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Document ID ca-on-pipwqom-2020-07-17 Title Proposed Interim Provincial Water Quality Objectives for Methoprene URL unknown Jurisdiction /ca/on Subdomain(s) Regulations & standards Language en Status completed Analyzed at 2026-03-29 20:59:20.698156+00:00 Relevance The document discusses the development of water quality objectives for chemicals.

Q Qualitative Requirements (2)

Req ID Category Intent Legal Status Name Subdomain(s) Context Conditions Confidence
#Q001operationaloperationalrecommendedMethoprene Risk Assessment Guideline Usageaquatic life, otherThe ministry has advised users interested in assessing the risk of methoprene for control of mosquito larvae in water to use the Canadian Council of Ministers of the Environment (CCME) Canadian Water Quality Guideline (CWQG).When assessing the risk of methoprene for control of mosquito larvae in waterhigh
#Q002administrativeoperationalmandatoryMethoprene Applicator Certificationaquatic life, otherMethoprene is sold for mosquito control in Canada under the trade name Altosid, and is classified as "Restricted", which signifies that it is only to be used by persons who are certified or licensed by provincial agencies.When applying methoprene for mosquito control (including in storm sewers, catch basins, and surface waters)high

P Quantitative Requirements (2)

Req ID Category Intent Legal Status Name Subdomain(s) Limit Type Limit Value Context Conditions Confidence
#P001chemicalunknownrecommendedMethoprene (non-target organisms)aquatic lifeMAC2.0 x 10-4 mg/LProposed Interim Provincial Water Quality Objective (iPWQO) for non-target organisms (Note: Ministry ultimately did not adopt this as a PWQO)high
#P002chemicalunknownrecommendedMethoprene (target organisms)aquatic lifeMAC1.0 x 10-6 mg/LProposed Interim Provincial Water Quality Objective (iPWQO) for target organisms (Note: Ministry ultimately did not adopt this as a PWQO)high

D Definitions (12)

Req ID Category Name Context Confidence
#D001Provincial Water Quality Objectives (PWQOs) and Interim Provincial Water Quality Objectives (iPWQO)maximum desirable concentrations of chemicals which ensure that surface waters are satisfactory for aquatic life and recreation.high
#D002EROEnvironmental Registry of Ontariohigh
#D003CCMECanadian Council of Ministers of the Environmenthigh
#D004CWQGsCanadian Water Quality Guidelineshigh
#D005PWQOProvincial Water Quality Objectivehigh
#D006iPWQOInterim Provincial Water Quality Objectivehigh
#D007mgmilligramhigh
#D008Llitrehigh
#D009ngnanogramhigh
#D010photolysischemical decomposition induced by lighthigh
#D011Restrictedsignifies that it is only to be used by persons who are certified or licensed by provincial agencieshigh
#D012insect growth regulatordisrupts the life cycle of the developing insect and prevents it from reaching maturityhigh