In Ontario, there are approximately 450 non-municipal systems that provide water to people’s homes, such as privately owned systems that serve apartment buildings, private subdivisions and mobile home parks, called non-municipal year-round residential systems.
There are also approximately 1,500 systems that provide water to people who may be more vulnerable to drinking water contamination, such as those using day nurseries, schools and health care centres, called designated facilities.
These systems are regulated by the Ministry of the Environment.
Owners and operators of these systems must ensure their systems—and the water their systems provide—meet the requirements of the Safe Drinking Water Act.
The act requires every owner and operator to ensure:
If you have questions about your responsibilities, the drinking water help line is open Monday through Friday, from 9 a.m. to 5 p.m. at 1-866-793-2588.