Registration Dossier

Environmental fate & pathways

Monitoring data

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Administrative data

Endpoint:
monitoring data
Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
Member states reported data on monitored concentrations to the EU Commission that were supposed to be relevant for general water quality. However, analysis has demonstrated that the data were not always answering that definition. Still, this data review was at EU scale was unique and is therefore reported. The chemical safety assessment of zinc potassium chromate is based on elemental zinc and chromate concentrations and read across to zinc and chromate substances. Justification for read across from Zn and Cr(III) is provided in the endpoint summary section.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report Date:
2009

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Member states were asked by the EU Commission to report monitored data on substances in water, that were to be relevant for assessing the general quality of the waters. Data were processed by the International Office of Water and INERIS.
GLP compliance:
not specified
Type of measurement:
other: data reflect general water quality
Media:
surface water

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Data were reported for "Zinc". So, no distinction was made between different sources/forms of zinc resulting in the final measured concentration.

Study design

Details on sampling:
data were compiled for 5881 sampling stations throughout the EU, on a total of 118827 analyses. Data are from the period 2000-2008.

Results and discussion

Concentrationopen allclose all
Country:
other: EU
Location:
90P for the EU as a whole
Substance or metabolite:
substance
Conc.:
32 µg/L
Remarks on result:
other: total zinc concentration, 5881 stations
Country:
Austria
Location:
country 90P
Substance or metabolite:
substance
Conc.:
5.94 µg/L
Remarks on result:
other: total zinc concentration, 383 stations
Country:
Belgium
Location:
country 90P
Substance or metabolite:
substance
Conc.:
30.55 µg/L
Remarks on result:
other: total zinc concentration, 27 stations
Country:
Cyprus
Location:
country 90P
Substance or metabolite:
substance
Conc.:
121.7 µg/L
Remarks on result:
other: total concentration, 31 stations. 90P is related to monitoring of mixed waste dump site
Country:
Czech Republic
Location:
country 90P
Substance or metabolite:
substance
Conc.:
38.47 µg/L
Remarks on result:
other: total concentration, 312 stations.
Country:
Denmark
Location:
country 90P
Substance or metabolite:
substance
Conc.:
21.41 µg/L
Remarks on result:
other: total concentration, 16 stations
Country:
Estonia
Location:
country 90P
Substance or metabolite:
substance
Conc.:
19.82 µg/L
Remarks on result:
other: total concentration, 11 stations
Country:
France
Location:
country 90P
Substance or metabolite:
substance
Conc.:
36.28 µg/L
Remarks on result:
other: total concentration, 968 stations
Country:
Germany
Location:
country 90P
Substance or metabolite:
substance
Conc.:
36.22 µg/L
Remarks on result:
other: total concentration, 200 stations
Country:
Greece
Location:
country 90P
Substance or metabolite:
substance
Conc.:
38.36 µg/L
Remarks on result:
other: total concentration, 165 stations
Country:
Lithuania
Location:
country 90P
Substance or metabolite:
substance
Conc.:
35.55 µg/L
Remarks on result:
other: total concentration, 21 stations
Country:
Luxembourg
Location:
country 90P
Substance or metabolite:
substance
Conc.:
31.15 µg/L
Remarks on result:
other: total concentration, 7 stations
Country:
Netherlands
Location:
country 90P
Substance or metabolite:
substance
Conc.:
29.82 µg/L
Remarks on result:
other: total concentration, 32 stations
Country:
Portugal
Location:
country 90P
Substance or metabolite:
substance
Conc.:
21.28 µg/L
Remarks on result:
other: total concentration, 318 stations
Country:
Romania
Location:
country 90P
Substance or metabolite:
substance
Conc.:
64.85 µg/L
Remarks on result:
other: total concentration, 104 stations. 90P is related to monitoring of industrial point sources and mining areas, as well as to local metal-enriched geology
Country:
Slovakia
Location:
country 90P
Substance or metabolite:
substance
Conc.:
93.71 µg/L
Remarks on result:
other: total concentration, 27 stations. 90P is related to monitoring of industrial point sources and mining areas, as well as to local metal-enriched geology
Country:
United Kingdom
Location:
country 90P
Substance or metabolite:
substance
Conc.:
26.78 µg/L
Remarks on result:
other: total concentration, 3254 stations.
Details on results:
"whole water" (= total) zinc concentrations are reported from the period 2000-2008.. Country 90P values calculated from <30 stations are not statistically reliable. In some countries (Cyprus, Romania, Slovakia, sampling points are influenced by industrial point source emissions, and/or emissions from historical mining, and/or local metal-enriched geology.

Applicant's summary and conclusion

Conclusions:
Given the scale and recent date of the study, the results are considered relevant for assessing current water quallity. It has to be noted that for several countries, the dataset contains data from sampling sites, specially chosed to monitor emissions from industrial point sources. As such, the data do not always reflect general water quality, but rather the local situation.
Executive summary:

The overall EU 90P value for total zinc concentrations in water, based on 5881 sampling stations, is 32 µg Zn/l.

Individual country data are given in the "results" section.