On September 23, 2020, Her Excellency the Right Honourable Julie Payette, Governor General of Canada, delivered the Speech from the Throne to open the second session of the 43rd Parliament and outline the government’s agenda.
Natural Resources Canada and the US Department of Homeland Security recently announced they will work together to promote harmonization of Precursor Chemical Regulations where achievable, and collectively limit impact on commerce.
The objective of this collaboration is to ensure that the Canadian and US requirements for hazard classification and communication remain aligned to the greatest extent possible and with the Global Harmonized System (GHS) as it is updated.
Where possible, the objective is to have one label and one safety data sheet (SDS) that would be acceptable in both countries, without reducing the level of safety or protection to workers.
The proposed guideline values are the following maximum acceptable concentrations; these values can be used alone or in combination: Total microcystins: 10 μg/L; Total cyanobacteria: 50 000 cells/mL; Total cyanobacterial biovolume: 4.5 mm3/L; Total chlorophyll a: 33 μg/L.
While CWWA normally doesn’t review the recreational guidelines our Committee is considering this one, due to the overlap in recreational water with drinking water quality.