EWB Challenge | Regarding The Ranger Camp Base’s 250,000L Water tank

Challenges

This topic has 4 replies, 3 voices, and was last updated 50 minutes ago by Evelyn Todio.

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08/03/2026 at 4:12 pm #9990
Gabriel Portilla
Participant
Hello, I would just like to ask if the 250,000L Water Tank in Port Stewart Ranger base uses some sort of insulation within the tank to help reduce water evaporation. I would assume so correct?

If so, is it possible for information to be provided on the material used the tank’s insulation?

Also, is there more of this material stored in the base’s storage?

Kind Regards,
Gabriel Portilla
A 1st year student in Curtin University
16/03/2026 at 6:26 pm #10017
Evelyn Todio
Keymaster
Hi Gabriel,

Thank you for your questions. I am awaiting for a response from out scoping partners. Your patience is greatly appreciated.

Kind regards,
Evelyn
23/03/2026 at 2:57 pm #10051
Evelyn Todio
Keymaster
Hi Gabriel,

Thank you for your patience.

I don’t believe there is an insulation liner to prevent evaporation. Evaporation would be controlled by the enclosed design i.e. the lid.

Water tanks are usually lined with a food-grade liner to ensure the water stays fresh and to prevent contamination. However, there is no excess liner stored at the ranger base.

I hope this helps.

Kind regards,
Evelyn
21/09/2026 at 6:20 pm #10546
Joe Hovel
Participant
Hi all. I’m new here for this term at Adelaide University.
May I ask in relation to the watertank, if the tank cover/lid is used to collect rainwater during the wet season? It would obviously fill the tank to total rainfall level (1100-1400mm) on its own less each “first flush” waste.
Secondly, are there “first flush” systems on all downpipe intakes at the ranger building?
Lastly, do we have any data from the last wet if the tank was completely filled?
If so, do we know yet how long it lasted during the last dry? And what the water was like at the end of the dry. We’re samples taken to gauge bacterial count at intervals and what were the findings?
Cheers
Joe
22/09/2026 at 12:11 pm #10556
Evelyn Todio
Keymaster
Hi Joe,

Welcome to the EWB Challenge and thank you for your questions.

Yes, water is collected during the wet season. We do not have any information about the construction of the tank so I do not know about the first flush systems on the downpipes.

Based on some site notes taken from a visit in august 2025, the tank was approximately full, having been partially filled with water form Coen via a tanker. At the time of the visit there were no coliforms present in the samples and it was considered safe drinking water.

This is all of the information I have at present. i hope it is helpful.

Kind regards,
Evelyn
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