Galiwinku Groundwater Resource and Evaluation DLH-492
Yin Foo, Des
E-Publications; E-Books; PublicationNT; Report ; 6/1984
Made available via the Publications (Legal Deposit) Act 2004 (NT).
Dept. of Transport and Works
Report ; 6/1984
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Technical Report WRD84006 Viewed at 14:07:13 on 29/07/2010 Page 19 of 60. Corrosion of the reticulation is perhaps the most serious consequence of the low pH. Aeration of the water prior to reticulation is suggested as a form of treatment. Pump column corrosion has already been reduced with the recent introduction of stainless steel column. Excessive iron in the water was reported to be a problem prior to 1976. The report by J.B. Jones attributed the cause to corrosion products of the reticulation pipework. This is supported by water analyses in Table 2.4 which indicates there is negligible iron from water sampled at the borehead. If aeration of the water is introduced any inherent iron in the water will be precipitated as iron hydroxide. Due to major corr~unity development over the confined area of the aquifer, the recharge area of the aquifer and bores within the community have had only minor susceptibility to pollution. However, given the sandy profile and high infiltration capacity over the recharge area shown on Figure 2.3, any future development that may present a pollution threat should not be established over that area.
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