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Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
08:49

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Published on: May 15, 2017

Risk prioritisation of stormwater pollutant sources.

L Lundy1, J B Ellis, D M Revitt

  • 1Urban Pollution Research Centre, Middlesex University, The Burroughs, Hendon, London NW4 4BT, UK. L.Lundy@mdx.ac.uk

Water Research
|November 15, 2011
PubMed
Summary

This study introduces a new method to prioritize stormwater pollutants based on their likelihood of occurrence and impact severity. This approach helps manage diffuse pollution risks in catchments and select effective control strategies.

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Area of Science:

  • Environmental Science
  • Water Quality Management
  • Risk Assessment

Background:

  • Stormwater runoff carries pollutants from various land uses, impacting receiving water bodies.
  • Effective management requires prioritizing pollutants based on their potential risks.
  • Existing methods may lack transparency or flexibility in assessing diffuse pollution.

Purpose of the Study:

  • To develop a robust methodology for prioritizing stormwater pollutants.
  • To provide guidelines for assessing pollutant occurrence and impact.
  • To support decision-making in diffuse pollution control.

Main Methods:

  • Developed a risk prioritization framework evaluating 'likelihood of occurrence' and 'severity of impact'.
  • Applied the methodology to assess pollutants like total suspended solids, biochemical oxygen demand, lead, and cadmium.
  • Created a transparent and auditable benchmarking scheme for data synthesis.

Main Results:

  • Demonstrated a systematic approach to compare stormwater pollutant risks across different land uses.
  • The methodology successfully integrated chemical, physical, and ecological data.
  • Enabled comparative assessment of diffuse pollution risks at a catchment scale.

Conclusions:

  • The developed methodology offers a flexible and auditable tool for stormwater pollutant risk assessment.
  • It aids practitioners in prioritizing pollution sources and selecting appropriate mitigation strategies.
  • Enhances the management of diffuse pollution to protect receiving water quality.