Hi Dayla,
Thank you for your questions. I passed your queries onto our Senior First Nations Program Manager who has informed me that:
1. Yes, your assumption is correct. However, there is no bore pump. They only use the fire pump. This only happens during the dry season when water in the river dries up.
2. Currently, there is no system of cleaning the river water for the pipes.
I hope this helps.
Kind regards,
Evelyn