Territory Stories

Air and water concentrations of radon in Alice Springs and Santa Teresa houses, 1984



Air and water concentrations of radon in Alice Springs and Santa Teresa houses, 1984


Alcock, J. F.; Johnston, G.; Northern Territory. Department of Mines and Energy. Water Resources Division


E-Publications; PublicationNT; E-Books; Technical Report ; No. 11/1985




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


This report details results of integrated radon measurements taken in and around five houses at Alice Springs. Radon concentrations were measured in reticulated water supplies, household rooms and outdoor air. The reticulated water supply and bathroom air of two houses in Santa Teresa were also measured. The possible significance of the water supply as a source of indoor atmospheric radon is discussed. Recommendations for further reticulated water supplies discussed. sampling and implications for in the Northern Territory are discussed.


prepared by J. Alcock & G. Johnston

Table of contents

1. Introduction -- 2. Sampling programme -- 3. Analysis and results -- 4. Health -- 5. Conclusions and recommendations -- 6. Acknowledgements -- 7. References.




Water quality -- Northern Territory -- Alice Springs Region; Air quality -- Northern Territory -- Alice Springs Region; Radon measures

Publisher name

Department of Mines and Energy. Water Resources Division.

Place of publication

Alice Springs (N.T.)


Technical Report ; No. 11/1985


38 pages : illustrations and maps ; 30 cm.

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Check within Publication or with content Publisher.

Related links

http://www.ntlis.nt.gov.au/hpa-services/techreport?report_id=WRA85011; Also available online in pdf format from NRETA maps http://www.ntlis.nt.gov.au/hpa-services/techreport?report_id=WRA85011; http://www.ntlis.nt.gov.au/hpa-services/techreport?report_id=WRA85011 [Also available online in pdf format from NRETA maps]

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Technical Report WRA85011 Viewed at 03:02:19 on 18/02/2010 Page 21 of 38. I I I I I I I I I I I I I I I I I I I I Shown in tlgure 3{a} is the variation in ratio of raCon-222 to total radon against radon-222 measured in Alice Springs. A ratio of one indicates the presence of only the isotope radon-222. The distribution suggests that radon-222 is the principal isotope and that the thoron isotope makes a negligible contribution to indoor radon concentrations in Alice Springs. In only one case , the laundry of house 3 is there any statistical difference at the 95 percent confidence level between rooms within a house. Ignoring the laundry of house threer no significant difference between houses in Alice Springs is observ_ed. The radon concentrations represent an integrated measurement over one hundred days and coincide with the transition period between winter and summer in Central Australia. Listed in table 3 (ii) are the average monthly maximum and minimum temperatures experienced in Alice Springs during the months August to November 1984. Included for comparison are the long term monthly averages Table 3 (ii) ALICE SPRIRGS MAXIMUM & MINIMUM AVERAGE MONTHLY TEMPERATURES 1984 { c ). LONG TERM 1984 MONTH MAXIMUM MINIMUM MAXIMUM MINIMUM August 26.6 9.9 23.7 5. 5 September 22.3 6.1 24.3 8.5 October 30. 5 14.6 30.3 13.8 November 33.4 17.7 35.0 16.9 12

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