What it means
Copper pipe comes in rigid Type L and Type M wall thicknesses for water supply, joined with solder, press fittings, or ProPress connectors. It resists UV and high temperature better than many plastics when exposed.
Pinhole leaks can develop in aggressive water or where pipes touch dissimilar metals. Repiping projects often replace aging copper with PEX while reusing copper where it remains sound.
Why it matters in Santa Cruz County
Mid-century homes from Seabright to Soquel frequently have copper supply lines in slabs and crawl spaces. Coastal salt air can accelerate corrosion on exterior hose bibs and pool lines in Aptos and La Selva Beach.
Homeowner tip
Watch for green staining on pipes or small damp spots on ceilings below bathrooms as early pinhole leak signs.
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Related glossary terms
Also explore the Septic Glossary or call 831.225.4344 with questions about your property.