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Category of Drinking Water
System |
Definition |
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Large Municipal Residential System |
A municipal drinking water system that serves a major residential development and serves more than 100 private residences. |
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Small Municipal Residential System |
A municipal drinking water system that serves a major residential development but serves fewer than 101 private residences |
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Large Municipal Non-Residential System |
A municipal drinking water system that does not serve a major residential development and is capable of supplying drinking water at a rate of more than 2.9 litres per second (L/s) |
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Small Municipal Non-Residential System |
A municipal drinking water system that does not serve a major residential development, is not capable of supplying drinking water at a rate of more than 2.9 L/s and serves a designated facility or a public facility. |
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Non-Municipal Year-Round Residential System |
A non-municipal drinking water system that is not a seasonal system and serves a major residential development or a trailer park or campground that has more than five service connections. |
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Non-Municipal Seasonal Residential System |
A non-municipal drinking water system that is a seasonal system and serves a major residential development or a trailer park or campground that has more than five service connections. |
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Large Non-Municipal Non-Residential System |
A non-municipal drinking water system that is capable of supplying drinking water at a rate of more than 2.9 L/s and does not serve a major residential development or a trailer park or campground that has more than five service connections. |
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Small Non-Municipal Non-Residential System |
A
non-municipal drinking water system that is not capable of supplying
drinking water at a rate of more than 2.9 L/s, serves a designated
facility or public facility and does not serve a major residential
development or a trailer park or campground that has more than five
service connections. |
Drinking water systems require a Professional Engineer to prepare an evaluation report and certify that the water system is in compliance with the regulatory requirements and must be operated by certified operators. The minimum treatment requirements are:
The deadlines for meeting the minimum treatment requirements, along with the Engineering Evaluation Report and Owner’s Notice to the MOE Director for each of the eight categories are listed in O. Reg. 170/03. Please note that the Engineering Evaluation Report and the Engineer’s Certification Letter are required every 5 years for a surface water or groundwater under the direct influence of surface water and every 10 years for a groundwater site not under the direct influence of surface water.
The requirement for an Engineering
Evaluation Report does not apply if the drinking water system received an OWRA
Section 52 Certificate of Approval after
There is no relief from minimum treatment requirements for surface water and groundwater under the direct influence of surface water. For groundwater sources not under the direct influence of surface water there is potential for relief if it can be shown that there is no risk to the public and that the water is safe. Relief would also require the development of a risk analysis and management plan.
Finally, the following are related Regulations:
O. Reg. 169/03: Ontario Drinking Water Quality Standards
O. Reg. 170/03: Drinking-Water Systems
O. Reg. 171/03: Definitions of Words and Expressions used in the Act (Safe Drinking Water Act, 2002)
O. Reg. 172/03: Definitions of “Deficiency” and “Municipal Drinking Water System”
O. Reg. 173/03: Schools, Private Schools and Day Nurseries
O.
Reg. 174/03: Amends
O.
Reg. 175/03: Revokes
O.
Reg. 176/03: Revokes
O.
Reg. 177/03: Amends
For more information on how Altech can assist please contact Henri van Rensburg by email or phone at 1-800-323-4937 Ext. 230.