Apparently, Palmie has several supply loops of water. According to friend of mine, only one of these loops are suitable for fish. Why not collect rainwater, (you have a bit of that down there), or does it get blown away with that wind. Another way is to go and have a chat with a neigbour of WP's and tell them at the end of the year, you'll drop off a tray of the brown stuff at Xmas, for the use of their water.
Check the water from the petrol station nearby, fill with gas, and have some plastic containers in the back of the car.
There are a lot of variations to paying for it.
After all, it just comes thru the tap at Wp's
Alan 104