Lee, J. Y. Kim, H. J. Han, M. Y. 2024-01-20T17:01:37Z 2024-01-20T17:01:37Z 2021-09-05 2011-06 0273-1223 https://pubs.kist.re.kr/handle/201004/130303 A major obstacle to the promotion of rainwater harvesting is chemical and microbiological concerns. To determine its suitability as an alternative water resource, water quality parameters such as pH, turbidity and metal ion concentrations and counted total coliform, Escherichia coli and heterotrophic bacteria were measured. It was observed that the stored rainwater had a neutral average pH and that its turbidity depended on the duration and intensity of the rainfall event. Metal concentrations were within the permissible limits specified in the Korea drinking water standard. In addition, counts of coliform, E. coli and heterotrophic bacteria were higher in the first flush 5 min after the start of the rainfall event. Principal component analysis and correlation analysis through 40 events in 2009 showed that the quality of stored rainwater depends on the conditions of the catchment and storage tank and the antecedent dry period. English IWA PUBLISHING Quality assessment of rooftop runoff and harvested rainwater from a building catchment Article 10.2166/wst.2011.592 1 WATER SCIENCE AND TECHNOLOGY, v.63, no.11, pp.2725 - 2731 WATER SCIENCE AND TECHNOLOGY 63 11 2725 2731 scie scopus 000292030100035 2-s2.0-79959297317 Engineering, Environmental Environmental Sciences Water Resources Engineering Environmental Sciences & Ecology Water Resources Article WATER POLLUTION correlation analysis first flush metal principal component analysis rainwater harvesting