Well Casing Inspection: What It Is, Why It Matters, and When to Inspect
July 5, 2026 · 5 min read · By Deep Dive Plumbing Maryland
Most well owners think about the pump, the pressure tank, and the water quality — but rarely about the casing. Yet the well casing is the first line of defense against contamination. A damaged casing can allow surface water, bacteria, and chemicals to enter your water supply.
When to Have Your Well Casing Inspected
Frequently Asked Questions
What is a well casing and why does it matter?
The well casing is the pipe that lines the borehole of your well, from the surface down to the water-bearing zone. It serves two critical functions: it keeps the borehole open so the pump can draw water, and it prevents surface water, soil, and contaminants from entering the well. A damaged or corroded casing is one of the most common causes of well water contamination.
How do I know if my well casing is damaged?
Signs of a damaged well casing include: recurring bacterial contamination that returns after shock chlorination, sudden changes in water quality after rain events, sediment or turbidity in the water, and visible damage or corrosion at the wellhead. A well camera inspection is the definitive way to assess the condition of the casing below ground.
How long does a well casing last?
Steel well casings typically last 25–50 years before corrosion becomes a concern. PVC casings can last 50+ years. The lifespan depends on the soil chemistry, water chemistry, and installation quality. Wells in acidic soil or with acidic water may experience faster casing corrosion. Maryland's coastal soils can be corrosive to steel casings.
How much does well casing repair cost in Maryland?
Well casing repair costs in Maryland vary widely depending on the type and extent of the damage. A new well cap (the most common repair) costs contact us for a free estimate. Casing liner installation (for a damaged section) costs contact us for a free estimate. In severe cases, a new well may be more cost-effective than extensive casing repair. A well inspection is the first step to determine the right approach.
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