Decision Support Tool for

 

the development of a setting-specific strategy against the occurrence of cyanotoxins in
drinking-water, from catchment to consumer

 

Purpose: to analyse, assess and manage the risk of cyanotoxin occurrence

Steps to take with the help of this tool:

Why are cyanotoxins a risk in drinking-water? 
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For whom is this decision support tool? 
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This approach is based on the Water Safety Plan Concept proposed by the new WHO Guidelines for Drinking-water Quality 
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è     Worksheet for your entries (computer or colour printer)

 

This decision support tool is intended for further development, also in supporting WHO guidance on toxic cyanobacteria. Feed-back to the publishers therefore is most welcome !

 

Publishers: Ingrid Chorus & Verena Niesel, UBA

 

Acknowledgements: This decision support tool was developed by the EU Project “PEPCY” (Toxic and bioactive PEPtides in CYanobacteria, grant no. QLRT-2001-02634), based on a first draft in German developed in a project funded by the German Federal Ministry of Education and  Research (grant no. 02WT9852/7).

 

 

 

 

1. Define direct and indirect targets

2. Preparatory steps

 

2.1 Compile a team with the necessary expertise  

 

2.2 Describe the water supply / recreational system

 

2.3 Describe water use and users

3.     Assess risk and system performance

3.1 for cyanobacterial proliferation in raw water / at recreational sites

3.2 for cyanotoxin intake and breakthrough in treatment

3.3   Evaluate your assessment  for 3.1  / for 3.2 in relation to other health hazards from exposure to water and document it

4. Define control measures

      4.1 in catchment management

      4.2 in water-body management

      4.3 in drinking-water offtake

      4.4 in drinking-water treatment

4.5   Document your choice of control measures together with the reasons for your choice; develop management plans for each and a plan for early warning / contingency supply

5. Validate your assessment and your control measures

     support from Literature and Cyano Websites

6. Verify that your water does not contain cyanotoxins at concentrations above your target

7. Cyanotoxin-building block for your Water Safety Plan