NOTICE TO CITIZENS regarding the planned groundwater tracing test in the Velje Brdo area

According to an assessment by the Swiss Federal Office of Public Health (BAG) (Brüschweiler, 2007), the short-term presence of uranine in drinking water at concentrations of up to 19 µg/L does not pose a health risk to consumers. During the test, the water quality at the Mareza water source will be monitored by the Waterworks laboratory, and the Institute of Public Health of Montenegro will also be notified so that it can independently monitor water quality if necessary. If the tracer appears at a concentration above 10 µg/L (at which concentration the colour could be visible in the water), the water source would be temporarily taken out of service until the colour disappears. In addition to the Mareza water source, the colour could theoretically appear at springs along the Zeta River, at springs emerging from the bottom of the Zeta riverbed (where detecting the tracer would be very difficult), in private wells and springs in the areas of Vranići, Tološi, Lješkopolje and surrounding settlements, as well as in new monitoring boreholes. The tracer will be injected into a borehole at Velje Brdo. Assessment by the Swiss Federal Office of Public Health (Brüschweiler, 2007): https://literature.wolkersdorfer.info/literature/Markierstoffe%20im%20Bereich%20von%20Trinkwasserfassungen.pdf Assessment by the German Federal Environment Agency (UBA, Behrens et al. 2001): https://agris.fao.org/search/en/records/65df19967c7033e84becd386 EU Drinking Water Directive 2020/2184 (the colour of the water must be acceptable to consumers): SDS and Certificate of Analysis, Thermo Scientific, lot R12L042: https://www.fishersci.de/shop/products/fluorescein-disodium-salt-thermo-scientific/15474139