4.7 
11 *The Angi rating for Septic Tank Service companies in Mill Valley, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Septic Tank Service needs.
*The HomeAdvisor rating for Septic Tank Service companies in Mill Valley, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Septic Tank Service needs.
Last update on September 17, 2026
Serving Mill Valley, CA and surrounding areas
Approved
In business since 2013
Free estimates
Credit card accepted
"Quick response to a blocked septic tank!"
Serving Mill Valley, CA and surrounding areas
Approved
In business since 2003
Warranties offered
Credit card accepted
"Good service. Nice clean team"
+4
Serving Mill Valley, CA and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Miguel is responsive and professional. He has a confident grasp of excavation project options."
+11
Serving Mill Valley, CA and surrounding areas
Approved
In business since 2021
Free estimates
Offers commercial services
"John was very helpful and professional. His crew was polite and experienced. He fixed our drainage/ leakage problem completely. We were very happy with his work."
Serving Mill Valley, CA and surrounding areas
Approved
In business since 2025
Emergency services offered
Warranties offered
"Jesus was very professional in explaining and showing me what was going on with my drains. Out of the bids I got to replace my house drain we was the most responsible and very knowledgeable. 20k for three bathrooms under crawl space"
+7
Serving Mill Valley, CA and surrounding areas
Approved
In business since 2017
Free estimates
Customers say: True professional
"Leo was very helpful and quick to respond. We’re happy with how our 2 bathrooms turned out. Project was completed within the time promised. Our only complaint is that the workers did not clean up very well. But overall, we’re satisfied and we’ll use them again."
+1
Serving Mill Valley, CA and surrounding areas
Approved
In business since 2019
Free estimates
Credit card accepted
"Ariel was great in explaininf the process to me and Omar and Ivan were very beat an kept me informed on what was happening. A love my beautiful bathroom."
Serving Mill Valley, CA and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
Here at Raya Engineering, we sustain our company on the principal that our customers come first. We offer services that are tailored to your needs and we're ready to show you what our experience can bring to your project! Call us today!
Serving Mill Valley, CA and surrounding areas
Approved
In business since 2019
Free estimates
Credit card accepted
RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!
Serving Mill Valley, CA and surrounding areas
In business since 2007
Free estimates
Emergency services offered
"It was great luck that Jason of J Drains was working on a job near my home and was able to come by after he finished that job to check my hot water heater. He fixed it right away because he spotted what was wrong quickly. Jason was very professional and polite. I recommend this company!"
+4
From average costs to expert advice, get all the answers you need to get your job done.
How Much Does It Cost to Pump a Septic Tank in San Francisco, CA?
If it’s been there for a while, it can be hard to find the septic tank in your yard. Learn how much it costs to locate a septic tank with this guide.
It’s crucial to install a septic tank with the right volume to avoid wastewater backups. This guide will help you calculate the right septic tank volume.
Septic tank sizes vary depending on the size of your home, how many people live there, how much water you use, and more. Read on to learn how to determine the right size for you.
If you’ve never lived in a house with a septic system before, you might be wondering: Are septic tanks bad? Here are some of the pros and cons.
Want to learn how to build a septic tank for your rural or off-grid property? First, check your local laws, then dive into these general guidelines.
