Q-2, r. 40 - Regulation respecting the quality of drinking water

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15. The person in charge of a distribution system of a type referred to in Column 1 of the following table must, to control the substance indicated in Column 2, collect or have collected samples from the water supplied, at the minimum rate of at least 1 sample during each quarter beginning respectively on 1 January, 1 April, 1 July and 1 October of each year, with a minimum interval of 2 months between samplings.


Column 1 Column 2


Type of distribution system Substances


Water treated by ozonation Bromates


Water treated by chlorine dioxide Chlorites, chlorates

This section does not apply to the distribution facilities of such a distribution system that are supplied by another distribution system subject to the control of substances referred to in the first paragraph, as long as both systems are interconnected.
O.C. 647-2001, s. 15; O.C. 467-2005, s. 16; O.C. 70-2012, s. 18.
15. If the water supplied by a distribution system is treated by ozonation, the person in charge of the distribution system must, for the purpose of testing for bromates, collect or have at least 1 sample of the water supplied collected annually between 1 July and 1 October, or if the distribution system is not in service from 1 July to 1 October, at any other period when it is in service.
If the water supplied is disinfected with chloramines, the person in charge of the distribution system must also collect or have at least 1 sample of the water collected for the purposes of measuring, during the sampling, the concentration of chloramines and enter the results in the analysis request form furnished by the Minister of Sustainable Development, Environment and Parks.
This section does not apply to a distribution system supplied by another distribution system that is subject to the bromate and chloramine testing requirements.
O.C. 647-2001, s. 15; O.C. 467-2005, s. 16.