1. Dangerous Substances Assessment under Art
Dangerous Substances Assessment under Art. 5 of WFD in the Czech Republic
Petr Vyskoc
T.G. Masaryk Water Research Institute,
Podbabska 30, Praha 6,
internet:
, WRI T.G.M., Prague

2. Initial Information Area: 79 000 km2 Population: 10 mil.
(I)RBDs: Elbe, Danube, Oder
Art. 5 assessment: uniform methodologies (TGM Water Research Institute) applied by 5 regional (sub-basins) Water Companies

3. Water Bodies Surface water bodies Groundwater bodies
1100 SWB, avg. length 17 km, avg. sub-basin 75 km2
risk categories: at risk / uncertain / not at risk
Groundwater bodies
161 GWB in 3 layers (upper, main, deep), avg. area 500 km2
risk categories: at risk / not at risk (plus reliability)
No transitional nor coastal WB

4. Selection of Pollutants
Dangerous substances
Annex X of WFD
List 1 and 2 of 76/464/EEC (surface water)
List 1 and 2 of 80/68/EEC (groundwater)
National survey ( ): DS in Czechia
production, storing, usage, discharge …
screening monitoring ( )
regular monitoring (since 2003)
cca 80 substances assessed under Art. 5

5. EQS Setting, Derivation of National Quality Standards
Preliminary objectives (threshold values)
Surface water
Proposals for Quality standards for Priority Substances of the WFD (2003): Draft table
other substances: PNEC (if below detection limit - detection limit applied)
Groundwater
Drinking water limits
Remediation limits

6. Risk Assessment of Water Bodies (1)
Direct: monitoring data
Indirect: pressures assessment
2003 current state
2015 foreseen scenario
Decision matrix

7. Risk Assessment of Water Bodies (2) (Decision Matrix)
Applied to each substance
Overall assessment: „one out all out“ principle (except metals - expert judgement)

8. Pressure Data Point Sources
surface water
76/464/EEC data:
discharge sites (500), usage, volume and concentration (actual/authorised)
only annual data available
groundwater
old contaminated sites (3000) and pollutant concentrations in groundwater

9. Pressure Assessment (SWB) point source pollution

10. Pressure Data and Assessment Diffuse sources (SW and GW)
Pesticides (atrazine)
GIS analysis:
usage data (administrative units-NUTS)
land use (CORINE)
vulnerability of soil and subsoil (GW only)
SWB catchment area/ GWB area

11. State monitoring network
Monitoring Data
State monitoring network
270 surface water monitoring sites (monthly frequence)
430 groundwater monitoring sites (annualy)

12. Monitoring sites - Surface Water

13. Results: WB at Risk from Dangerous Substances
Surface water:
22 % of SWB at risk, 6% uncertain
Groundwater: 28 % of GWB area at risk

14. Results (2): Map of SWB at Risk from Dangerous Substances

15. Gaps, Uncertainties and Future Work
EQS and threshold values
Biota and sediment threshold values
Natural background concentration of metals
Pressure assessment
Interaction between surface and groundwater
Quantification of diffuse sources pollution
Monitoring data and programmes
Operational and investigative monitoring
Update of risk assessment in 2007

16. Thank you
for your attention