11.The person in charge of a distribution system must, for the control of total coliform bacteria and Escherichia coli bacteria, collect or have samples of the water supplied collected according to the frequency determined in the following table:
11.The person in charge of a distribution system must, for the control of total coliform bacteria and fecal coliform bacteria or Escherichia coli bacteria, collect or have samples of the water supplied collected according to the frequency determined in the following table:
Users Minimum number of samples to collect or to have collected per month __________________________________________________________________
21 to 1,000 persons 2 __________________________________________________________________
1,001 to 8,000 persons 8 __________________________________________________________________
8,001 to 100,000 persons 1 per 1,000 persons __________________________________________________________________
100,001 persons and over 100 + 1 per group of 10,000 persons exceeding 100,000 persons __________________________________________________________________
The samples to be collected pursuant to the first paragraph must be collected from the tap where the water is put at the disposal of users, after the water has run for at least 5 minutes and, for the same day of sampling, from the tap of different users. In addition, the water sampled must not have undergone treatment by an individual treatment system other than a system referred to in section 9.1.
Where possible, those samples shall be spread in equal numbers over each of the weeks in the month; if the number of samples is less than 4, they shall be collected at an interval of at least 7 days.
O.C. 647-2001, s. 11; O.C. 301-2002, s. 1; O.C. 467-2005, s. 12.