WEISS - Water Emission Inventory Support System

WEISS is an information system aimed at mapping all relevant pollution caused by major emission sources and their pathways to the water bodies in a geographically detailed manner. WEISS supports monitoring, reporting, analyzing and assessing various abatement measures aimed at reducing the pollution of the water bodies.

Achieving a good status of the water bodies is far from simple, especially in highly urbanized and densely populated regions. Moreover, the increasing urban sprawl in Europe complicates the development of effective wastewater treatment systems. Integral water management requires measures for cost-effective improvement of the water quality. This is possible by monitoring the current water quality, but more efficiently by identifying and estimating the individual sources of pollution, so that targeted measures can be taken to mitigate or phase out the pollution.

WEISS provides answers to policy relevant questions such as:

  • Which sources of pollution are responsible for the observed water quality and what is the contribution of each source?
  • How much of the pollution actually ends up in the surface water?
  • What is the contribution of the sewage infrastructure measures in the abatement?
  •  How does water quality in the river basins evolve over the years?
  • Where is the investment in additional urban waste water treatment plants most effective?
  • Which and where are non-quantified sources of pollution in any given area?
  • Which are the most effective abatement options?

WEISS investigates the location and size of sources of pollution as accurately as possible, as well as the routes along which the pollution reaches the surface water. Such data are to be gathered and reported in regional, national and European inventorying and registration systems, with a view to propose cost effective measures that contribute to the achievement of the specified environmental objectives.

WEISS manages data for among others the following (mandatory) reporting at EU-level:

  • The inventory of emissions, losses and discharges (Directive 2008/105/EC EQS)
  • Collection and treatment of urban wastewater (UWWT Directive)
  • European Pollutant Release and Transfer Register regulation (E-PRTR). Reporting by operators (art. 5) and Releases from diffuse sources (art. 9)
  • State of Environment (SoE) assessment of Europe’s water environment (SoE emissions)

WEISS assists in designing and implementing targeted reduction and phasing out measures with respect to priority and priority hazardous substances. It enables to:

  • analyze emission trends and other indicators over time, also in the future.
  • assess the efficiency of the River Basin Management Plans (RBMP) and Programme of Measures (PoM);
  • identify gaps in knowledge and define the need to carry out studies/campaigns or develop strategies/policies.

WEISS as a decision support system

WEISS is a user-friendly application that handles the bottom-up and/or top-down allocation and modelling of pollutants from point and diffuse sources to the surface waters. It models the amounts of pollutants emitted by the sources, models the pathways that the pollutants follow from the source to the surface waters, and produces reports with the totals per substance, per source, per node in the transportation routes, etc. Both the list of sources and substances represented can be extended or amended at any time.

Mapping, visualization, and analyses of results are possible at various levels of detail: per source or group of sources, per substance or group of substances, per node or group of nodes of the transportation routes, per raster cell, group of raster cells or administrative entities, ...

The WEISS system can be applied to areas of different size: from industrial or rural complexes to entire EU Member States or from small sub-catchments to large transnational river basins. But, most importantly, WEISS can be applied in data rich as well as data poor conditions. To the effect, it is equipped with a set of algorithms that can be applied under all circumstances. WEISS applications can thus start-up as fairly simple and coarse applications but evolve rapidly as new or better data become available.

WEISS features a number of functions, tools and domain models built on request for users such as Vlaamse Milieumaatschappij (VMM), Brussel Leefmilieu (BIM) / Bruxelles Environnement (IBGE) and Service Public de Wallonie (SPW-DGARNE) and Port of Antwerp.

Below you can find more detailed infomation about WEISS or contact our team to see how we can assist you.