What is a Small Drinking Water System (SDWS)?
A SDWS may be a privately or publicly owned or operated drinking water system that provides non-municipal drinking water to the public. These systems use private wells and/or cisterns or surface water drawn from rivers, lakes or ponds and are common in rural areas. Some examples of SDWS may include:
- seasonal trailer parks or campgrounds with six or more connections
- restaurants on private water systems
- hotels, motels and bed and breakfast accommodations
- libraries
- gas stations with public washrooms
- recreational and athletic facilities
- places of worship
- places where service clubs and fraternal organizations meet
- any place where the general public has access to a drinking water fountain, shower or washroom
Email accesshalton@halton.ca or call 311 to contact Halton Region Public Health if you have questions or are unsure if your system is a SDWS.
Regulations and Inspections
Since December of 2008, public health units in Ontario have been responsible for inspecting and monitoring SDWS.
SDWS owners and operators must comply with Ontario Regulation 319/08: Small Drinking Water Systems (external link) under the Health Protection and Promotion Act (external link), which sets out the minimum requirements to ensure the provision of safe drinking water to the public.
Owners and operators must also follow the actions or requirements specified in the directive issued by the Halton Region Public Health.
Public health inspectors conduct assessments of SDWS to determine their level of risk, and issue a site-specific directive as outlined in the Ontario Public Health Standards Safe Drinking Water and Fluoride Monitoring Protocol and Small Drinking Water Systems Risk Assessment Guideline. The directive may include requirements for sampling and testing frequency, treatment and treatment equipment, operational checks, record maintenance, operator training and signage posting.
Public health inspectors also monitor SDWS to ensure the requirements outlined in the regulations and the site-specific directives are met, and that all adverse water quality incidents are investigated and appropriate corrective actions are taken to protect the public from unsafe water.
Notice of Operation
A SDWS owner/operator may not supply water to the public without first obtaining permission from Halton Region Public Health.
Specific information must be provided to the Medical Officer of Health (MOH) in a number of circumstances including, but not limited to, opening or re-opening a SDWS after a 60-day closure, or after the construction, installation, alteration or extension of the SDWS. To comply with this requirement, visit the Notification to Public Health of Business Opening, Reopening or Renovation page for more information.
Operator Training
SDWS operator training is provided by the Walkerton Clean Water Centre (external link) (WCWC). Please consult with your area public health inspector on the appropriate operator training for your system.
Adverse Water Quality Incidents and Reporting
Owners and operators of SDWS are required to report incidents of adverse water quality to Halton Region Public Health immediately by calling 311. An inspector is available to take these reports 24 hours a day, seven days a week.
In addition the owner/operator must:
SDWS Advisories in Halton Region
A boil water advisory or drinking water advisory may be issued by either the operator or Halton Region Public Health in response to an adverse test result, adverse observation or outbreak event associated with the water system. A listing of SDWS advisories in Halton region is included below. SDWS advisories are posted for eight years for high risk drinking water systems and for four years for medium or low risk small drinking water systems.
- Type of Premises: Place of Worship
- Risk Category: Moderate
- Name: Serbian Orthodox Diocese (Main Building)
- Address: 7470 McNiven Rd, Milton, ON L0P 1B0
- Type of Water Advisory: Boil Water Advisory
- Reason(s): Adverse water test result*
- Date Water Advisory Issued: September 22, 2023
- Corrective actions to be taken:
- Post warning notices
- Notify users to boil the water/seek alternative source
- Repair/service treatment equipment
- Flush, resample and test
- Date Water Advisory Lifted: October 10, 2023
- Corrective measures taken and outcome:
- Corrective actions completed
- Resampling results are satisfactory
*An adverse observation is an observed event (other than an adverse test result) that suggests that the system may not be providing water that is safe for the users to drink.
- Type of Premises: Recreational Facility
- Risk Category: Low
- Name: Campbellville New Ball Park
- Address: 2686 Reid Sideroad, Campbellville, ON L0P 1B0
- Type of Water Advisory: Boil Water Advisory
- Reason(s): Adverse observation
- Date Water Advisory Issued: September 20, 2023
- Corrective actions to be taken:
- Post warning notices
- Notify users to boil the water/seek alternative source
- Repair/service treatment equipment
- Flush, resample and test
- Date Water Advisory Lifted: September 29, 2023
- Corrective measures taken and outcome:
- Corrective actions taken
- Resampling results are satisfactory
- Type of Premises: Farm
- Risk Category: Low
- Name: Amma Canada
- Address: 9158 Trafalgar Rd., Georgetown, ON L7G 4S5
- Type of Water Advisory: Boil Water Advisory
- Reason(s): Adverse observation*
- Date Water Advisory Issued: September 6, 2023
- Corrective actions to be taken:
- Post warning notices
- Notify users to boil the water/seek alternative source
- Repair/service treatment equipment
- Disinfect the system
- Flush, resample and test
- Date Water Advisory Lifted: September 13, 2023
- Corrective measures taken and outcome:
- Corrective actions completed
- Resampling results are satisfactory
*An adverse observation is an observed event (other than an adverse test result) that suggests that the system may not be providing water that is safe for the users to drink.
