| Relevance/rationale of the indicator (resp. why the indicator was chosen to measure the target and how it is suitable for these purposes) |
Good chemical status of the water body is required if the concentration of the required heavy metals and several dozen other substances (eg polycyclic aromatic hydrocarbons and some pesticides) does not exceed the set maximum permitted value. |
| Target value of the indicator and its evaluation |
|
| Definition |
The indicator is calculated as the share of the number of surface, resp. groundwater bodies, achieving good chemical status, on the total number of surface, resp. groundwater bodies, as defined in the Water Framework Directive. |
| Measuring unit |
% |
| Indicator disaggregation |
By surface water bodies in a good chemical condition
By groundwater bodies in a good chemical condition
By sub-basins of river |
| Reference period (resp. the period to which the indicator relates) |
Year |
| Related geographical area |
CZ (NUTS 0) |
| Comment |
|
