Groundwater is most polluted in aquifers with intergranular porosity in the northeastern part of Slovenia.

Water protection areas cover 3532 km² or 17,4% of Slovenia’s land surface in 2021. This is a slight increase, compared to 2017, but the goal of protecting the areas of all water sources for public water supply with a regulation on national level, has not been reached yet.

Children in some primary schools and kindergartens in the Municipality of Ljubljana are exposed to road traffic noise. Of 105 kindergartens and 54 elementary schools, the limit value of environmental noise for playgrounds 55dB(A) determined by the WHO was exceeded on all facades at only one kindergarten. In 29 elementary schools and 48 kindergartens, this limit value was exceeded at least on the most exposed facade. In the school year 2013/2014, 11,925 pupils attended those 29 elementary schools and 5,946 children attended the mentioned 48 kindergartens.

The limit value for environmental noise for playgrounds (55dB(A)) determined by the WHO was exceeded at the most exposed facade at 12 primary schools. However none of 34 kindergartens and 22 primary schools was exposed to excess noise limit at all four facades. There were 4,097 pupils in 12 schools and 2,909 children in 24 kindergartens where the high noise levels at most exposed facades were determined in the school year 2013/2014.