==Acknowledgements==
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* Low, J. (2002). Appropriate Microbial Indicator Tests for Drinking Water in Developing Countries and Assessment of Ceramic Water Filters’, Master of Engineering thesis. Department of Civil and Environmental Engineering, Massachusetts Institute of Technology. Cambridge, Massachusetts, USA.
* Napotnik, J., Mayer, A., Lantagne, D. and K. Jellison (Efficacy of Silver-Treated Ceramic Filters for Household Water Treatment. Department of Civil and Environmental Engineering, Lehigh University, USA. Available at: www.filterpurefilters.org/files/pdf/silver.pdf