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Water Quality in Slovenia - Agencija RS za okolje

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S U R F A C E W A T E R S<br />

Exceeded values of adsorbable organic halogen compounds (AOX) were measured <strong>in</strong> the water<br />

bodies <strong>in</strong>to which wastewaters with a large annual amount of AOX are discharged (23), or high<br />

concentrations are brought <strong>in</strong> by their tributaries (24). Despite the data on the reduction of AOX<br />

emissions <strong>in</strong>to waters <strong>in</strong> 2006 <strong>in</strong> relation to 2005 (24), an exceedance of the limit values was determ<strong>in</strong>ed<br />

<strong>in</strong> the Mura (Chart 1), the Ledava and the Logaščica.<br />

Chart 1: AOX concentrations <strong>in</strong> the Mura river <strong>in</strong> the years 2003 to 2006<br />

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The water bodies with the highest amount of AOX content were determ<strong>in</strong>ed on the lower Sava, where<br />

the ma<strong>in</strong> source was the direct <strong>in</strong>dustrial outflow from the VIPAP Videm Krško factory. In the last four<br />

months of 2006, the measured AOX concentrations at the monitor<strong>in</strong>g site Jesenice na Dolenjskem were<br />

below the limit value of 20 μg/L, which was the result of the clos<strong>in</strong>g down of the pulp production<br />

plant <strong>in</strong> the mentioned factory <strong>in</strong> September 2006 (Chart 2). It is a case which clearly demonstrates the<br />

reduction of AOX concentration to a permissible level immediately after a cessation of direct discharges.<br />

It is also evident from the Chart that there are no excessive AOX loads <strong>in</strong> the upper and middle Sava.<br />

Chart 2: AOX concentrations <strong>in</strong> the Sava river <strong>in</strong> the years 2000 to 2007<br />

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17

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