Maricopa County · Phoenix–Mesa–Chandler metro
Plumbing help in Scottsdale, AZ
Very Hard WaterNewer Homes
Scottsdale's water gets harder the farther south you live: 16 to 18 grains per gallon in the north and up to 25 in the south. About two-thirds of it comes from the Colorado River via CAP. Luxury homes, pools and big irrigated lots add to the usual desert scale issues.
- Median home built
- 1991
- Built before 1980
- 27%
- Owner-occupied
- 65%
- Water hardness
- Very hard
- ≈ 23.5 grains/gal
- Winter
- Hard freezes are rare
- Plumbing code
- State code
Common repairs in Scottsdale homes
- Water Softener Installation
Water of 16 to 25 grains per gallon makes softening nearly standard.
- Tankless Water Heaters
Many larger homes use tankless units, which need frequent descaling here.
- Leak Detection
Large irrigated lots and pool plumbing hide leaks underground.
Scottsdale's very hard water and your plumbing
Scottsdale's hardness varies by area: about 22 to 25 grains per gallon south of Indian School Road, 20 to 22 between Indian School and Chaparral roads, and 16 to 18 north of Chaparral. About two-thirds of the supply comes from the Colorado River via the Central Arizona Project. [1]
Emergency plumbing in Scottsdale
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 Scottsdale homes, based on local conditions.
Which plumbing rules apply in Scottsdale
Plumbing contractors in Scottsdale must be licensed by the Arizona Registrar of Contractors. [2]
Polybutylene-era homes in Scottsdale
The median home in Scottsdale was built in 1991, and 27% of homes predate 1980. Homes from that era were typically built with copper or CPVC supply, plastic drains, and in some homes gray polybutylene supply pipe.
- Galvanized steel supply (1900–1960)
- Copper supply (1950–2000)
- Polybutylene (some homes) (1978–1996)
- PEX / CPVC (1995–today)
Plumbing services for Scottsdale homes
Scottsdale plumbing questions
How hard is Scottsdale water?
Very hard, and it depends on where you live: about 22 to 25 grains per gallon south of Indian School Road and 16 to 18 north of Chaparral Road.
Where does Scottsdale's water come from?
About two-thirds from the Colorado River via CAP, plus Salt River Project water and summer groundwater.
How often should I descale a tankless heater in Scottsdale?
At least every 6 to 12 months with water this hard, or more often if flow drops or error codes appear.
How do I find an irrigation or pool leak in Scottsdale?
Turn off all water use and check the meter. If it moves, look for soggy ground or unusual green patches, and consider professional leak detection.
How do I check a Scottsdale plumbing contractor?
Search the Arizona Registrar of Contractors by license number or business name.
Sources (3)
- U.S. Census Bureau, ACS 2024 1-year (B25035) · checked 2026-10-01
- City of Scottsdale, Hard Water Fact Sheet · checked 2026-10-01
- Arizona Registrar of Contractors · checked 2026-10-01