Science & Research

Monitoring of Radiological Quality Indicators of Drinking Water

Drinking-water hydroanalytical laboratory of the Zilina-based Northern Slovakia Water and Sewerage Company (Severoslovenske vodarne a kanalizacie, SeVaK) has been systematically monitoring radiological quality indicators of drinking water for several year

s.

Operating checks in 1999 involved 500 determinations of total volume alpha activity, and somewhat fewer (458 and 462, respectively) determinations of total volume beta activity and radon-222 volume activity. 55 analyses showed that the total volume alpha activity indication value (IV) set forth by the drinking-water quality standard STN 75 7111 was exceeded. Radon-222 volume activity indication level set out by the standard was exceeded in 8 samples.

These results were used in 2000 to select for monitoring 76 outlets from the water supply system managed by SeVaK. The determinations included total volume alpha and beta activities, radon-222 volume activity and, if an indication value was exceeded, also radium-226 and natural uranium volume activities, on a quarterly basis. The results were evaluated in accordance with the standard STN 75 7111 and the Slovak Health Ministry's regulation 12/2001 on Requirements for Ensuring Radiation Protection which sets forth intervention values for water in public water supply systems as follows: total volume alpha activity 0.2 Bq.l-1, total volume beta activity 0.5 Bq.l-1 and radom-222 volume activity 50 Bq.l-1.

The derived intervention level of total volume alpha activity was exceeded in 36 water samples collected at Turcianska Stiavnicka, Podhradie and Slovenske Pravno run by the Martin Division, and from water sources managed by the Liptovsky Mikulas Division at Liptovsky Hradok (springs Zapac), Liptovska Porubka (wells Kamenista and Kvacany), and also in samples from Istebne (Dolny Kubin Division) and Liptovske Revuce – spring Biele vody (Ruzomberok Division).

The derived intervention level for Rn222 volume activity was only exceeded in the water supply system at Istebne. The situation was solved by installing an airing tower in the Istebne water tank.

Personnel of the State Health Institute's Department of Health Protection against Ionizing Radiation in Banska Bystrica assessed the results of the monitoring and it was agreed to take these steps in 2001:

  • to make one-time determinations of lead-210, polonium-210 and thorium-232 volume activities in water supplied to customers through water supply systems at Turcianska Stiavnicka, Podhradie, Slovenske Pravno, Liptovsky Hradok, Kvacany and Ruzomberok;
  • whenever the derived intervention level of total volume alpha activity is exceeded, it is necessary to determine also radium-226 and natural uranium volume activities and to continue doing these determinations until further notice;
  • to carry on with the measurements of radiologic indicators of drinking water quality once a year at customer's outlets which were monitored in 2000.

           A. SURLAKOVA - In: Vodohospodarsky spravodajca. - Vol. 44, 20, no. 9(2001), p. 4-5

        Information & Contact:

    Research Institute of Water Management,
    Nabr. arm. gen. L. Svobodu 5,
    811 02 Bratislava,
    tel.: 00421 (2) 59343111,
    fax: 00421 (2) 54415743

        Severoslovenske vodarne a kanalizacie, s.p (SeVaK).,
    Boricka 107,
    010 23 Zilina
    Tel.: 00421 /41/ 764 87    


  • The basis for prosperity and all other goals of the “EU Strategy for the Danube Region“ (EUSDR) is “Good Governance”. This concept not only comprises…

    more

    This year, we are awarding a AU$200,000 prize for outstanding achievements in sustainable river basin management.

    more

    The European Waste Water Management Conference is the UK's leading conference for wastewater professionals. Over 50 technical papers will be presented…

    more

    Water Expo China will return once again to Beijing’s New China International Exhibition Center from 15 – 17 November 2016. The three-day event is…

    more

    The Austrian Ministry of Environment has meanwhile received public feedback on the second implementation phase of the WFD in Austria. The following…

    more

    Especially so in the Danube River, as Austria's Infrastructure Minister Alois Stöger pointed out during the presentation of the integrated Danube…

    more

    In Austria, summertime is festival time. Besides classical concerts and theatre performances, there are also special awareness-raising events around…

    more

    These conflicting interests are also a concern for Franz Grabner, the new CEO of Pipelife Austria effective 1st July. In an interview with aqua press…

    more

    This prestigious global award of the International RiverFoundation (IRF) is bestowed in Brisbane in late September. The river restoration programme…

    more

    Thanks to the adoption of a new technology at LINZ AG Wasser in November, staff no longer has to work shifts and weekends and customers benefit from…

    more

    Subscription and Media Data

    You want to know the leading Austrian trade magazine ? You want to learn about release dates , priorities and advertising opportunities ?

    Here you are right!

    SubscriptioN | Abonnement

    Media Data