Urban Pollution Management

UKWIR’s Source Apportionment GIS Model (SAGIS): Version 3.0

Reference: 19/WW/02/10
ISBN: 978 1 84057 866 9
Published Date: 21/04/2019

The SAGIS modelling system has become an integral part of the United Kingdom’s surface water quality planning process. SAGIS (in combination with SIMCAT) facilitates the development of plans to achieve compliance with Water Framework Directive objectives.  The primary benefit of SAGIS is that it ensures the Water Industry is not targeting capital and carbon intensive treatment solutions to address pollution arising from other sectors, so ensuring that investment provides value for money for water customers.  Furthermore, SAGIS promotes a constructive working relationship between Water Companies and Regulators through encouraging the sharing of models and data, thereby eliminating unnecessary duplication of effort. This project has made SAGIS compatible with the latest versions of SIMCAT and MPER, a new metal bioavailability discharge permitting tool. Together with new model calibration methodologies and documentation, these developments are the most significant since the original SAGIS development. Project benefits include increased functionality and future-proofing of SAGIS.

This report is available in a set with UKWIR's published reports on Chemical Source Apportionment, available for purchase together at a reduced price of £600.

Price: £600  

Extending and Updating UKWIR's Pollution Source Apportionment Tool (2)

Reference: 18/WW/02/9
ISBN: 1 84057 851 3
Published Date: 29/04/2018

The SAGIS-SIMCAT modelling system underpins a significant part of the Water Industry’s water quality investment planning through providing the ability to develop effective evidence-based Programmes of Measures whilst maintaining the ‘Polluter Pays Principle’. SAGIS-SIMCAT will serve as the regulatory agencies primary catchment planning tool until at least 2027. This project has delivered improvements to SAGIS in three key areas, namely; (1) functionality enhancements to improve the representation of catchment processes, (2) data enhancements to align SAGIS with the second cycle of River Basin Management Planning requirements, and (3) a series of catchment investigations focusing on Natura 2000 sites that provide an up-to-date view on model performance, an understanding of the sources of chemicals and options to minimise the risk to compliance with water quality objectives.

This report is available in a set with UKWIR's published reports on Chemical Source Apportionment, available for purchase together at a reduced price of £600.

Price: £100  

WFD Requirements for Lakes, Transitional and Coastal Waters: Source Apportionment for Nutrients and Priority Chemicals

Reference: 13/WW/02/4
ISBN: 1 84057 743 6
Published Date: 15/12/2014

The key objective of this project was to expand the existing SAGIS river tool for metals, organic compounds and nutrients to assess source apportionment in lakes, transitional and coastal waters (SAGIS-LaTraC) from all major point and diffuse sources, using available national datasets. Additional export load databases were developed for export of chemicals associated with lakes, transitional and coastal water bodies including inputs from wildfowl, anglers (i.e. ground bait) and boats (i.e. biocides). A simple lake model was developed within the SAGIS framework to estimate chemical input loads from rivers, local catchments and within lake sources and to simulate within lake concentrations. Input loads are also calculated for chemical loads to estuaries and coastal water. The SAGIS databases and visualisation tools were modified to include updated source apportionment information for lakes, transitional waters and coastal water bodies to support river basin planning and wider environmental management.

The main report presents the outline methodologies used for the SAGIS-LaTraC tool and an example from the upgraded tool with Appendix A providing a user guide for the SAGIS-LaTraC tool. The methodologies in the main report are expanded in Appendix B to give further information on the methods used to generate input loads for the model and simulate chemical concentrations and loads. The validation report, Appendix C, presents a comparison of model outputs with observed data and outputs from the QUEST estuary model.

Price: £16