Homeowner Well Inspection Checklist

What a homeowner well inspection cover?

Your well is the point where your household water supply meets the ground, and a private residential well needs routine attention to keep it safe. A homeowner well inspection evaluates the safety and structural integrity of the well itself and the area immediately around it. The work combines a visual check of the wellhead and casing with regular water testing, so you can detect cracks, stains, seepage, and other signs of deterioration before they compromise water quality. A thorough inspection looks at several things at once: - **The wellhead and casing.** Confirm the well's precise location on the property, that the casing extends at least 40 cm (16 inches) above ground level, and that the sanitary seal or cover is in good condition and securely fitted. - **Surface drainage.** Check that the ground around the exterior of the well has been mounded with clean earth to direct surface runoff away, and that there is no water ponding or pooling near the well. - **The buffer around the well.** Make sure a permanent grassed buffer of at least 3 m (10 ft.) is maintained, and that animal waste, accumulated leaves, and other debris have been removed. - **Contamination sources nearby.** Identify whether septic systems, landfills, fuel storage, refuelling stations, chemical storage, or other sources are located near the well, and whether fertilizer, salt, pesticides, or gasoline are stored or used in the vicinity. - **Water quality.** Confirm that a water sample has been submitted for bacterial analysis, and record sodium and nitrate-nitrogen results in mg/L. - **Decommissioned wells.** Note the status of any unused or decommissioned wells on the property, including whether they are plugged and sealed per local Wells Regulation or need action. Catching problems early is the point. Changes in the taste, odour, or colour of the water, or signs of seepage into the casing, tell you that something has changed below the surface and that further sampling or repair may be needed.

Why well inspections matter

A well that looks fine from the surface can still be letting surface water, debris, or contamination into your supply. Ground settling or subsidence around the outside of the casing, cracks and joints that are not properly sealed, or a sanitary seal that has cracked or worn can all open a path for infiltration. Once surface water is seeping or running freely into the well, water quality is at risk. Regular inspection also protects the well's long-term performance. Keeping the perimeter clean, well-drained, and buffered gives contamination fewer opportunities to reach the water source. Quarterly bacterial and chemical testing confirms that the water is potable, while the annual assessment gives you a fuller picture of the well's condition — from the vents to the interior casing. Some risks are easier to overlook than others. If lightning rod protection is installed on the property, it should be grounded to a separate grounding rod rather than the drilled well casing. After any interior work or pumping equipment maintenance, the well should be disinfected with plain bleach (5.25% sodium hypochlorite). Unused or decommissioned wells left unplugged are another exposure point, which is why confirming their status per local Wells Regulation belongs in the routine.

What a good well inspection covers

A complete inspection moves from the outside in. Start at the wellhead: its location, the height of the casing above ground, the condition of the sanitary seal or cover, and whether the ground has been mounded with clean earth to direct surface runoff away. Confirm the grassed buffer is in place and that animal waste, leaves, and debris have been cleared. Then look for what could reach the well. Note any potential contamination sources nearby — septic systems, landfills, fuel storage, refuelling stations, chemical storage, or anything else — and whether fertilizer, salt, pesticides, or gasoline are stored or used in the vicinity. Watch for recent changes in the taste, odour, or colour of the water and describe any specific chemical concerns or nearby incidents, such as fuel spills, that may warrant additional water sampling. Water testing runs alongside the visual check. Each round should confirm that a sample has been collected and submitted for bacterial analysis, capture the date of the most recent submission and the bacterial test result, and record sodium and nitrate-nitrogen concentration in mg/L. Finally, the annual assessment examines the well's condition in detail. Check the cover or sanitary seal for cracks, holes, and wear; confirm vents are unobstructed, properly screened, and preventing vermin entry; and rate the cleanliness of the surrounding area. Look for ground settling or subsidence around the casing, water ponding, and any new contamination sources. For dug or bored wells, inspect the interior from above and record your observations. Do not enter the well or well pit. Check that the seal around plumbing inlets into the casing is intact and watertight, and replace it if you see water seepage from outside the well. Look for cracks, stains, or moisture seepage on the interior casing, confirm surface water is not seeping or running in, and verify that all cracks and joints are properly sealed. Remove floating debris within safe reach — only licensed well contractors should enter a well — and confirm the cover or seal is securely in place and completely watertight, with protective measures against future debris, insects, or animals. Compare the overall construction against standard diagrams depicting proper installation techniques.

