7. Case studies

This TOP includes six case studies. These show:

• Information exchange between communities leading to improvements in an MSF plant in La Tulia, Colombia
• Research into gravel pre-filtering plus oxidation for removing iron and manganese at Instituto Cinara, Colombia
• Overcoming turbidity variations by combining an infiltration gallery with slow sand filters in Mizque, Bolivia
• Multi-stage filtration (MSF) to prevent biofilm growth in Cali, Colombia
• Performance of a rural multi-stage filtration plant in Rwanda
• Performance of multi-stage filtration using different filter media in Kenya