- Type of Premises: Recreational Facility
- Risk Category: Low
- Name: Campbellville Old Diamond
- Address: 105 Campbell Ave. E., Campbellville, ON L0P 1B0
- Type of Water Advisory: Boil Water Advisory
- Reason(s): Adverse water test result
- Date Water Advisory Issued: August 24, 2023
- Corrective actions to be taken:
- Post warning notices
- Notify users to boil the water/seek alternative source
- Disinfect the system
- Flush, resample and test
- Date Water Advisory Lifted: September 6, 2023
- Corrective measures taken and outcome:
- Corrective actions taken
- Resampling results are satisfactory
- Type of Premises: Place of Worship
- Risk Category: Moderate
- Name: Serbian Orthodox Diocese (Picnic Area)
- Address: 7470 McNiven Road, Milton, ON L0P 1B0
- Type of Water Advisory: Boil Water Advisory
- Reason(s): Adverse observation*
- Date Water Advisory Issued: July 20, 2023
- Corrective actions to be taken:
- Post warning notices
- Notify users to boil the water/seek alternative source
- Repair/service treatment equipment
- Flush, resample and test
- Date Water Advisory Lifted: August 21, 2023
- Corrective measures taken and outcome:
- Corrective actions completed. UV light was repaired.
- Resampling results are satisfactory.
*An adverse observation is an observed event (other than an adverse test result) that suggests that the system may not be providing water that is safe for the users to drink.
- Type of Premises: Recreational Facility
- Risk Category: Low
- Name: Campbellville New Ball Park
- Address: 2686 Reid Sideroad, Campbellville, ON L0P 1B0
- Type of Water Advisory: Boil Water Advisory
- Reason(s): Adverse water test result
- Date Water Advisory Issued: June 20, 2023
- Corrective actions to be taken:
- Post warning notices
- Notify users to boil the water/seek alternative source
- Disinfect the system
- Flush, resample and test
- Date Water Advisory Lifted: August 23, 2023
- Corrective measures taken and outcome:
- Corrective actions taken
- Resampling results are satisfactory
- Type of Premises: Gas Station
- Risk Category: Low
- Name: Escarpment Esso
- Address: 6783 Guelph Line Burlington L9T 2X6
- Type of Water Advisory: Boil Water Advisory
- Reason(s): Adverse observation*
- Date Water Advisory Issued: June 28, 2023
- Corrective actions to be taken:
- Post warning notices
- Notify users to boil the water/seek alternative source
- Repair/service treatment equipment
- Disinfect the system
- Flush, resample and test
- Date Water Advisory Lifted: July 5, 2023
- Corrective measures taken and outcome:
- Corrective actions completed
- Resampling results are satisfactory
*An adverse observation is an observed event (other than an adverse test result) that suggests that the system may not be providing water that is safe for the users to drink.
- Type of Premises: Recreational Facility
- Risk Category: Low
- Name: Campbellville Old Diamond
- Address: 105 Campbell Ave. E., Campbellville, ON L0P 1B0
- Type of Water Advisory: Boil Water Advisory
- Reason(s): Adverse water test result
- Date Water Advisory Issued: July 20, 2023
- Corrective actions to be taken:
- Post warning notices
- Notify users to boil the water/seek alternative source
- Disinfect the system
- Flush, resample and test
- Date Water Advisory Lifted: August 16, 2023
- Corrective measures taken and outcome:
- Corrective actions taken
- Resampling results are satisfactory
- Type of Premises: Place of Worship
- Risk Category: Low
- Name: Knox Presbyterian Church Sixteen
- Address: 1150 Dundas Street West, Oakville, L6H 7C9
- Type of Water Advisory: Boil Water Advisory
- Reason(s): Adverse observation*
- Date Water Advisory Issued: April 27, 2023
- Corrective actions to be taken:
- Post warning notices
- Notify users to boil the water/seek alternative source
- Repair/service treatment equipment
- Disinfect the system
- Flush, resample and test
- Date Water Advisory Lifted: May 9, 2023
- Corrective measures taken and outcome:
- Corrective actions completed
- Resampling results are satisfactory
*An adverse observation is an observed event (other than an adverse test result) that suggests that the system may not be providing water that is safe for the users to drink.
Additional Resources
Safe Drinking Water Act, 2002 (external link)
Clean Water Act, 2006 (external link)
Ontario Regulation 169/03: Ontario Drinking Water Quality Standards (external link)
Licensed Laboratories (external link)
Well Record Request form (external link)
Email accesshalton@halton.ca or call 311 to contact Halton Region Public Health if you have questions or are unsure if your system is a SDWS.