About Marin H2O
A Local, Family-Owned Business Serving San Rafael since 1961
Marin H2O has been the trusted local team that Marin and Sonoma Counties residents turn to for comprehensive plumbing and water treatment solutions for over 60 years. We're led by Rick Williams, who grew up working alongside his grandfather in his family's Marin-based plumbing business. The values of honesty and integrity that Rick learned from day one continue to shape how we serve our community today.
What started as a small local plumbing company has evolved into a comprehensive network of service providers capable of handling everything from residential repairs to large-scale commercial projects. We've grown not by compromising our standards, but by staying true to the principles that built our reputation while expanding our capabilities to meet the changing needs of Marin and Sonoma County residents and businesses.
Discover what Marin H2O can do for you today by calling our main San Rafael office at (415) 877-9745 and requesting a free service estimate or water analysis!
Let Our Family of Businesses Take Care of Yours
The Marin H2O Difference
We're Rated 4.9 Stars With 94+ Google Reviews!
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Local, Trusted & Licensed
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Offering 100% Free Quotes
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Top-Notch Customer Service
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Backed By a Warranty
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“Marin H2O is highly responsive. Our job was scheduled immediately. The staff showed up promptly, completed the installation quickly and neatly. We just got the bill, and it was a fraction of what another plumbing company wanted to charge us for t”Becket C.
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“Reliable, honest, and efficient! A sewer lateral leak on a shared driveway is no fun - and after interviewing multiple vendors, it was abundantly clear that Marin H2O is the way to go. Very knowledgeable and take the time to educate their custome”Iris K.
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“It's a real pleasure to work with a group of people who are highly professional, know what they are doing, and are trustworthy and dependable. I couldn't have asked for a better outcome and experience.”Benhur M.
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“Prompt, efficient, friendly! Marin H2O did a great job with an emergency repair of an outdoor water main leak between the meter and the shutoff valve inside the house.”Cory L.
- Marin County
- San Rafael
- Sonoma County
Comprehensive Care from a Team You Trust
What makes Marin H2O different is our position within a larger network of specialized businesses, allowing us to provide comprehensive services while maintaining the personal touch of a local company. Whether you need routine maintenance, complex installations, or emergency repairs, our in-house capabilities mean you won't be shuffled between different contractors.
Our commitment to customer service goes beyond completing the job. We build relationships that last. When you work with Marin H2O, you're partnering with professionals who take personal pride in solving your problems right the first time. That's not just good business; it's the way we were raised to work.
Contact Marin H2O today to request your same-day service appointment and see for yourself what our plumbers and water treatment professionals are capable of!