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Methodology for obtaining data
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Data on the annual emission load of pollutants from point sources and diffuse sources, aggregated by spatial unit, as well as riverine input loads aggregated per monitoring site (flux station) and direct discharges to the sea aggregated at water body level (transitional and coastal waters).
All parameters (nutrients, organic load, hazardous substances) are available in a single code list. The estimated annual loads should be expressed in tonne per year (t/a) for nutrients and organic load, and in kilogram per year (kg/a) for other pollutants.
All source categories (point and diffuse) are available in a single code list.
1. Coverage and reference period
For calculated or measured annual loads from point sources, data providers should submit data collected up to the end of the previous year (e.g. in 2017, submit data collected until the end of 2016). If the national inventories are not compiled and delivered on a yearly basis, then a 2-year reporting interval for emission from point sources is requested.
For estimated or modeled annual loads from diffuse sources, a maximum 6-year reporting interval is requested, but if new data are available, a 3-year reporting interval is appreciated.
2. Data content
Emissions should be reported at the RBD sub-unit level for all parameters and source categories. If reporting at sub-unit level is not possible (or if the river basin district is not divided in sub-units), then data should be aggregated by river basin district. Reporting at country level should be used only in the exceptional cases when river basin districts are not delineated.
Direct discharges to the sea are requested at the water body level (coastal and transitional water bodies).
Riverine input loads are requested at the monitoring site level (flux station).
Information already reported under reporting obligations on WFD, UWWTD or the E-PRTR is not expected to be re-submitted under WISE SoE Emissions. For each relevant substance, annual emissions already reported under E-PRTR will be included in the European data set (Waterbase - Emissions). Available data (including those reported under WFD and UWWTD) will be used in developing subsequent assessments.
However, to improve the quality of these assessments, it would be much appreciated if Member Countries could provide data more detailed or more complete than those reported under the WFD, UWWTD or E-PRTR to the SoE Emissions. Regarding the synergies with the WFD, reporting under the WFD obligation (http://rod.eionet.europa.eu/obligations/715) can refer to data reported here under the WISE SoE data flow.
3. Source oriented approach
Submit emission data from source (gross) oriented approach. Source (gross) approaches estimate the emission to - but not within - an inland water body and do not account for retention (loss) processes within that water body.
Load or net approaches describe a total pollutant load at the river mouth or downstream point and account for in-river processes. This is collected under the riverine inputs and direct discharges tables.
4. Source categories
A phased approach to reporting is expected, with the detail of emission apportionment increasing progressively over time.
Point sources are categorised as follows:
PT – Point sources
U – Point - Urban waste water
U1 – Point - Urban waste water - untreated
U11 – Point - Urban waste water - untreated - less than 2000 p.e.
U12 – Point - Urban waste water - untreated - between 2000 and 10000 p.e.
U13 – Point - Urban waste water - untreated - between 10000 and 100000 p.e.
U14 – Point - Urban waste water - untreated - more than 100000 p.e.
U2 – Point - Urban waste water - treated
U21 – Point - Urban waste water - treated - less than 2000 p.e.
U22 – Point - Urban waste water - treated - between 2000 and 10000 p.e.
U23 – Point - Urban waste water - treated - between 10000 and 100000 p.e.
U24 – Point - Urban waste water - treated - more than 100000 p.e.
I – Point sources - Industrial waste water
I3 – Point - Industrial waste water - treated
I4 – Point - Industrial waste water - untreated
O – Point - Other point emissions
O1 – Point - Contaminated sites or abandoned industrial sites
O2 – Point - Waste disposal sites
O3 – Point - Mine waters
O4 – Point - Aquaculture
The hierarchical structure of the point source categories allows the reporting at the level of disaggregation most compatible with the national inventories.
Categories O1, O2, O3 and O4 were introduced in the point sources category list to allow a better alignment with the Water Framework Directive list of pressures.
Municipal/urban waste water includes water from households, SMEs, industrial waste water, and urban run-off, discharged to the municipal/urban sewer system.
Emissions from agglomerations with less than 2000 p.e. (U11 and U21) are requested only if significant (see also category NP3 under diffuse pollution).
Diffuse sources are categorised as follows:
NP – Diffuse sources
NP1 – Diffuse - Agricultural emissions
NP2 – Diffuse - Atmospheric deposition
NP3 – Diffuse - Un-connected dwellings emissions
NP4 – Diffuse - Urban run-off
NP5 – Diffuse - Storm overflow emissions
NP7 – Diffuse - Other diffuse emissions
NP71 – Diffuse - Forestry emissions
NP72 – Diffuse - Transport emissions
NP73 – Diffuse - Mining emissions
NP74 – Diffuse - Aquaculture emissions
NP8 – Diffuse - Background emissions
Categories NP71, NP72, NP73 and NP74 were introduced in the diffuse sources category list to allow a better alignment with the Water Framework Directive list of pressures.
The hierarchical structure of the NP7 category allows the reporting at the level of disaggregation most compatible with the national data.
The sources expected to be used for the reporting of direct discharges are U, I and/or PT.
5. Decimal separators
Use a decimal point '.' as the decimal separator. Do not use a comma ','.
6. Missing values and other exceptional situations
If the emissions value is not reported, or in other exceptional circumstances (deleting or confirmation of the record, observed value source categories should / can be precised,...), the new field Observation status flag and the Remarks field should be used to provide further clarification.
7. Other recommendations
If detailed source category data is reported, then do NOT report redundant data from upper level source category. For example: if, for a given determinand, source categories 'I3' and 'I4' are both reported, then it is not necessary to report the sum of emissions under source category 'I'.
Exception: The category NP7 can cover not only the sub-categories NP71 .. NP74, but also emissions from other diffuse sources not included in these sub-categories and missing in the diffuse sources list. In such case, category NP7 should be reported together with all its sub-categories NP1, NP2, NP3 and NP4.
Source categories at different hierarchical level may be reported if a full disaggregation is not available. For example, an estimate may be available for source categories 'O' and 'O1' (but disaggregated values are not available for 'O2', 'O3' and 'O4').
Please provide long time series without gaps and as complete a geographic coverage as possible.
8. Spatial reference data
The data reported under the WISE SoE Emissions data flow must be linked to specific spatial units (a monitoring site, a water body, a RBD sub-unit, a river basin district, or, in exceptional cases, a country), using a unique identifier.
During the quality control procedures of the data reported under the WISE SoE Emissions, the consistency of these spatial unit identifiers will be checked against the spatial data reported under the WISE Spatial data flow (WISE-5).
The location, identification and characteristics of new spatial units must be provided via WISE-5. Please note that the spatial data don't have to be reported annually. However, updates to the spatial data (e.g. new sub-units, changes in the identifiers, etc.) should be reported.
9. Reporting format and delivery
Use the reporting templates (MS Excel or XML schemas) and these specifications when formatting and collating the data delivery. The templates can be downloaded from the Data Dictionary.
Data can be delivered in XML files or in MS Excel file format (XLS or XLSX). Please do not use formulas in MS Excel files and do not rename the worksheets or column names. The file name can be renamed.
Delivery can be split into multiple files if necessary. All the files must, however, be uploaded to the same envelope.
Upload the data files to the Central Data Repository at http://cdr.eionet.europa.eu/.
A WISE SoE Emissions folder will be created by the EEA under your country’s collection.
If you have any questions about the format and content of the data request please contact the WISE SoE helpdesk, e-mail: wisesoe.helpdesk@eionet.europa.eu
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