Water Quality

The Municipality of Greenstone is committed to providing clean and safe drinking water to our serviced communities and has engaged the services of Ontario Clean Water Agency (OCWA) to act as the licensed operator of our water treatment facilities, providing 24/7 monitoring of our water quality.

Restoring water service

Has your building been closed or on low occupancy over the last few months? View the Canadian Water and Wastewater Association's fact sheet for building owners and operators to safely reopen your building's water services. The water in your building could be stagnant and can pose serious health risks if service is not restored properly. 

Report a water quality concern

Changes in tap water may occur for a variety of reasons and in some cases it can be resolved by running your water until the water is clear (approximately 15 minutes). If you have an issue with your tap water such as discolouration, odour, low water pressure, or any other water quality issue arises, you can report your concerns by filling out our water quality complaint form. We will have a representative of OCWA contact you. Water quality concerns are recorded so we can review the performance of our water treatment systems.

Private wells and septic systems

In Northern Ontario, municipalities are not the regulating authority for wells and septic systems. Contact the Thunder Bay District Health Unit (TDBHU) for information on water quality testing for private wells, information on private septic systems, or to make an appointment with an inspector. We encourage you to view the septic tank FAQ's offered by the health unit.

Before you install a private well or septic system in the Municipality of Greenstone, please familiarize yourself with our building permit guidelines and zoning regulations.

The Municipality of Greenstone has introduced By-law 21-04 prohibiting the use of private wells in Beardmore. Review the bylaw for details on restrictions or contact us for more information.

Drinking water advisories

For any boil water or swimming advisories, view our news feed or visit the Thunder Bay District Health Unit (TBDHU).

For information on Sodium Advisories, please consult with a local health nurse through the TBDHU. Reference:  Beardmore, Nakina

Boil water advisories

Notice of any drinking water advisory will be issued by the Municipality of Greenstone or OCWA. We will advertise community-wide boil advisory notices on the radio (CFNO 100.7 FM), on our website and on Facebook. If only a few properties are affected, Public Works or OCWA staff will put a notice on the main door to your house. We will provide a second notice when the boil water advisory is lifted. Visit the TBDHU to learn more about boil water advisories in the region. How to get safe drinking water during an advisory Visit the Centres for Disease Control and Prevention to learn more about safe practices when a boil water advisory is in effect.

Wastewater overflows and by-pass events

If there is a wastewater overflow or by-pass event, we will provide a notice alert on our news feed and on Facebook.

For concerns about fish consumption, please refer to the Eating Ontario Fish guide and interactive map to identify types and amounts of fish that are safe to eat from fishing locations.

Swimming advisories

Bypassing may trigger a swimming advisory, so be sure to subscribe to this page or check out TBDHU for updates. A swimming advisory is a precautionary notice that informs the public about specific risks to health and safety. If a swimming advisory is in effect, the Municipality will post signs at the following beaches under the direction of the Thunder Bay District Health Unit: Geraldton Waterfront (Municipal Administration Office) Jeff Gauthier Park (Longlac) Visit the TBDHU for information and safety precautions for swimming advisories at district beaches and swimmers itch.

How these events occur

Our wastewater treatment facilities and distribution systems may experience bypassing because of high rainfall events that overwhelm the capacity of the infrastructure. All bypasses are promptly reported to the Ministry of Environment, Conservation and Parks (MECP) Spills Action Centre and to Public Health Services as required.

Watermain and hydrant flushing

Notice of flushing

Water quality management

You may see OCWA staff in our communities performing water sampling for testing during regular maintenance activities such as watermain flushing activities and water break repairs to ensure water quality standards are met. OCWA administrators also work with the Municipality to fulfill provincial reporting responsibilities. Once a year, each water treatment facility is inspected by the Ontario Ministry of Environment, Conservation and Parks.

Financial Plan

View our Water and Wastewater Financial Plan that demonstrates the financial sustainability of the Municipality's drinking water and wastewater systems.

Source Water Quality and Protection

The sources of water for drinking water treatment facilities in Greenstone are also monitored by OCWA. Throughout the province, some areas are specifically identified as vulnerable. For these areas, Source Water Protection Plans are in place. In Greenstone, the community of Nakina requires a Source Water Protection Plan. Please contact us to request a copy of the Source Water Protection Plan.

Annual Drinking Water and Sewer Reports

Under the Safe Drinking Water Act, our Municipality is responsible for ensuring that annual drinking water quality reports for each of our drinking water systems are prepared and made available to the public. The report must include: A brief description of the drinking water system A list of water treatment chemicals used A summary of the test results covered under the reporting period A summary of adverse test results and other issues, including corrective actions taken A description of major expenses incurred to install, repair, or replace equipment   View the Drinking Water Report Summary and the 2024 Annual Drinking Water Reports The 2025 Drinking Water Quality Management System (DWQMS) Operational Plan is available at Municipal Ward Offices in print or digital format.    View the Performance Reports for the Geraldton and Nakina Sewage Treatment Facilities: Geraldton 2024 Wastewater Report, Nakina 2024 Wastewater Report   View the 2023-2024 Sanitary Collection System Annual Performance Report View the 2023-2024 Storm Collection System Annual Performance Report   Please contact us to review the reports for previous years.