Sonoma County · Santa Rosa metro
Plumbing Services in Santa Rosa, CA
Newer HomesFrozen Pipes
Santa Rosa gets most of its water from the Russian River through Sonoma Water, which pumps it from wells deep below the riverbed. Wine-country homes range from early 1900s bungalows to subdivisions rebuilt after the 2017 Tubbs Fire, so plumbing needs vary widely from street to street.
Santa Rosa plumbing at a glance
The most common plumbing calls in Santa Rosa, CA are sewer line repair, water heater replacement and repiping. The median home was built in 1981, and 48% of homes predate 1980.
- Median home built
- 1981
- Built before 1980
- 48%
- Owner-occupied
- 58%
- Water hardness
- See below
- Winter
- Hard freezes are rare
- Plumbing code
- Local
Common repairs in Santa Rosa homes
- Sewer Line Repair
Older clay laterals near downtown crack and fill with roots.
- Water Heater Replacement
California requires seismic strapping and correct venting on every replacement.
- Repiping
Early 1900s and mid-century homes still have galvanized supply lines.
Emergency plumbing in Santa Rosa
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 Santa Rosa homes, based on local conditions.
Where Santa Rosa's water comes from
Santa Rosa's primary water source is the Russian River, supplied by Sonoma Water, which pumps river water naturally filtered through rock, sand and gravel from wells about 100 feet below the riverbed; local groundwater from the Santa Rosa Plain is a secondary source. [1]
Polybutylene-era homes in Santa Rosa
The median home in Santa Rosa was built in 1981, and 48% 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 Santa Rosa homes
Every plumbing service in Santa Rosa
Services marked “Santa Rosa guide” have a page on local rules and conditions; the rest link to the full service guide, which applies here too.
- Backflow Testing
- Bathroom Remodel Plumbing
- Burst Pipe Repair
- Drain Cleaning
- Emergency Plumber
- Faucet Repair and Replacement
- Frozen Pipe Repair
- Garbage Disposal Repair and Installation
- Gas Line Installation and Repair
- Kitchen Remodel Plumbing
- Leak Detection
- Outdoor Faucet and Hose Bib Repair
- Pipe Repair
- Repiping
- Sewer Backup
- Sewer Camera Inspection
- Sewer Line Repair
- Sewer Line Replacement
- Shower & Bathtub Plumbing
- Slab Leak Repair
- Sump Pump Repair and Installation
- Tankless Water Heaters
- Toilet Installation
- Toilet Repair
- Trenchless Sewer Repair
- Water Filtration Systems
- Water Heater Repair
- Water Heater Replacement
- Water Line Repair
- Water Pressure Problems
- Water Softener Installation
- Well Pump Repair
Santa Rosa plumbing questions
Where does Santa Rosa's water come from?
Mainly the Russian River, pumped by Sonoma Water from wells deep beneath the riverbed, with local groundwater as a backup source.
Why is Russian River water filtered through gravel first?
Sonoma Water draws it from wells about 100 feet below the riverbed, so rock, sand and gravel naturally filter the water before it is treated.
What plumbing should be checked in a home rebuilt after the 2017 fires?
Rebuilt homes have new plumbing, but check that the water heater is strapped and vented, the pressure regulator works, and fire sprinkler lines, if installed, are inspected.
Do Santa Rosa homes need backflow testing?
Homes with landscape irrigation, fire sprinklers or a second water source may have a backflow assembly that needs annual testing by a certified tester; your water provider can confirm whether your property has one on record.
Sources (2)
- U.S. Census Bureau, ACS 2024 1-year (B25035) · checked 2026-10-01
- Sonoma Water, Water Supply · checked 2026-10-04