Akvopedia-spade, administrator
3,247
edits
Changes
no edit summary
*[[Solution of the week 3|Solution 3: Tried and true — treating water with chlorine]]
*[[Solution of the week 4|Solution 4: Baptist drilling - — affordable boreholes made by drilling clubs]]
*[[Solution of the week 5|Solution 5: Clean water - — it's right above your head]]