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Studies on Contamination Levels of Chlorinated Trihalomethanes (Thms) Disinfection By-Products (Dbps) In A Community Drinking Water Supply In Hossana Town, Ethiopia

Author

Listed:
  • Demis Zelelew
  • Hadush Gebrehiwot

    (College of Natural and Computational Sciences, Wachemo University, Hossaina, Ethiopia)

  • Habdelo Esatu

    (Hossana water supply and sewerage Autority, Hossana, Ethiopia)

Abstract

The disinfection of water using chlorine is most commonly used practice all over the world because of its low cost, easy to use, efficient against a broad spectrum of microorganisms and enables the maintenance of a residual protection. Disinfection of municipal water using chlorine has a strong drawback, which is the generation of several Disinfection By-products (DBPs). These THMs are formed due to reaction of chlorine with natural organic matter and other precursors found in water. Total Trihalomethanes (THMs) content can vary greatly, depending both on water quality and on treatment conditions, in the same water supply system. This study aims at establishing the concentration range of THMs in drinking water supplies from treatment plant and distribution systems in Hossana town. Concentration levels of trihalomethanes in water were analyzed by solvent Extraction followed by GC- ECD detection. The concentrations of THMs (34.19-135.72μg/l) found to be lower than the prescribed USEPA standards and WHO guidelines. The study also revealed that amongst various THMs, contribution of chloroform was highest followed by other THMs.

Suggested Citation

  • Demis Zelelew & Hadush Gebrehiwot & Habdelo Esatu, 2018. "Studies on Contamination Levels of Chlorinated Trihalomethanes (Thms) Disinfection By-Products (Dbps) In A Community Drinking Water Supply In Hossana Town, Ethiopia," International Journal of Environmental Sciences & Natural Resources, Juniper Publishers Inc., vol. 10(1), pages 01-10, April.
    • Handle: RePEc:adp:ijesnr:v:10:y:2018:i:1:p:01-10
    DOI: 10.19080/IJESNR.2018.10.555779
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    Keywords

    earth and environment journals; environment journals; open access environment journals; peer reviewed environmental journals; open access; juniper publishers; ournal of Environmental Sciences; juniper publishers journals ; juniper publishers reivew;
    All these keywords.

    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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