This brief focuses on bio-sand water filters, which use sand and gravel to partly clean water with a simple approach.
Download| Collections | |
| Issue Date | 2011 |
| Format | Fact Sheet |
| Rights Holders | Practical Action |
This brief focuses on bio-sand water filters, which use sand and gravel to partly clean water with a simple approach.
Download| Collections | |
| Issue Date | 2011 |
| Format | Fact Sheet |
| Rights Holders | Practical Action |