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MOECC approves changes to Ontario’s drinking water quality standards, testing and reporting requirements


January 13, 2016
By Ontario Water Works Association

Toronto – The Ministry of the Environment and Climate Change has approved changes to Ontario Regulations 170/03 and 169/03 that strengthen standards and clarify testing requirements, the Ontario Water Works Association reported on its website.

Details of the changes can be found in the Environmental Bill of Rights decision notice.

According to the OWWA, the amendments:

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  • Strengthen standards for arsenic, carbon tetrachloride, benzene and vinyl chloride;
  • Adopt new standards for chlorate, chlorite, 2-methyl-4-chlorophenoxyacetic acid (MCPA) and haloacetic acids (HAAs);
  • Clarify/optimize testing, sampling and reporting requirements for trihalomethanes (THMs) and HAAs; and
  • Remove 13 pesticides from testing requirements.