We Know How to Manage Waters

Water is a common good and natural resource of paramount importance.
The quality of our life and health is inseparably connected with water; therefore, we need to protect water and its ecosystems against action that might negatively affect it.

Services

The Institute for Water designs practical water management solutions for public institutions and companies.
These solutions are based on studies and allow long-term good water status.

Key figures

employees (1 June 2026)
0
departments
0
research/professional departments
0
with higher education
0 %

Departments

The institute comprises five departments: four carry out research and development, the institute’s main activity, while the Department of General Services provides support activity.

Department of Hydrology and Hydraulics

Research and development activities

Department of Biological and Ecological Sciences

Research and development activities

Department of Water Quality, Water Supply and Wastewater Management

Research and development activities · IWRS Laboratory

Information Technology Department

Research and development activities

Research Activities Centre

A standing advisory body to the Director that connects the work of the research and development departments.

Key areas of work

Climate-change resilience

Water management and protection against floods and torrents.

Water supply and wastewater

Collection and treatment, drinking-water quality.

Use of water and sediments

Expert support for the sustainable use of water resources.

Expert bases

Water management plans (NUV), flood-risk management plans (NZPO) and the marine environment (NUMO).

Latest news

IzVRS on a radio programme about ‘Why is the sea blue?’

IzVRS on a radio programme about ‘Why is the sea blue?’   On Tuesday’s quiz on Radio Prvi, Dr Sašo Šantl from the Hydrology and Hydraulics Sector and Dr Tine Bizjak from the Water Quality Sector, Water Supply, Drainage and Wastewater Treatment, casually explored explanations for the colour of water. From the blue oceans, the emerald Soča, to clear mountain streams…

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IzVRS at the NMWE 2026 annual conference in Ljubljana: integrating national strategies for water and nature with the business sector

IzVRS is participating as a partner in the new European STRIVER project – Strengthening the resilience of transboundary river basins to climate change, with a focus on extreme hydrological events, which is being implemented under the INTERREG Slovenia–Croatia programme.
The project launch agreement was signed on 2 March this year, and the partners met in person for the first time at the project’s kick-off meeting, which took place on Friday 6 March in Novo Mesto.

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IzVRS in the STRIVER project: key challenges in managing the Kolpa river basin take centre stage at two workshops in June

IzVRS is participating as a partner in the new European STRIVER project – Strengthening the resilience of transboundary river basins to climate change, with a focus on extreme hydrological events, which is being implemented under the INTERREG Slovenia–Croatia programme.
The project launch agreement was signed on 2 March this year, and the partners met in person for the first time at the project’s kick-off meeting, which took place on Friday 6 March in Novo Mesto.

Read More »

International references

Water borders do not exist. The Institute for Water collaborates and shares knowledge in numerous cross-border projects.
We frequently cooperate with institutions from other European countries.

Current international projects

  • Restore4Life – restoration of aquatic ecosystems
  • DanubeSediment_Q2 – Danube sediment management
  • STRIVER – strengthening the resilience of cross-border river areas (Interreg SI–HR)
  • Tethys4Adrion and AquaticPlastic – plastics in aquatic environments
  • Natura Kozjansko – cohesion project for nature conservation

National references

The Institute for Water provides a wide variety of efficient water management solutions
for institutions and the economy.

Purpose

The mission of the Institute for Water of the Republic of Slovenia (IWRS) is to provide independent, high-level professional support to the Ministry of the Environment and Spatial Planning, in particular its Water Directorate, and, where appropriate, to other national public authorities involved in water management.

IWRS carries out professional, development, and analytical activities based on the applicable legal framework, primarily the Water Act, the Drinking Water Supply and Urban Wastewater Collection and Treatment Act, and other legislation governing the protection, use, and management of water resources.

The Institute prepares expert technical bases for legislation, strategic documents, technical guidelines, and implementation plans. It contributes to the implementation and monitoring of river basin management plans and reporting to the European Union, develops innovative approaches to addressing water-related challenges, and promotes the efficient use and protection of water resources.

In addition, IWRS strengthens research and innovation in the field of water management, participates in national and international projects, and contributes to raising public awareness and knowledge about the importance of sustainable water management.

Contact

PHONE

+386 (0)1 477 53 00

ADDRESS

Einspielerjeva ulica 6,
1000 Ljubljana, Slovenia

E-MAIL

info@izvrs.si