Marin County
Plumber in Mill Valley, CA
CNTRline Plumbing works across Mill Valley, from the cottages around Old Mill Park and Blithedale Canyon to the homes in Tam Valley and Strawberry. We make the drive down from Rohnert Park for the whole southern Marin area. The redwoods and creeks here are beautiful, and they are also hard on plumbing.
Local Plumber
Plumbing in Mill Valley
A lot of Mill Valley homes started as early-1900s summer cabins tucked into the redwoods, and many still run on original clay sewer laterals and dated supply pipe. The redwood and bay canopy means tree roots find their way into old pipe joints, which is one of the most common calls we get here. Homes along Old Mill Creek and up the canyons also deal with damp crawlspaces and steep access.
Tree-root intrusion into old laterals is common under the Mill Valley canopy, so we camera the line, clear the roots, and fix the pipe so it stops coming back.
Neighborhoods we cover: Downtown, Old Mill Park, Blithedale Canyon, Tam Valley, Homestead Valley, Strawberry.
ZIP codes: 94941.
Our Services
What we do in Mill Valley
Water Heater Repair & Installation
Tank and tankless. Same-day replacement for failed units.
Drain Cleaning
Clogged sinks, tubs, and main lines cleared fast.
Gas Line Repair & Installation
Leaks, new lines, additions, and gas main replacement.
Sewer Line Repair
Video inspection, line repair, and full replacement.
Faucet & Fixture Repair
Faucets, sinks, toilets, and shower valves installed and repaired.
Emergency Plumbing
Burst pipes and no-water calls, 7 days a week.
We also handle general service & repair, remodels, and whole-home repipes. Call (707) 308-5599 to ask.
Local service pages for Mill Valley:
Why CNTRline
Why Mill Valley homeowners call us
Licensed & insured
Fully licensed and insured in California, serving the area since 2017.
Same-day & emergency
We answer 7 days a week and can often be out the same day.
Local to Sonoma & Marin
Based in Rohnert Park. We know the homes and the water here.
Straight answers, free quotes
We tell you what’s wrong and what it costs before we start.
Reviews
“Our water heater died on a Sunday. CNTRline had a new one in the same day. Clear pricing, no upsell.”
“Main line was backing up. They ran a camera, found the root, and fixed it without tearing up the whole yard.”
“Called about a gas smell in the morning, they were out fast and handled it. Professional and calm the whole time.”
Nearby
Other Marin County areas we serve
Free Homeowner's Guide
The Sonoma & Marin Homeowner’s Plumbing Guide
Spot problems before they flood, find your shutoffs, and see real 2026 cost ranges. A free PDF, straight from a licensed local plumber.
- 5 signs to call before it floods
- Where your three shutoffs are
- Real 2026 cost ranges for the big jobs