Due to high lead content in the environment, the Upper Meža Valley area was declared a brownfield site area in 2007 and underwent special remediation measures with the aim of protecting the health of people, especially children. Data shows that the lead exposure of children in the Upper Meža Valley improved rapidly in the early years of implementing the remediation measures, but no further improvement was observed after 2010. A prevalence study of lead levels in children's blood from the Meža Valley in 2018 even showed higher values compared to a study conducted in 2013.

The Slovenian EHVZ database (Hydrography and Water Land Records) contains 67.549 watercourses with total length of 41.071 km. Total area of still waters is 24 km² and river reservoirs 31 km².

For use in water management, water land areas are delineated. Total area of water land in Slovenia is 387 km², which is 1, 9 % of continental area of the Republic of Slovenia. Marine water land area is 214 km².

Soil drought has a key impact on plant development and consequently on various industries (forestry, agriculture, …) . Indicators of the number of drought days and the duration of drought periods in individual years show an increase especially after 1990. Similarly, the analysis of the impact of the climate change up to 2100 shows that soil water deficits will increase in the future. The number and the duration of the droughts will increase.

There are 17.431 parts of nature designated as valuable nature feature, among them 12.148 caves. Any construction or activity in a valuable natural feature area is allowed only if there is no other spatial or tehnical possibility.

Areas of protected nature are a measure of the state to preserve natural values and biodiversity in situ. They cover more than 13% of Slovenia’s territory. The largest and the oldest protected area is Triglav National Park, covering almost 84,000 hectares. In recent years, the total surface area of protected areas has expanded largely due to the designation of three landscape parks.