By PlumberDallas.com editorialUpdated
Typical original materials
Copper supply lines became standard in much 1960s construction, with cast-iron drain piping under slabs still common. Clay or cast-iron sewer laterals connect to the City system.
Commonly found: copper supply, cast-iron drains, clay or cast-iron sewer laterals. "Typical" is not a guarantee; confirm what is in your house.
How it is aging
Copper lines under slabs can develop pinhole or abrasion leaks; cast-iron drains may scale or crack.
What to check
- Exposed supply pipe at the water heater and under sinks (magnet sticks to galvanized; copper is reddish; polybutylene is gray plastic)
- Water pressure at several fixtures
- Sewer camera inspection for the drain and lateral
- Age and venting of the water heater
Next steps
When should old plumbing be replaced? · identify galvanized pipe
Cost information
Published ranges with sources: Repiping Cost. These are not quotes.
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