An Institute of Expertise
and Innovation.

Founded on 23 December 2021 by the Government of the Republic of Croatia, this institution is renowned for its experts in water quality assessment across the country.

ABOUT US

Josip Juraj Strossmayer Water Institute, established by the Government of the Republic of Croatia, is renowned for its expertise in the fields of natural, biotechnical, and technical sciences, particularly in chemistry and biology, with a focus on water science and quality assessment. Named after Josip Juraj Strossmayer, a distinguished 19th-century Croatian bishop and theologian, the Institute is dedicated to improving water management systems and addressing environmental challenges in Croatia’s water sector. On 7 September 1886, Bishop Strossmayer founded the Vuka River Regulation Cooperative, which is considered the first institutional water management document in the present-day Republic of Croatia.

WATER QUALITY

All locations
03.05.2025.

    Konavle, Prevlaka

    Air temperature at 0h

    0°C

    Water/sea quality*

    izvrsno

    *Final grade for 2024

    Slavonski Brod

    Air temperature at 0h

    0°C

    Water/sea quality*

    izvrsno

    *Final grade for 2024

    Jarun, Zagreb

    Air temperature at 0h

    0°C

    Water/sea quality*

    izvrsno

    *Final grade for 2024

    Uvala Škar, Šibenik

    Air temperature at 0h

    0°C

    Water/sea quality*

    izvrsno

    *Final grade for 2024

    Skrivena luka, Lastovo

    Air temperature at 0h

    0°C

    Water/sea quality*

    izvrsno

    *Final grade for 2024

    Kupalište Slatina, Opatija

    Air temperature at 0h

    0°C

    Water/sea quality*

    izvrsno

    *Final grade for 2024

    Drava Copacabana, Osijek

    Air temperature at 0h

    0°C

    Water/sea quality*

    izvrsno

    *Final grade for 2024

    Korana Foginovo kupalište, Karlovac

    Air temperature at 0h

    0°C

    Water/sea quality*

    izvrsno

    *Final grade for 2024

Data source: Hrvatske vode, IOR, DHMZ
Data owner: Ministry of Environmental Protection and Green Transition

News and events

Learn more about the importance, preservation, and positive trends.

Water in focus: measurement stations

DOWNLOAD MAP

Partnership with national parks and nature parks

Learn more

Partnership with national parks and nature parks

Learn more

OUR STORY

History of establishment

LEARN MORE

Mission

Expert analysis and development.

To provide scientific and professional support in the development, implementation, and evaluation of water policies.

Vision

Our leadership role.

To establish a leading position in the scientific and professional community for integrated water resource management.

LEARN MORE

Integrated system: from fieldwork to laboratory

Our water policy is based on a precise analysis of water resources conducted over a six-year monitoring period. Monitoring stations and specific water quality indicators have been defined. Centralised within the Laboratory Information Management System (LIMS), the data follow a pathway from field measurements to laboratory analysis and storage. LIMS ensures reliability and precision, contributing to improved water resource management and nature conservation.

Activities of the Institute

Each of the Institute's activities plays a crucial role in the preservation and effective management of water resources.

Monitoring - Quality monitoring of surface inland waters (rivers and lakes), transitional and coastal waters, territorial seas, and groundwater

Strategic Planning - Development of studies and analytical frameworks for water management

Preparation - Development of tools for reforming the water services sector

Educational Role - Education for water management

Expert Reports - Expert reports related to water management

Professional Support - Support for political decision-makers

Questions and Answers

01.

What are the differences between surface waters and inland waters?

Surface waters include rivers, lakes and seas, while inland waters include groundwater sources and water tables. The differences between the sources and quality of these waters affect their purpose and conservation.

02.

I would like to know the quality of the water from my tap or well, but also whether the Josip Juraj Strossmayer Water Institute can provide me with a water analysis?

Analyses of water for human consumption are carried out by the Croatian Institute of Public Health and the Croatian network of local public health institutes under the administration of Zagreb.

03.

Who do you report dead fish or greasy stains in the water to?

It is necessary to call 112. The operator will contact the on-duty officer in the Water Protection Sector of Hrvatske vode, who will engage the water guard responsible for the relevant watercourse (or stagnant water body) to assess the situation and, if necessary, meet with the caller. In the meantime, the on-duty officer of the Water Management Department of Hrvatske vode and the authorized water testing laboratory are notified.
If the water guard confirms that an inspection is required, in addition to the aforementioned emergency services, the state water management inspection (and the veterinary inspection in the event of a significant fish die-off) will be informed as needed. In cases of major pollution, an authorized company for emergency response to water and/or soil pollution incidents requiring remediation will also be notified.