Sewer backing up into the lowest fixture
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Category three water. Do not clean it yourself without protection and do not run the HVAC while it is present.
This is most common in homes built before about 1940. Pre-war construction — galvanized supply, cast iron drains, cloth-wrapped wiring, ungrounded circuits.
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Related
- Water under an old house after heavy rain
- Cast iron drain leaking below the floor
- Original galvanised supply burst
- Plaster holding water without showing it
- Damage from a burst pipe in a freeze
- Wet insulation under the floor
- Historic staining nobody has explained
- No shutoff valves at individual fixtures
Back to Water Damage.
Written by Jaylan Jones. I Like To Fix earns a referral fee when a call connects to a contractor. See our business-model disclosure.