, Sarawak

Ho, C. L. I. and Choo, B. Q.

Pertanika Journal of Tropical Agricultural Science, Volume 22, Issue 2, July 2014

Keywords: Storm runoff, residential catchment, NPS pollutant

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In this paper, stormwater runoff from a residential catchment located in Miri, Sarawak, was characterized to determine the pollutant concentrations and loading. The observed average event mean concentrations were 116 mg/L for TSS, 115 mg/L for COD, 1.5 mg/L for NH3-N, and 0.23 mg/L for Pb. Based on Interim National Water Quality Standards (INWQS) for Malaysia, the average event mean concentration, EMC value for TSS exceeded class II (50 mg/L), exceeded class V (>100 mg/L) for COD, and exceeded class III (0.9 mg/L) for NH3-N. All four water quality parameters exhibited first flush characteristic but to varying magnitude which was influenced by the storm characteristics.

ISSN 1511-3701

e-ISSN 2231-8542

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