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Questions to guide you through assessing the risk of cyanotoxin occurrence and breakthrough and your system’s performance in controlling these risks:
Questionnaire Part I: for cyanobacterial proliferation in raw water / at recreational sites
Questionnaire Part II: for
cyanotoxin intake and breakthrough in treatment
è Document your risk and system assessment, e.g. in the worksheet provided on the starting page of this decision
support tool.
Note: assessing the risk to human health is inherently a comprehensive exercise, covering and comparing the full range of hazards encountered by exposure to water. There is benefit in undertaking this for hazards comprehensively, as most measures to control hazards will be effective against a range of them. Optimising the choice of methods therefore depends on having comprehensively assessed risks.
See è Cyanotoxins in the context of risks
from other hazards for guidance on prioritising risks
Evaluating your assessments: Evaluation of part I: assessment of the risk of
cyanobacterial proliferation
Evaluation of part II: assessment of the risk of cyanotoxin intake
or breakthrough
Back to è START