"Highly Recommend Marin H2O"
On time, efficient, thorough, skilled workers, excellent work.
R
Richard Parker
"I highly recommend the Marin H2O team"
Josh, their technician, was very helpful and had a great attitude.
d
devin patel
"Franklin Absolutely Knows What He's Doing"
Franklin absolutely knows what he's doing and takes the time to make sure he's doing it right.
L
Lynn R
"Marin H2O Was Fantastic!"
Josh was able to fix it within hours and suggested ways to mitigate problems in the future.
D
Damian Fagan
"Jeff was terrific"
Punctual, professional, efficient and great to work with.
M
Mark Stearns
"Marin H2O Is the Best"
None compare to the prompt and courteous service I receive every time from Marin H2O.
Highly Recommend Marin H2O
On time, efficient, thorough, skilled workers, excellent work, concerns addressed with lasting quality. Highly recommend Marin H2O.
Stacey Drew
I highly recommend the Marin H2O team
450 Architects hired Marin H2O to help one of our clients determine why they consistently had sewer back-up issues. After a few hours using a camera to scope the lines, they determined exactly what the issue was. Josh, their technician, was very helpful and had a great attitude. I highly recommend the Marin H2O team. Richard Parker, AIA, LEED AP, Principal, 450 Architects
Richard Parker
Franklin Absolutely Knows What He's Doing
Just had the pleasure of having Franklin from Marin H2O out to our house. Franklin absolutely knows what he's doing and takes the time to make sure he's doing it right. Because of this experience, we will definitely be using Marin H2O in the future. Thank you so much!
devin patel
Marin H2O Was Fantastic!
Marin H2O was fantastic! I had a spontaneous leak in a copper pipe on a Friday afternoon. Yikes! Water everywhere. Josh was able to fix it within hours and suggested ways to mitigate problems in the future. Thank you!!!
Lynn R
Jeff was terrific
Jeff was terrific. Punctual, professional, efficient and great to work with.
Damian Fagan
Marin H2O Is the Best
Marin H2O is the best. I have used plumbing companies over the years, and all over the West. None compare to the prompt and courteous service I receive every time from Marin H2O.
Mark Stearns
Serving Novato, Marin County and beyond
Water Filtration Company Marin County
If you're looking for a high-quality and affordable whole house water filtration system, you've come to the right place. At Marin H2O, we understand how vital clean, safe water is for your property. Poor water quality can lead to health concerns, appliance damage, and even higher utility bills. Whether you're noticing strange odors, discoloration, or just want to improve the overall quality of your water, our team at Marin H2O has the expertise to evaluate your water filtration needs and install a system tailored to your property.
Choose our trusted water filtration system specialists to deliver the results you can rely on. Call Marin H2O at (415) 877-9745 today!
Why Trust Our Services?
Quality Work Backed By Warranty
Enjoy peace of mind with our one-year labor warranty on all work.
One-Stop Plumbing And Water Treatment
From repairs to water filters, we handle every plumbing need in-house.
Free Estimates & Same-Day Service
No surprises—transparent pricing and fast response for every job.
Expert Plumbing Since 1961
Family-owned, trusted solutions in Marin & Sonoma Counties.
Trusted Plumbing Solutions for Marin and North Bay
Why Choose Marin H2O for Your Plumbing & Water Needs
At Marin H2O, we’re proud to be your trusted, family-owned experts for plumbing and water treatment across the North Bay Area. Backed by decades of experience, our team is dedicated to delivering honest, dependable service and solutions to homes and businesses—no matter the size or complexity of the job.
Why Choose Us:
Serving Marin since 1961—local and family-owned
Free estimates and water analyses
Same-day and emergency service available
All work comes with a one-year labor warranty
Complete in-house service backed by trusted partners
Full transparency and exceptional customer care
Marin County Water Filtration Systems Call for More Information Today!415-877-9745
