Lorry what sucks dirty water out of holes?

At first we thought it was a sucky lorry, but of course it wasn't.

This is the lorry that puts the clean water into the hole. This is how they fill our water tanks on the roof.

We came downstairs to get on the bus to go to work this morning and caught them at it!

And here is Sally, one of our teachers (wearing her abaya) getting onto our college bus.

(You'll notice it has no windows. There is no public transport here - no buses, no trains - because men and women cannot travel together unless related. The University doesn't want everyone to see us travelling together.)