The end of SIIF : The UWWTD-SIIF is stopped. For all UWWTD related information please see the EEA website

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Welcome to the Urban Waste Water Treatment Directive (UWWTD) site for Croatia !

In 2018, Croatia had 260 urban waste water agglomerations of more then 2 000 population equivalent (p.e). These agglomerations generated a total load of 5 011 398 p.e. 68% of this load is connected to collecting systems and 21% addressed through Individual and Appropriate Systems (storage or septic tanks, micro-stations,...). These agglomerations are connected to 52 primary treatment plant, 40 secondary treatment plants and 13 more stringent treatment plants. All these treatment plants have a total design capacity of 4 116 643 p.e.