Journal of
Ecology and The Natural Environment

  • Abbreviation: J. Ecol. Nat. Environ.
  • Language: English
  • ISSN: 2006-9847
  • DOI: 10.5897/JENE
  • Start Year: 2009
  • Published Articles: 355

Full Length Research Paper

Effects of municipal and industrial discharges on the quality of Beressa river water, Debre Berhan, Ethiopia

Haymanot Awgchew*
  • Haymanot Awgchew*
  • Department of Plant Science, College of Agriculture and Environmental Science, Debre Berhan University, P.O. Box: 445 Debre Berhan, Ethiopia.
  • Google Scholar
Heluf Gebrekidan
  • Heluf Gebrekidan
  • Department of Natural Resources Management and Environmental Sciences, College of Agriculture, Haramaya University, P.O. Box: 138, Dire Dawa, Ethiopia.
  • Google Scholar
Adamu Molla
  • Adamu Molla
  • Crop research directorate, Debre Berhan Agricultural Research Centre, P.O. Box: 112, Debre Berhan, Ethiopia.
  • Google Scholar


  •  Received: 01 January 2015
  •  Accepted: 22 February 2015
  •  Published: 27 February 2015

Abstract

The problem of environmental pollution is not simple and easy to ignore because it affects the survival and normal functioning of an ecosystem by changing the overall healthy interaction between its components and after once it occurs, will be difficult to control. Fortunately, in the town of Debre Berhan (Tebasie), it is a common phenomenon due to the discharge of untreated liquid and solid wastes from industrial and municipal activities. Thus, this study was conducted to determine the status of Beressa River and to reveal the effects of industrial and municipal discharges on the water quality of the river for irrigation and other domestic uses. After selecting six different sampling sites depending on the suspected and identified sources of pollution, the river water was analyzed for different parameters like temperature, pH, electrical conductivity (EC), oxygen demand [biological oxygen demands (BOD) and chemical oxygen demand (COD)], total suspended solids (TSS), total dissolved solids (TDS), PO43-, SO42-, HCO3-, NH4+, NO3-, Cl- B, basic cations (Na, K, Ca and Mg), heavy metals (Cr, Pd, Cd, Ni, Hg and As) and micro nutrients (Fe, Mn, Cu and Zn). The water had no problem related to temperature, pH and EC. However, the COD, BOD, PO43-, TSS, TDS, Pb and Hg contents at different site were above their respected maximum permissible limit but the rest detections were below the concerned allowable value while requiring an extra attention for restoring the quality with the control or avoidance of further deteriorations. 
 
Key words: heavy metals, oxygen demand, pollution, river water quality.