|
|
|
In 1997,quality of surface water in
Slovakia was monitored at 254 basic and 6 special sampling sites. At the
basic sampling sites, the following indicators were monitored: oxygen
demand indicators
(A-group),
basic chemical indicators
(B-group)
and additional chemical indicators (C-group),
biological
and microbiological indicators (E-group).
At selected places, also heavy metals (D-group)
and radioactivity indicators (F-group)
were monitored. Assessment process was carried out in compliance with STN
75 7221 Standard. This standard recognises 5 water quality
categories - from category I (very clean water) to category V (extremely
heavily polluted water).
(See also Acidification
of Surface Water )
List of monitored surface water in sampling sites (1997)
| Catchment area |
|
|
|
|
|
|
|
|
| Dunaj | 44 | - | 855.5 |
| Váh | 56 | 5 | 1 422.5 |
| Hron | 52 | - | 1 269.6 |
| Bodrog and Hornád | 102 | 1 | 1 746.9 |
| Total | 254 | 6 | 5 294.5 |
The
Danube River Catchment Area
The
Váh River Catchment Area
The
Hron River Catchment Area
The
Bodrog and Hornád River Catchment Area
Trend in the quality of surface water in Slovakia for selected indices
during period 1993-1997 in characteristic sampling sites of main water
courses
| Dunaj - Štúrovo 1718.8 km | Morava - Devínska Nová Ves 15 km |
 |
 |
| Váh - Selice 47.7 km | Nitra - Komoča 6.5 km |
 |
 |
| Hron - Kamenín 10.9 km | Slaná - Lenártovce 3.6 km |
 |
 |
| Hornád - Ždaňa 17.2 km | Bodrog - Streda nad Bodrogom 6.0 km |
 |
 |
Source: SHMÚ