Territory Stories

Groundwater studies Ti-Tree Basin 1984-1988



Groundwater studies Ti-Tree Basin 1984-1988

Other title

Peter McDonald


McDonald, Peter


E-Publications; E-Books; PublicationNT; Power and Water Authority Report ; no. 1/1990




Made available via the Publications (Legal Deposit) Act 2004 (NT).






Groundwater -- Northern Territory -- Ti-Tree Region

Publisher name

Water Resources Branch, Power and Water Authority

Place of publication

Alice Springs


Power and Water Authority Report ; no. 1/1990


1 v. : ills., maps ; 30 cm.

File type


Copyright owner

Check within Publication or with content Publisher.

Parent handle


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Page content

-49- TABLE 4.3(b) RADIUM CONCENTRATIONS BORE RN RADIUM 226 (in mBq/L) (a) In Water (b) In residue 14249 7 < 1 14853 10 < 1 Recommended levels for radionuclides in irrigation water are those set out for potable supplies (Environmental Protection Agency, Victoria, 1983). The guideline value for potable water (NHMRC 1987) is gross alpha activity of 100 msq/L. As Radium 226 is the most restrictive naturally occurring radionuclide with respect to water supplies, it can be safely assumed that gross alpha activity is well below the guideline value. 4.4 ISOTOPE CHEMISTRY 4.4.1 Tritium And Deuterium Tritium and deuterium determinations on samples obtained during Stage 2 of the 1984/85 investigation were carried out by the Australian Atomic Energy Commission at Lucas Heights, under the supervision of Dr G. E. Calf. Results are shown at Table 4.4.1. In all samples tritium values were very low, indicating - that waters sampled are older than 25 years, and probably older than 50 years since recharge. A - comparison of sampling depth against standing water level for each bore sampled shows that all of the samples were obtained from below, and in many cases - several metres below, the water table.

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