KAZALCI OKOLJA

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Neutral

Values ​​of parameters used for monitoring the organic loading of rivers have greatly reduced since 1996, however ammonia levels remain much higher than natural background. The observed reduction in organic loading corresponds to an increase in the share of population whose wastewater is treated at wastewater treatment plants. The nutrient loading varies considerably among rivers of the Adriatic and the Danube river basins.

Good

Average levels of nitrate and orthophosphate in rivers are above the natural background values and do not show significant changes in the observed period. Average values ​​of biochemical oxygen demand and ammonia concentration in rivers in the observed period have been decreasing. The decrease is in accordance with the increase in the percentage of the population connected to municipal and common wastewater treatment plants.

 

Neutral

A good chemical state was established in 96% of surface water bodies, while poor chemical states were established in five marine water bodies due to tributyltin compounds. Generally, Slovenian surface waters are not polluted with priority or priority hazardous substances. In the 2009–2015 period, 59% of water bodies were estimated to be in good ecological state. Hydromorphological changes and general degradation are the main reasons for moderate or low ecological state of surface waters.

Neutral

Around 40,000 water permits and concessions were granted for special water use in 2016.

Neutral

Total renewable groundwater quantity in the shallow aquifers of Slovenia in the hydrological year 2016 was below the long-term average for the 30-year period 1981–2010.

Neutral

Water protection areas cover 347,000 ha or 17% of the Slovenian territory.

Good

For the period 2002–2005, an improvement in the chemical and saprobiological quality of rivers was observed.

Due to changes in legislation, this indicator was replaced in 2006 by the indicator [VD12] Chemical and ecological status of surface Waters.

Good

In 2014, 21 out of 22 sections of surface waters met water quality limit values set for assessing the capability of water to support freshwater fish life.

Inapropriate water quality was detected in the cyprinid section of the Mura River between the road bridge in Petanjci and its confluence with the Ščavnica tributary (Mura Mota measurement site) due to excessive concentrations of ammonia, measured on 8 July 2014. The limit value for ammonia in cyprinid waters is 0.025 mg NH3/l, while the measured concentration was 0.043 mg NH3/l.


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