Why have your artesian well disinfected at least once a year?

When you own a building supplied by an artesian well, water quality becomes a critical issue — both for the health of the occupants and for the protection of the property itself. Even though an artesian well is generally considered a reliable and protected water source, it is never completely immune to contaminants. This is why experts recommend preventive disinfection at least once a year.

In this article, discover why this simple maintenance step should be part of your annual routine.

1. An essential preventive measure for health

Over time, various microorganisms can accumulate in a well:

• bacteria (such as E. coli and coliforms),
• viruses,
• algae or biofilms,
• contaminants from the surrounding soil.

These intrusions can be caused by seasonal variations, surface water infiltration, heavy rainfall, rapid snowmelt, or even insufficient maintenance of the installations around the well.

Annual disinfection helps eliminate these organisms before they become a health risk for the occupants.

2. Cleaner… and more consistent water

Even if the water appears clear, odorless, and tastes normal, it is not automatically free of contaminants. Preventive disinfection ensures:

• better water quality year-round,
• reduced risk of sudden contamination,
• a safer environment for families or tenants.

It’s a simple action that prevents many unpleasant surprises.

3. Protecting your building’s value and reputation

For a property owner — whether it’s a rental building, a vacation chalet, or a multi-unit residence — water quality directly affects:

• tenant satisfaction,
• occupant safety,
• compliance with municipal or provincial standards,
• the property’s resale value.

Regular disinfection also reduces the risk of water problems leading to costly repairs or service interruptions for tenants.

4. When should you disinfect?

While once a year is the minimum recommended, certain moments are particularly ideal:

• in the spring, after the snow melts;
• after heavy rains or local flooding;
• when a water test shows the presence of coliforms or bacteria;
• after work on the well, pump, or plumbing;
• when tenants change, to ensure a safe environment.

5. A simple and inexpensive procedure

Well disinfection is typically done with a chlorinated solution introduced directly into the well. It can be performed by a professional or by the property owner, provided technical recommendations are followed. After disinfection, a water test is strongly recommended to confirm potability. The cost is modest compared to the risks and consequences of undetected contamination.

Summary

Disinfecting your artesian well at least once a year means:

✔ protecting the health of occupants

✔ maintaining high-quality drinking water

✔ preventing contamination and costly problems

✔ preserving and enhancing your property’s value

It’s a simple, cost-effective, and essential maintenance step for every responsible property owner.