Changes

- Improves water clarity substantially<br>- Requires no chemicals<br>- Easy to install at any site in rural, urban, semi-urban and remote areas.<br>- Modular system which allows combination of units. Therefore, can be used to service as many people as required<br>- Maintenance on yearly basis only<br>- Filter can be maintained by the members of the community thus creating livelihood options<br>- Long term benefits and low recurring costs<br>

- Requires ascertaining the quality of the raw water and normally cannot be applied to water at low temperatures, with high turbidity levels and/or very low nutrient levels<br>- Attitudinal change might be needed (belief system that water is not clean without chemicals)<br>- Relatively high initial cost <br>- Requires electricity/generator<br>