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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Monitoring data

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Administrative data

Endpoint:
monitoring data
Type of information:
experimental study
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 zinc 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.

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. Data are from the period 2000-2008.
GLP compliance:
not specified
Type of measurement:
other: data reflect general water quality
Media:
surface water

Test material

Constituent 1
Chemical structure
Reference substance name:
Zinc
EC Number:
231-175-3
EC Name:
Zinc
Cas Number:
7440-66-6
Molecular formula:
Zn
IUPAC Name:
zinc
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 the indicated number of stations for each country.

Results and discussion

Concentrationopen allclose all
Country:
Belgium
Location:
country 90P
Substance or metabolite:
substance
Conc.:
12.05 µg/L
Remarks on result:
other: dissolved concentration, 7 stations.
Country:
Estonia
Location:
country 90P
Substance or metabolite:
substance
Conc.:
12.79 µg/L
Remarks on result:
other: dissolved concentration, 10 stations
Country:
Germany
Location:
country 90P
Substance or metabolite:
substance
Conc.:
55.95 µg/L
Remarks on result:
other: dissolved concentrations, 20 stations. The 90P is related to the monitoring of direct emissions from historically contaminated mining sites
Country:
Italy
Location:
country 90P
Substance or metabolite:
substance
Conc.:
31.02 µg/L
Remarks on result:
other: dissolved concentration, 275 stations. The 90P is related to local metal-enriched geology in the Piemonte area.
Country:
Netherlands (the)
Location:
country 90P
Substance or metabolite:
substance
Conc.:
11.41 µg/L
Remarks on result:
other: dissolved concentration, 42 stations
Country:
Portugal
Location:
country 90P
Substance or metabolite:
substance
Conc.:
0.25 µg/L
Remarks on result:
other: dissolved concentration, 75 stations
Country:
Romania
Location:
country 90P
Substance or metabolite:
substance
Conc.:
39.97 µg/L
Remarks on result:
other: dissolved concentration, 104 stations. 90P is related to monitoring of industrial point sources and mining areas, as well as to local metal-enriched geology
Country:
Slovenia
Location:
country 90P
Substance or metabolite:
substance
Conc.:
6.3 µg/L
Remarks on result:
other: dissolved concentrations, 19 stations
Details on results:
"dissolved fraction" (= dissolved ) zinc concentrations from the period 2000-2008 are reported. Country 90P values calculated from <30 stations are not statistically reliable. In some countries (germany, Italy, Romania, sampling points are influenced by industrial point source emissions, and/or emissions from historical mining, and/or local metal-enriched geology.
Value for Spain is not reported because major problems with the definition of the fraction was observed. For nthis reason, the overall 90P for the EU cannot be recalculated and reported, neither.

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 dissolved zinc concentrations in watercannot be calculated, because of methodological errors in the Spanish dataset. the 90P values for the indivuidual countries are given in the results section.