Microcystins contamination of surface water supply sources in Zaria-Nigeria

Environmental Monitoring and Assessment
Mathias Ahii Chia, Mndepawe Jonah Kwaghe

Abstract

Cyanobacterial contamination of public water supply systems is a worldwide problem. The present study investigated water quality and microcystins (MCs) contamination of four public water supply systems in Zaria, Nigeria. The water bodies were eutrophic in the rainy and dry season and supported high phytoplankton biomass with chlorophyll a concentrations generally higher than 20.0 μg/L. The biomass of the predominant species (Microcystis aeruginosa and Anabaena subcylindrica) of cyanobacteria had a significant positive correlation with particulate and dissolved MCs. Dissolved MCs concentrations were higher (>1.0 μg/L) than the maximum permissible limits for drinking water in all the water bodies in the dry season and three of them in the rainy season. These results suggest that there is the need to have a regular monitoring program for these water bodies to prevent acute and chronic health hazards associated with MCs contamination of drinking and irrigation water.

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Citations

Feb 22, 2016·Ecotoxicology and Environmental Safety·Maria do Carmo Bittencourt-OliveiraFlávio dos Santos
Jun 28, 2020·Environmental Science and Pollution Research International·Medina O KadiriMathias Ahii Chia
Jan 6, 2021·Environmental Pollution·Mathias Ahii ChiaJehu Auta
Jun 23, 2021·Journal of Medicinal Chemistry·Qiuyue ZhangLei Wang

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