The short answer
How Lightning Affects Plumbing
Lightning carries a massive electrical charge. When it strikes your home or nearby ground, that charge can travel along conductive paths, including metal water pipes. The surge can heat the water inside pipes, causing pressure spikes that lead to cracks or burst joints. It can also damage rubber gaskets and seals.
Even if the strike is not direct, a nearby hit can send a surge through the ground and into your plumbing. Homes with copper or galvanized steel pipes are more vulnerable than those with plastic piping. The damage may not be immediately visible, so a careful inspection is wise after a storm.
- Check for water stains on walls or ceilings near pipe runs.
- Listen for hissing or dripping sounds behind walls.
- Inspect your water heater for error codes or leaks.
- Look for cracks in exposed pipes in basements or crawl spaces.
- Test your well pump or sump pump for unusual noises.
- Check your water pressure for sudden drops.
What to Do Right After a Strike
If you know a lightning strike hit your property, act quickly. Turn off the main water supply to stop potential flooding from damaged pipes. Also unplug appliances connected to water lines, such as washing machines and dishwashers, to protect them from power surges. If you smell gas or see sparks, leave the house and call emergency services.
Document any visible damage with photos and notes. This helps if you file a claim with your insurance company. Policies vary, and your insurer decides what is covered. Do not attempt to repair electrical or plumbing issues yourself; instead, call a plumber or electrician for a thorough check.
Signs Your Plumbing Was Damaged
Some damage is obvious, like a burst pipe or a flooded basement. Other signs are subtler. You might notice a drop in water pressure, discolored water, or a strange metallic taste. Water heaters and well pumps often have circuit boards that can be fried by a surge, leading to failure or error messages.
Also check for leaks around water meters, shutoff valves, and hose bibs. A slow leak can worsen over time, causing mold and structural issues. If you see any of these signs, shut off the water and call a professional to assess the system.
Preventing Future Lightning Damage
You can reduce the risk of lightning damage to your plumbing with a few steps. A whole-house surge protector can shield electronic components in water heaters and pumps. Have an electrician check your plumbing grounding to help direct surges safely into the earth. These measures are not foolproof, but they add a layer of protection.
If you live in Redmond, keep your main shutoff valve location written down so you can act fast in an emergency. Also consider installing a pressure relief valve to reduce stress on pipes during surges. Regular maintenance of your plumbing system helps catch small issues before they become big ones.
When to Call the Pros
After a lightning strike, you may need professional help to assess and repair damage. A plumber can inspect pipes, joints, and fixtures for hidden cracks. An electrician can check grounding and surge protection. If water has already caused damage to your home, local water damage pros can help with drying and restoration.
They use specialized equipment to detect moisture in walls and under floors, and they can address mold growth that may follow. For plumbing overflow cleanup, you might need pros who handle both water extraction and structural drying. Contact the pros if you see any signs of water damage.
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Call Now (425) 407-5186Frequently asked questions
Can a lightning strike damage plastic pipes?
Plastic pipes are less conductive than metal, so they are less likely to carry a surge. However, the heat from a nearby strike can still cause them to soften or warp. Check for visible deformation or leaks after a storm.
Will my home insurance cover lightning damage to plumbing?
Coverage depends on your policy. Many standard policies include lightning damage, but some exclude certain types of water damage. Check your policy documents or call your insurer to confirm what is covered. Policies vary, and your insurer decides what is covered.
How long does it take to notice plumbing damage after a strike?
Some damage, like a burst pipe, is immediate. Other issues, such as a slow leak or a failing pump, may take days or weeks to become obvious. Inspect your plumbing within a few days after a storm and watch for changes in water pressure or quality.