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  • Location


  • Know where your well is located.

  • Extend the casing (or well head) above grade, if buried or too low to the ground to a minimum of 40 cm (16”) above ground level.

  • Ensure your well is provided with a sanitary seal or cover that is in good condition and fitted properly.

  • Mound up the ground around the outside of the well or well pit with clean earth.

  • Keep all potential contamination sources away from the well (e.g., septic systems, land fills, fuel storage, refueling station, chemical storage).

  • Prevent the use and storage of fertilizer, salt, or gasoline in the vicinity of the well.

  • Maintain a permanent grassed buffer at least 3 m (10 ft.) around your well.

  • Watch for changes in the taste, odour and colour of the water.

  • Sample for other chemicals if you have concerns (e.g. fuel spills).

  • Disinfect the well with plain bleach (5.25% sodium hypochlorite) after doing any work on the inside of the well or after maintaining pumping equipment.

  • When a well is no longer in use, plug and seal it properly in accordance with the Ministry of the Enviroment’s Wells Regulation, O.Reg. 903.

  • If you have lightning rod protection, do not ground the system to your drilled well casing. Use a separate grounding rod.

Every 3 to 4 months or at least 3 times per year

  • Have a sample tested for bacteria.

At least once a year

  • Test for sodium and nitrate-nitrogen to verify contaminant source from septic system.

  • Inspect the cover or sanitary seal for cracks and holes.

  • Check the condition of well vents to ensure they are unobstructed and the vent is screened to prevent the entry of vermin into the well.

  • Examine around the well.

  • Check for settling of the ground around the outside of the well casing.

  • Check for ponding of water.

  • Check for potential sources of contamination.

  • Remove animal waste and leaves from collecting in the area around the well.

  • Inspect the inside of the well by removing cover (for dug or bored wells). Early spring just after the snow has melted is a good time. WARNING: DO NOT ENTER THE WELL OR WELL PIT AT ANYTIME DURING AN INSPECTION.

  • Check seal around plumbing inlets into the well casing (dug, bored well or well pit).

  • Replace seal if water is seeping in from outside the well.

  • Check for seepage through cracks or stains on the inside of the casing.

  • Check for signs of surface water seeping or running freely into the well.

  • Ensure all cracks or joints in the well casing are properly sealed.

  • Remove any debris floating in the well if within reach. Only licensed well borers should enter a well.

  • Ensure the cover or seal is securely in place and watertight.

  • Prevent further debris from entering the well.

  • Compare your well construction to the diagrams that show proper techniques.

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