| Relevance/rationale of the indicator (resp. why the indicator was chosen to measure the target and how it is suitable for these purposes) | The higher number of users connected to the sewerage network also increases the share of discharged water, the quality of which is controlled. | 
                            
                | Target value of the indicator and its evaluation |  | 
                            
                | Definition | Number of inhabitants permanently living in houses that are connected to the sewerage system for public use with a final WWTP. | 
                            
                | Measuring unit | Number of inhabitants | 
                            
                | Indicator disaggregation | By regions | 
                            
                | Reference period (resp. the period to which the indicator relates) | Year | 
                            
                | Related geographical area | CZ (NUTS 0), regions (NUTS 3) | 
                            
                | Comment |  |