Galvanized, Copper, PEX and HDPE Service Lines Compared
The material of your service line affects how it fails and how it is repaired.
Galvanized steel
Common in older homes. It corrodes from the inside, which reduces flow and eventually causes leaks.
Copper
Durable, but acidic soil or water and poor joints can cause pinholes.
HDPE (polyethylene)
Flexible, corrosion-proof and common for replacements, especially trenchless.
PEX
Used inside homes and in some service installations. Fittings are the weak point.
Ready to replace? See repair and replacement and trenchless options.
Think you have a leak? Call (425) 000-0000 or request service online. Tell us the address and what you are seeing.
Helpful guides
How to Tell If You Have a Water Service Line LeakA step-by-step meter test and the signs of a buried water line leak for Lynnwood homeowners.Who Is Responsible for the Water Service Line?How responsibility for the water service line typically splits between the utility and the homeowner in Washington.Water Leak Detection Cost in LynnwoodWhat affects the cost of water leak detection and service line repair in Lynnwood, WA, and how to compare quotes.How to Read Your Water Meter for LeaksFind your meter, read the low-flow indicator and do a 15-minute leak test.Water Leak Detection Methods ExplainedHow acoustic, correlator, thermal, tracer gas and pressure testing methods find leaks.Galvanized, Copper, PEX and HDPE Service Lines ComparedThe common water service line materials and how they fail.