Assessment of Roof Harvested Rainwater in Parts of Anambra State for Environmental Pollution Monitoring.
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Date
2014-10
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Abstract
Questions have been raised about the quality of roof harvested rainwater which has been
shown to be temporally and spatially variable and at times not in compliance with drinking
water guidelines. This study is therefore an investigation on the quality of roof harvested rainwater consumed by rural communities in parts of Anambra State Nigeria. The physicochemical
and microbiological parameters of the rainwater samples collected in the study
area were analyzed with the view of determining the level of contamination as a result of
anthropogenic activities in the study area. Roof harvested rainwater were collected from
three stations, and a free-fall harvested rainwater sample was used as a control. The
result shows that the physico-chemical parameters were all within permissible water
quality standard as recommended by National Agency for Food and Drug Administration
Control (NAFDAC) except for the presence of particles and for the micro-biological
properties which were found quite unsatisfactory. Pearson Correlation Matrix of physicochemical
properties conducted indicated a strong positive correlation between Zinc and
Iron which emphasizes common pathway and origin. The water samples were assessed
using Water Quality Index (WQI), the WQI for the station 1, 2 and 3 were 71.68%,
60.19%, and 77.55% respectively. Low-cost microbial disinfection such as solar
disinfection and pre-filtration or otherwise the proper maintenance of the entire Rain
Water Harvesting (RWH) system could make the harvested roof rainwater potable for the
study area.
Description
Keywords
Roof harvested rainwater, water quality monitoring, environmental pollution, water quality index, Nigeria
Citation
Chukwuma J N, Nnodu V C, Okoye A C, Chukwuma E C. Assessment of Roof Harvested Rainwater in Parts of Anambra State for Environmental Pollution Monitoring. British Biotechnology Journal. 2014 Oct; 4(10): 1105-1114.