TGDC REPORT - IRRIGATION WATER
The provision of water for irrigation of our golf course is the single most important issue facing the club.
Members should understand that it is not a matter of “can we get water?”. There are sources available to us. The question is “which one of the available sources is best for the club.”
In making the selection TGCD is guided by the following tests:
- is it secure/reliable?
- is it long term?
- is it affordable?
Town Water
Members will be aware of a number of media articles about the use of potable town water for golf course irrigation. Use of town water is, and always has been, a last resort . It does not meet the test of affordability. We did think that it may have been a secure and reliable option but recent decisions by council demonstrate that this is not the case. We only pursued this option because Council has rejected all other options put to them. Members should be aware that the club has NEVER taken council water to irrigate its course.
Underground Water
Up until 1974, 9 holes of the course were irrigated by bore water. There was insufficient supply for the rest of the course. This year 2 new bores have been sunk and testing undertaken. If an acceptable quality of bore water can be established, bore water may prove to be a worthwhile fall back supply but limited to providing up to a maximum of one third of total requirements
Cleveland Bay Treatment Plant
Council requested us to investigate this potential source of supply. The unwritten inference was that if that water was suitable, council may assist with the capital cost of connecting it to the course. At considerable cost to the club, this water was analysed and found to have high salinity levels.
At some time in the future council may spend the millions of dollars required to further treat that water but that does not meet the clubs present requirements.
Aplins Weir
Initially the gravity piping of raw water from Aplins Weir was our preferred option. The main attraction being affordability.
Council has consistently rejected this option.
Mining and treating council sewer
This is what we do now and has been the source of course irrigation water since 1974. There is a written agreement with council which dates back to 1974 and has a considerable period to run. When TGCD was set up, it was found that the existing plant is antiquated, expensive to maintain and operate and barely meets licencing requirements. It was decided then that whatever may be the long term water supply, this plant had to go and the government required it to be decommissioned. From that point many decisions have been taken about course layout, residential development and new club house which all depend on this plant being decommissioned.
A new STP, appropriately located, would meet the tests of security (existing agreement with council), reliability, long term and affordability. A number of options for a new plant have been identified and we are now working through a system of trials and tests to see if there is one that meets our needs.
Timing
There is a time deadline. We need to have a new water source operational before we start constructing the remaining 11 holes in mid 2017.
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