Pierce County · Seattle–Tacoma–Bellevue metro
Plumbing help in Tacoma, WA
Older PipesFreeze Risk
Tacoma drinks soft Green River water, so scale isn't its problem. About two-thirds of homes predate 1980, and a wet climate with big trees makes root-damaged sewer lines and damp crawl spaces common.
- Median home built
- 1968
- Built before 1980
- 65%
- Owner-occupied
- 55%
- Water hardness
- Soft
- ≈ 1.5 grains/gal
- Winter
- Occasional hard freezes
- Plumbing code
- UPC
The plumbing calls that come up most in Tacoma
- Sewer Line Repair
Tree roots get into older clay side sewers.
- Sump Pump Repair and Installation
Long wet seasons keep crawl spaces and basements damp.
- Repiping
Older homes often have aging galvanized lines.
Emergency plumbing in Tacoma
Call (833) 878-1592Shut off your main water supply if it's safe to do so. The emergencies below are listed most likely first for Tacoma homes, based on local conditions.
What's behind the walls of Tacoma's older homes
The median home in Tacoma was built in 1968, and 65% of homes predate 1980. Homes from that era were typically built with copper or galvanized supply, cast iron drains, clay or cast iron sewer laterals.
- Galvanized steel supply (1900–1960)
- Copper supply (1950–2000)
- Polybutylene (some homes) (1978–1996)
- PEX / CPVC (1995–today)
Plumbing code and permits in Tacoma
Plumbing here follows Washington's statewide Uniform Plumbing Code (2021 edition, chapter 51-56 WAC), and plumbers must be certified by the Department of Labor and Industries. [2]
When Tacoma gets a hard freeze
Occasional hard freezes · 65% of Tacoma homes were built before 1980
Tacoma's soft water
Tacoma Water's Green River supply is soft, at about 1 to 2 grains per gallon of hardness. [1]
Plumbing services for Tacoma homes
Tacoma plumbing questions
Is Tacoma water hard?
No. Green River water is soft, about 1 to 2 grains per gallon.
Why do Tacoma sewer lines get roots?
Many older homes have clay side sewers, and roots from large trees enter at the joints.
How do I keep my Tacoma crawl space dry?
A vapor barrier, good grading and gutters, and a sump pump where water collects all help.
Do Tacoma pipes freeze?
Less often than inland, but cold snaps do freeze pipes in crawl spaces, garages and exterior walls, especially in older homes with little insulation. Disconnect hoses and insulate exposed lines before winter.
Who can do plumbing work in Tacoma?
Plumbers certified by Washington L&I, working for a licensed plumbing contractor.
Sources (3)
- U.S. Census Bureau, ACS 2024 1-year (B25035) · checked 2026-10-01
- Tacoma Public Utilities, Water Quality Report · checked 2026-10-01
- Washington State Department of Labor and Industries, Plumber Certification · checked 2026-10-01