Changes

- Significantly cheaper than piston pumps.<br>- Easy to maintain.<br>- Easy to train on maintenance.<br>- Can be made locally by workshop.<br>- ideal to be used by one or two families in a shallow well on their own yard.<br>| valign="top" | - Not all introduction programs have been successful.<br>- When break systems fails, can be dangerous for children.<br>- Too many breakdowns when used by too many families<br>- Pumping becomes heaby heavy at depth below 25m.<br>- Repair management becomes costly and a problem after a while when used as a community handpump, due to too many repairs.<br>- hygiene around the well can become a problem due to splashing water at outle<br>