Which San Rafael Sewer District Are You?
San Rafael, California is split between two sewer agencies, and the dividing line is a hill. Central San Rafael, running generally south from the top of Puerto Suello Hill, is served by the San Rafael Sanitation District, which is a collection and transport district — it does not treat wastewater itself, sending it instead to the Central Marin Sanitation Agency. North of that hill, Terra Linda, Marinwood, Lucas Valley and Santa Venetia fall under the Las Gallinas Valley Sanitary District, which runs its own treatment and recycling plant. Two San Rafael addresses a mile apart can therefore have entirely different sewer agencies. Water throughout is supplied by Marin Water. No private lateral point-of-sale ordinance is documented for San Rafael Sanitation District. Avanté Plumbing works across Marin County under CSLB licence #841938 (C-36 Plumbing), family-run since 2004.
What does a plumber cost in San Rafael?
Avanté Plumbing charges the same rates across every city we serve, so these are the San Rafael prices — there is no travel surcharge and no per-neighborhood pricing.
| Water heater replacement (40–50 gal tank) | $2,500–$2,850 |
|---|---|
| Tankless water heater (Navien), installed | $5,400–$6,500 |
| Drain cleaning, kitchen line to main | $195–$465 |
| Toilet repair & installation | $195–$565 |
| Leak detection & repair | $175–$5,000 |
| Sewer repair & replacement | $350–$6,000 |
| Whole-house repipe | $4,500–$10,000 |
| Gas line repair or new gas line | $250–$3,000 |
| Sewer camera inspection | $225–$325 |
| Garbage disposal installation | $250–$425 |
| Appliance hook-ups & water softeners | $650–$3,000 |
Standard labor rate is $175 an hour. Diagnostic fee is $45 and comes off the job if you go ahead. Kitchen and bathroom remodel plumbing is quoted per job; a full written estimate is $55.
Prices current as of September 2026. Every job is quoted before work starts.
Last updated: August 2026 · Written by Karl D'Angelo, CSLB #841938 (C-36 Plumbing), plumbing in Sonoma & Marin since 2004.
Dedicated plumbing solutions tailored for San Rafael residents. Experience quality service and dependable results with Avante Plumbing.
Expert installation and repair for reliable hot water solutions.
Fast, reliable sewer repair to keep your home running smoothly.
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Local detail
Plumbing in San Rafael: what's actually different here
Water chemistry, housing age and city rules vary across the North Bay. Everything below is sourced from San Rafael and Marin County public records.
Which sewer district covers my San Rafael address?
It depends which side of Puerto Suello Hill you are on. San Rafael Sanitation District covers Central San Rafael, generally south from the top of the hill, including unincorporated pockets within that jurisdiction. Las Gallinas Valley Sanitary District covers the northern side — Terra Linda, Marinwood, Lucas Valley, Santa Venetia and Los Ranchitos. Confirm by address rather than by city name.
Does San Rafael Sanitation District treat its own sewage?
No. It is documented as a collection and transportation district: it runs the pipes and sends the flow to Central Marin Sanitation Agency for treatment. That is a real difference from Las Gallinas over the hill, which treats and recycles its own wastewater. It matters mainly for who you call — the collection district owns the main, the regional agency owns the plant.
How hard is San Rafael's water?
Marin Water supplies it, reporting 58 mg/L (range 49–67) for one source and 123 mg/L (range 110–130) for another in its 2024 Annual Water Quality Report, because it blends local reservoir water with imported supply. Softer than most of Sonoma County but not uniformly soft, and the applicable figure depends on the blend reaching your street.
Available in San Rafael
Plumbing services we provide here
- Appliance Water Line Hookups→
- Backflow Prevention Testing & Installation→
- Commercial Plumbing Services→
- Drain Cleaning & Hydro Jetting→
- Fixture Installation (Faucets, Sinks, Toilets & Showers)→
- Garbage Disposal Repair & Installation→
- Gas Line Repair & Leak Detection→
- Kitchen & Bathroom Plumbing Remodels→
- Leak Detection & Repair→
- Whole-Home Repiping→
- Pump & Well Repairs→
- Sewer Camera Inspections→
- Sewer Repair & Replacement→
- Toilet Repair & Replacement→
- Trenchless Sewer Repair→
- Water Heater Repair & Replacement→
- Water Heater Installation (Tank & Tankless)→
- Water Softener Installation→
Reviews
What North Bay customers say
“Karl is a great plumber... knowledgable, skilled, caring, and at a fair cost! one of the problems was significantly worse than I thought possible and I was offered a discount before asking”
“Karl was great, he showed up on time and did great work in a timely manner. I was impressed with his professional and expert work. i will use him again! Thanks again for your great work.”
“Karl of Avante Plumbing did a great job for me. I had a leak in the wall of my bath/shower running under the house making a mess. Karl came out same day and fixed the problem swiftly and professionally. The cost was very reasonable and I would recommend him to anyone.”
Rated 4.9 stars across 32 Google reviews — read all 32 reviews, or see photographs of real jobs across Sonoma and Marin.
Common questions
Plumbing in San Rafael — FAQs
Does Avanté Plumbing serve San Rafael, CA?
Yes. San Rafael is one of 32 cities we cover across Sonoma and Marin County, working from our base at 1677 Centurion Dr in Santa Rosa. Nearby Marin County cities we also serve include Belvedere, Corte Madera, Fairfax.
What plumbing services are available in San Rafael?
All 18 of our services are available in San Rafael: repairs and maintenance (leak detection, clogged drains, toilet repair, water heater repair, garbage disposals, gas lines, pump and well repairs), installation and replacement (water heaters, fixtures, whole-home repiping, sewer main lines, water softeners, appliance water lines), and specialty work (sewer camera inspections, trenchless sewer repair, hydro jetting, backflow prevention testing, kitchen and bathroom remodel plumbing, and commercial plumbing).
Do you serve both homes and businesses in San Rafael?
Yes. Avanté Plumbing takes on residential and commercial work in San Rafael, from a single leaking fixture in a home to plumbing an entire commercial fit-out. Our commercial experience includes a full plumbing package for the L'Occitane store in Montgomery Village, Santa Rosa.
Is Avanté Plumbing licensed and insured to work in San Rafael?
Yes. Avanté Plumbing holds California CSLB licence #841938 (C-36 Plumbing), issued in 2004 and current and active, backed by a $25,000 contractor's bond and workers' compensation insurance. The licence is issued by the state and valid throughout California, including San Rafael. You can verify it on the CSLB website at any time.
How do I get a quote for plumbing work in San Rafael?
Call (707) 231-0790 or send the details through the contact form. We diagnose the problem first and quote it before any work starts, so you can decide with the number in front of you.
Sonoma & Marin County
Need a plumber in San Rafael?
Call (707) 231-0790 or send a note — we'll get back to you fast with a straight answer.
Licensed, bonded & insured · CSLB #841938 · Mon – Sun, 7:00 AM – 7:00 PM