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Modelling pesticide risk for different land management practice scenarios on raw water quality, including development of an intervention toolkit - WT2201

The project should develop a UK methodology or framework for identification of metaldehyde (and other high risk actives)hot-spots. The scope of activity breaks down into 4 main areas:

The project should identify an approach which adds value to the existing catchment characterisation approaches water companies are using, and an initial phase of the project should include a review of the currently available data sets, tools, models and approaches to establish what is already available

Data/Modelling Needs
- The project should then build on this foundation to produce an output that allows greater targeting of measures. This will include the review of the EA "Four Scope project" and outputs from the UKWIR Project DW14B (Evidence Review of Strategies for Managing Metaldehyde).

Intervention trials:
- Identify a number of potential interventions for the mitigation of risks to raw water quality, e.g. changes in sprayer nozzle type; pellets with different active ingredient concentrations; types of pellets used adjacent to watercourses or on field edges; different product dose rates; location of pesticide applications in relation to Water Treatment Works intakes; changing crop type in high risk areas; widespread uptake of improved farmyard pesticide handling infrastructure; agricultural polymers for water/pesticide absorbance prior to entering the water course; etc,. Scenario test these at a sub-catchment or ideally field level, calibrated with empirical water quality data, to understand the relative impact and optimum mix of localised changes in land and farmyard management practices, on concentrations of the pesticides at works intakes.

Intervention toolkit:
Develop an agreed matrix of interventions and their leads which will allow the most effective working between Water Companies, Regulators and representatives of agriculture, and allow more effective spatial targetting of agri-advice messages. This should focus on specific ‘high risk’ actives such as metladehyde & OSR herbicides, especially those where current treatment is less effective and the focus is on reducing concentrations at intakes.
To follow
Project Documents
• FRP - Final Report : abstract -UKWIR   (10k)
• EXE - Executive Summary : DWI70-2-302-phase1-exsum   (190k)
Time-Scale and Cost
From: 2014

To: 2015

Cost: £10,000
Contractor / Funded Organisations
UK Water Industry Research Ltd
Drinking Water              
Water Quality              
Water Supply