| Vulnerability class |
Surface of area of particular clas-ses of vulnerability [km2] |
Practical specification of vulnerability classes (developed on the basis of Foster et.al. 2002) |
| DRASTICindex |
CD index |
NV index |
| Avery low |
<1 |
<1 |
<1 |
Practically no vulnerability of groundwater to contamina-tion |
| B low |
13 |
2 |
426 |
Vulnerability of groundwater to conservative contamina-tion in their constant effect. |
| C medium |
324 |
247 |
136 |
Vulnerability of groundwater to some contamination,mainly conservative in conditions of their constant effect. |
| D moderately-high |
229 |
340 |
57 |
Vulnerability of groundwater to some contamination, but only in conditions of their constant effect. |
| E high |
53 |
30 |
<1 |
Vulnerability of groundwater to a lot of contamination and fast activity of contamination in many situations. |
| F very high |
<1 |
<1 |
<1 |
Vulnerability of groundwater to a lot of contamination and fast activity of contamination in most situations. |
