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Evaluation of the long-term sustainability of biosand filters in rural Ethiopia

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conference contribution
posted on 12.02.2018, 15:07 by Paul Earwaker, J. Webster
Point-of-use water treatment is growing in popularity in the developing world, especially in rural areas where the costs of providing centralised treatment systems are higher than their low cost counterparts. One such technology, the biosand filter, has been shown to effectively remove turbidity and pathogens in laboratory and field research but the long-term performance of the filter and its sustainability are not well documented. An evaluation was therefore conducted to examine filters in rural Ethiopia installed more than 5 years previously. Filters were examined to assess filter performance, maintenance practices and the supporting environment. The working filters showed an average E.coli reduction rate of 87.9% with 75.7 % of filtrate samples achieving rates of <10cfu/100ml and 81.2% achieving turbidity values of <5NTU. The varied levels of usage in the three study villages, from 44% to 100%, also highlighted several risks and opportunities for continued active long term adoption.

History

School

  • Architecture, Building and Civil Engineering

Research Unit

  • Water, Engineering and Development Centre (WEDC)

Published in

WEDC Conference

Citation

EARWAKER, P. and WEBSTER, J., 2009. Evaluation of the long-term sustainability of biosand filters in rural Ethiopia. IN: Shaw, R.J. (ed). Water, sanitation and hygiene - Sustainable development and multisectoral approaches: Proceedings of the 34th WEDC International Conference, Addis Ababa, Ethiopia, 18-22 May 2009, 5p.p.

Publisher

© WEDC, Loughborough University

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2009

Notes

This is a conference paper.

Other identifier

WEDC_ID:10229

Language

en

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