KAZALCI OKOLJA

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Bad

Trends in annual precipitation are not as obvious as temperature trends, changes between years and regions are significant. According to the climate change projections, annual precipitation will slightly increase while changes in seasonal precipitation will be noticeable. We shall be worried about summer conditions, because less precipitation and higher temperature might result in higher frequency of droughts. In winter, more precipitation may lead to an increase in flooding events.

Bad

Precipitation is highly variable in space and time, even more than temperature (storms and hail). In the last two decades, Slovenia is observing catastrophic droughts and abundant precipitation resulting in floods, sometimes drought and floods occur even within the same year. The maximum snow cover depth and the depth of fresh snow decreased in the period 1961-2011.

Neutral

Water consumption in Slovenia represents a relatively small proportion of the annual gross water outflow from the country. In 2018, the annual WEI+ index was around 3%, or, compared to the periodic average of water availability. The Long-term Annual Average Water Exploitation Index shows a slight decrease, but the trend is not statistically significant.

Neutral

In recent years, the amount of wastewater treated by secondary or tertiary treatment processes increased, while primary treatment processes have closed. The amount of wastewater treated through secondary treatment processes increased by 118 % since 2002 or from 38 million m3 (in 2002) to almoust 46 million m3 (in 2018). There were almost no tertiary wastewater treatment processes in Slovenia in 2002, and in 2018, 72% of wastewater or 116 million m3 of wastewater was treated by tertiary process.

Neutral

While annual runoff in Slovenia was above the average in 2013 and 2014, it fell below the average in 2015. In the period 1961–2015, annual runoff was lower only in 1983, 2003 and 2011. The long-term downward trend of river runoff from the Slovenian territory currently persists.

Neutral

Slovenian groundwater bodies most polluted with nitrates are those with intergranular (alluvium) aquifers, particularly in north-eastern Slovenia. Groundwater in karst and fractured aquifers is less burdened with nitrates due to geographical conditions, low population density and less agricultural land. In the period 1998–2018, the average annual levels of nitrates in water bodies in the Savinja, Drava and Mura basins show a statistically significant downward trend.

Neutral

In general, the levels of pesticides in groundwater are decreasing. In Slovenian lowlands (the Drava and Mura river basins), which are characterised by intensive agricultural activity, certain pesticides, phytopharmaceuticals in particular, still exceed quality standards. Individual point sources of pollution can be a result of unskilled use of plant protection products.

Neutral

In Europe, the number of lakes with low phosphorus content and greater transparency is increasing, which is the result of measures taken to reduce pollution in their catchment areas. Compared to the 70s, improvement has been observed in Lake Bled since the introduction of remediation measures. As a result, the lake is again classified as moderately burdened and mesotrophic. However, excessive concentrations of phosphorous compounds are still occasionally present, which are reflected in increased phytoplankton biomass and reduced transparency of the lake.

Neutral

In general, larger supply zones have adequate drinking water quality. The most problematic are small supply zones due to frequent or permanent faecal contamination. Small supply zones are related to zones that cover 50-1.000 residents (most frequently 50-500 residents). Problematic are also some small supply zones with surface water like karst source soft drinking water. The results of chemical analysis indicate contamination of drinking water mostly with pesticides. The monitoring of drinking water does not include systems for drinking water supply serving less than 50 persons.

Good

Inland bathing water quality in Slovenia is good and comparable with bathing water quality in other European countries.


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