Pima County · Tucson metro
Plumbing help in Tucson, AZ
Older PipesFrozen Pipes
Tucson is older than Phoenix on average: about half its homes predate 1980. Its water mixes naturally hard local groundwater with Colorado River water from the Central Arizona Project. Scale, aging pipe and slab-foundation leaks are the common threads in its plumbing calls.
- Median home built
- 1979
- Built before 1980
- 52%
- Owner-occupied
- 52%
- Water hardness
- See below
- Winter
- Hard freezes are rare
- Plumbing code
- Local
The plumbing calls that come up most in Tucson
- Water Heater Repair
Hard water builds sediment and scale in tank heaters, leading to rumbling, lost capacity and leaks.
- Water Softener Installation
Many households soften to reduce scale on fixtures and appliances.
- Repiping
Homes built before 1980 often have aging galvanized or early copper supply lines.
Emergency plumbing in Tucson
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 Tucson homes, based on local conditions.
Tucson's 1970s housing and its pipes
The median home in Tucson was built in 1979, and 52% of homes predate 1980. Homes from that era were typically built with copper supply, early plastic (ABS or PVC) drains, some cast iron.
- Galvanized steel supply (1900–1960)
- Copper supply (1950–2000)
- Polybutylene (some homes) (1978–1996)
- PEX / CPVC (1995–today)
Where Tucson's water comes from
Tucson Water says the area's groundwater is naturally hard, and that hardness increases mainly from mixing local groundwater with Central Arizona Project (Colorado River) water. [1]
Plumbing services for Tucson homes
Tucson plumbing questions
Why is Tucson water hard?
Tucson Water says local groundwater is naturally hard, and mixing it with Colorado River water delivered by the Central Arizona Project raises hardness further.
Are slab leaks common in Tucson?
Most Tucson homes sit on slab foundations with supply lines underneath, so a leak can go unnoticed until the water bill jumps or a floor feels warm. The meter test on our leak detection page is a quick first check.
Should Tucson homes with older pipes be repiped?
About half of Tucson homes predate 1980. If yours has galvanized supply lines with rusty water, falling pressure or repeated leaks, repiping usually costs less over time than chasing leaks one at a time.
How often should I flush my water heater in Tucson?
At least once a year with hard water, and descale tankless units on the manufacturer's schedule. See water heater maintenance.
Sources (2)
- U.S. Census Bureau, ACS 2024 1-year (B25035) · checked 2026-10-01
- City of Tucson, Tucson Water: Hard Water · checked 2026-10-01