Plumbing companies in Santa Rosa, CA
Quick answer
2 plumbing companies have a local office in Santa Rosa, CA on 1-800Deals: Mr. Rooter Plumbing of Sonoma County and Roto-Rooter Santa Rosa, CA. Santa Rosa Water buys about 95% of its supply from Sonoma Water, which draws Russian River water through collector wells about 80 feet below the riverbed, and produces the rest from local groundwater wells. Santa Rosa Water calls its drinking water very low risk for lead.
Last updated September 28, 2026. Sources are linked below.
Plumbing companies serving Santa Rosa and nearby Sonoma County communities, with the services and service areas each one lists. We list 2 companies with a local office here:
- Mr. Rooter Plumbing of Sonoma County, , Santa Rosa. Services include garbage disposals, plumbing, toilet repair and replacement, sump pump services, emergency plumbing, pipe insulation; serves Annapolis, Bodega Bay, Bodega, Boyes Hot Springs, Calistoga, Camp Meeker, Cazadero, Cloverdale, Cotati, Duncans Mills and more.
- Roto-Rooter Santa Rosa, CA, 3402 Mendocino Ave, Santa Rosa. Services include drain cleaning, emergency plumber, water heater repair, commercial plumbing, excavation, sump pump; serves Sebastopol, Cloverdale, Santa Rosa, Cotati, Petaluma, Healdsburg, Windsor, Rohnert Park, Sonoma, Forestville and more.
What to know about plumbing in Santa Rosa
Russian River water, moderately hard
Santa Rosa Water buys about 95% of its supply from Sonoma Water, which draws Russian River water through collector wells about 80 feet below the riverbed, and produces the rest from local groundwater wells. The city's 2025 water quality report rates the water moderately hard, at an average of 112 parts per million. That is enough mineral content to leave some scale on fixtures and in water heaters over time. Source: Santa Rosa Water: 2025 Water Quality Report
Copper service lines since 1946
Santa Rosa Water calls its drinking water very low risk for lead. Customer service pipes are typically copper or plastic, though a few older homes have galvanized iron pipes, and the city standardized copper service lines in 1946. Its service line inventory, which covers both the public and customer sides, can be searched on an interactive map at SRCity.org/WSLI. Source: Santa Rosa Water: 2025 Water Quality Report
Toilet rebates, but the free install program is closed
As of August 21, 2026, Santa Rosa Water's Direct Install Free High-Efficiency Toilet Program is closed to new applicants. The city still lists a rebate of up to $75 per toilet for replacing an older model with a pre-qualified WaterSense high-efficiency toilet, and a pre-inspection is required before approval. Check the city's WaterSmart page for current terms before a plumber installs the new toilet. Source: City of Santa Rosa: WaterSmart Toilets
Check the license
In California, plumbing contractors are licensed by the Contractors State License Board under the C-36 Plumbing Contractor classification. Look up the contractor's license number on the CSLB website before work starts. Source: official licensing page
Frequently asked questions
Is Santa Rosa water hard?
Moderately. Santa Rosa Water's 2025 water quality report lists average hardness of 112 parts per million, which falls in the moderately hard range.
Does my Santa Rosa home have a lead water line?
Santa Rosa Water calls its water very low risk for lead, since service pipes are typically copper or plastic and copper lines became standard in 1946. You can look up your address on the city's service line inventory map at SRCity.org/WSLI.
Can I still get a free toilet from Santa Rosa Water?
Not through the Direct Install program, which closed to new applicants on August 21, 2026. The city lists a separate rebate of up to $75 per qualifying high-efficiency toilet; check the WaterSmart page for current terms.
1-800Deals lists companies based on the information they publish; a listing is not an endorsement. Before hiring, check licensing, insurance, reviews and a written estimate.