How to carry out the inspection

Work through the checklist in a fixed order so nothing is skipped, and record what you find rather than relying on memory. 1. **Set the context.** Record the date the inspection was conducted, who prepared it, and the well's location on the property. 2. **Inspect the wellhead and perimeter.** Confirm the casing height, the condition and fit of the sanitary seal or cover, the ground mounding, and the grassed buffer. Check for ground settling, water ponding, and new contamination sources, and clear away animal waste, leaves, and debris. 3. **Identify contamination sources.** Note any that apply and flag anything that needs additional sampling. 4. **Review maintenance history.** Confirm disinfection with plain bleach after interior work or pump maintenance, the status of any decommissioned wells, and the grounding of any lightning rod protection. 5. **Test the water.** Collect and submit a sample for bacterial analysis on the quarterly cycle — every 3–4 months — and record the bacterial, sodium, and nitrate-nitrogen results. 6. **Inspect the interior.** For dug or bored wells only, inspect from above and record detailed observations. Never enter the well or well pit. Check inlet seals, the casing for cracks, stains, or seepage, and the sealing of cracks and joints. Remove floating debris within safe reach only. 7. **Confirm protection and close out.** Verify the cover or seal is watertight, protective measures are in place, and the construction matches standard installation diagrams. Record the signature and the inspection start and end dates. > If you are unsure whether a well is safe, or the work requires entry into the well or well pit, engage a licensed well contractor rather than attempting it yourself.

Frequently Asked Questions

This checklist is intended for homeowners with a private residential well. It covers confirming the well's location on the property, checking the casing, sanitary seal or cover, ground mounding and buffer area, and potential nearby contamination sources. It also covers quarterly testing for bacterial and chemical parameters such as sodium and nitrate-nitrogen, and an annual assessment of the well's condition, including the interior of dug or bored wells inspected from above. Maintenance steps such as disinfecting the well with plain bleach after interior work or pump maintenance are also included.

You check the well casing, confirming it extends at least 40 cm (16 inches) above ground level and that the sanitary seal or cover is in good condition, securely fitted, and free of cracks, holes, and signs of wear. You inspect the vents to make sure they are unobstructed, properly screened, and preventing vermin entry, and you check the ground around the well for settling, ponding, or seepage into the well. You also confirm that the ground around the exterior has been mounded with clean earth to direct surface runoff away, and that the plumbing inlet seals are intact and watertight, with no visible seepage from outside.

Check for potential contamination sources near the well, such as septic systems, landfills, fuel storage, refuelling stations, chemical storage, or other sources you identify. Also look at whether fertilizer, salt, pesticides, or gasoline are stored or used in the vicinity, confirm that a permanent grassed buffer of at least 3 m (10 ft.) is maintained around the well, and keep the perimeter clean and well-drained by removing animal waste, accumulated leaves, and other debris. If you observe recent changes in the taste, odour, or colour of the water, or specific chemical concerns or nearby incidents such as fuel spills, describe them so additional water sampling can be considered.

This checklist sets out quarterly testing every 3–4 months. For each round, collect and submit a water sample for bacterial analysis, record the date of the most recent submission and the result of the bacterial test, and record sodium and nitrate-nitrogen concentration results in mg/L. You also confirm whether the well has been disinfected with plain bleach (5.25% sodium hypochlorite) after any interior work or pumping equipment maintenance, and record the status of any unused or decommissioned wells on the property, including whether they are plugged and sealed per local Wells Regulation or need action.

The annual inspection and assessment covers the overall condition of the well. Check the well cover or sanitary seal for cracks, holes, and signs of wear, confirm vents are unobstructed and screened, rate the cleanliness of the area around the well, and look for ground settling or subsidence around the casing, water ponding, and new contamination sources. Remove debris from around the well, and record observations from the interior inspection for dug or bored wells only, inspecting from above. Then confirm the plumbing inlet seals, check for cracks, stains, or moisture seepage on the interior casing, verify that all cracks and joints are properly sealed, remove any floating debris within safe reach, confirm the cover or seal is securely in place and watertight, and check that protective measures prevent future debris, insects, or animals from entering. Finally, confirm the well construction conforms to standard diagrams depicting proper installation techniques.

Yes. For dug or bored wells, the checklist states you should record detailed observations from the interior well inspection while inspecting from above, and it explicitly warns: do not enter the well or well pit. Removal of floating debris is limited to what is within safe reach, and only licensed well contractors should enter a well.

Written by

Arne Reis

Founder

Process optimizer with 25 years of expertise, focused on operational excellence in quality, maintenance, EHS, and commissioning. Emphasizes innovative solutions and top-quality standards.

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