1. One-out-all-out and other indicators
Diederik van der Molen
Barry van de Glind
The Netherlands
4 February 2019

2. Implementation in the Netherlands
Chemical status
O-o-a-o for priority substances
99% of individual measurements on priority substances: good
About 20% of the surface water bodies: failing to achieve GCS
We welcome new presentation in Directive 2013/39/EU
ubiquitous substances
Ecological status
O-o-a-o for 4 biological groups
O-o-a-o for 6 general physico-chemical elements
O-o-a-o for about 100 river basin specific pollutants
in 0.4% of the surface water bodies 100+ parameters are good
Ministry of Infrastructure and the Environment
4 February 2019

3. 0.4% GES/GEP, but
2/3 of the water bodies quality element Nutrients was good
25% of the water bodies quality element Fish was good
34% of the water bodies quality element Phytoplankton was good
19% of the water bodies all river basin specific pollutants were good
Ministry of Infrastructure and the Environment
4 February 2019

4. One-out-all-out method
… is good to illustrate in how many water bodies there are significant water management issues
… is depending on the monitoring effort and completeness of the assessment system
results are not comparable yet
… does not give a good illustration of the water status
<> perception of public and stake holders
… is insensitive for the effect of measures
problem with public & political support for measures
… does not inform on the relevant pressures
Ministry of Infrastructure and the Environment
4 February 2019

5. Alternative: illustration of ecological status
Diagram with all 4 biological quality elements and total
% of all surface water bodies
Including ‘not applicable’ (e.g. fish in coastal waters)
Including ‘unknown’ (missing values)
Total based on o-o-a-o
(light green = biology good, but problem with physico-chemistry or river basin specific pollutants)
Better illustration of the ecological status of surface water bodies
Ministry of Infrastructure and the Environment
4 February 2019

6. Alternative: progress in ecological status
2nd column in diagram
And/or indicator: average % high/good for all biological quality elements
(of the assessed water bodies)
= 24% in 2009
en 37% in 2015
Better indicator for the progress in the ecological status of surface water bodies
Ministry of Infrastructure and the Environment
4 February 2019

7. Alternative: river basin specific pollutants
Diagram with threshold-exceeding river basin specific pollutants
In % of all surface water bodies (including ‘unknown’)
Better indicator for the illustration of the status and the pressure
2nd column and/or
Indicator
Progress in status
Ministry of Infrastructure and the Environment
4 February 2019

8. Alternative: physico-chemical elements
Diagram with threshold exceeding physico-chemical elements
In % of all surface water bodies (including ‘unknown’)
Better indicator for the illustration of the status and pressures
2nd column and/or
Indicator
Progress in status
Ministry of Infrastructure and the Environment
4 February 2019

9. Alternative: pressures ecological status
Specific diagrams for the illustration of pressures:
Eutrophication: combination of phytoplankton in lakes/coastal, phytobenthos in rivers
Connectivity (only rivers): metrics on migrating fish
Hydromorphology: macro-invertebrates
2nd column for Progress in status
Use of partial biological metrics may be additional information compared to current reporting sheets
Ministry of Infrastructure and the Environment
4 February 2019

10. Status groundwater body (= additional information compared to current reporting sheets)
2009: o-o-a-o
2015: o-o-a-o
Groundwater dependent ecosystems
Water abstraction
Alternative:
Alternative:
Ministry of Infrastructure and the Environment
4 February 2019

11. Conclusions and recommendations
One-out-all-out necessary as indication for remaining significant water management issues
Alternatives/extra’s needed for
Presentation of the status
Indication of the progress
Visualisation of pressures
No extra data needed from member-status (except for groundwater)
“Status” for alternatives necessary, because
National debate focuses on EC-assessment-indicator
Uniformity for comparability between member status
Way forward
Agreement in wg D
Proposal to SCG
Adoption in guidance ?
Ministry of Infrastructure and the Environment
4 February 2019