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TRUSTED BY MILL VALLEY, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon11
    Verified septic tank services reviews

Verified Reviews for Septic Tank Service pros in Mill Valley, CA

*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 June 03, 2026

Find Septic tank pros in Mill Valley

Superior Septic Pumping Service
4.4(
30
)
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"When our septic pump stopped working I called Superior Septic. Angel came out and figured out the complicated problem that could have eluded someone with less experience, and skill. I am impressed with how fast he fixed our pump. I highly recommend him and his company."
Response time6 hrs
Recommended by92%of homeowners
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Avatar for Divine Electric, Inc.
Divine Electric, Inc.
4.5(
30
)
Septic System - Install or Replace

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2003

Warranties offered

Credit card accepted

"Divine Electric was quick to respond to inquiries. It was easy to book an appt and a professional technician was sent on location. Our electrician was Josh and he was absolutely professional, efficient and was diligent in working through the problem. He fixed the issue and was very courteous while he was at our home."
Service Marin since 2003!
The team!
The team!
The team!
The team!

+4

Response time1 day
19 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for M P Excavating & Engineering
M P Excavating & Engineering
4.5(
15
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

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."
Large drainage project
Large drainage project
Large drainage project
Large drainage project
Large drainage project

+11

Response time1 day
Response rate98%
28 neighbors recently requested a quote
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JOHN MOUNTAIN
5.0(
7
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2021

Free estimates

Offers commercial services

"I cannot say enough about how good this experience with John Mountain/Mountain Engineering has been. They said it would be 3 weeks; anti was. The work was painstakingly done, including a French drain behind the wall. And they replaced the plants that were destroyed during the process, which was an unexpected bonus."
Response time10 hrs
10 neighbors recently requested a quote
Recommended by57%of homeowners
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Avatar for PEREZPLUMBING
PEREZPLUMBING
5.0(
15
)
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

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"
Septic tank pump out
Septic tank pump out
Kitchen sink install
Kitchen sink install
Kitchen sink install

+7

2 neighbors recently requested a quote
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Avatar for West Peak Builders, Inc.
West Peak Builders, Inc.
4.4(
43
)
Septic System - Repair

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Leo went out of his way to meet my concerns about cost, collaboration with my neighbor, and how the fence would look. He submitted multiple bids giving me options as to how to do it and at what cost. He tailored his approach to my needs. His team was easy to work with. The team worked quickly, efficiently, and throughly. The fence looks great!"
Response time6 hrs
Response rate100%
1 neighbors recently requested a quote
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Avatar for McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.7(
42
)
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: True professional

"We could not be happier with our new bathroom, thanks to McCormick! Khaled was knowledgeable and really took the time to understand our style preferences. The whole team was great about keeping the workspace tidy, which we appreciated. Now, we have a bathroom that feels luxurious and welcoming. Highly satisfied with their work!"
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.
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+1

Response time6 hrs
Recommended by15%of homeowners
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Raya Engineering
New to Angi
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

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!

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RSF Construction Inc.
1.0(
1
)
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

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!

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Showing 1-10 of 33
Septic Tanks questions, answered by experts

If your septic tank is still within its expected lifespan and you need to relocate it on your property, it's possible to do so. However, because the task is so labor-intensive and costly, most homeowners simply choose to abandon the old tank if possible and install a new system in the new location. In either case, hiring a professional installation company will be necessary for the job. 

Pump the tank every 3-5 years, avoid flushing non-degradable items, and address leaks promptly to extend system life.

While homeowners connected to a municipal sewer line still have to keep up with plumbing maintenance, the downside to a septic system is that all the maintenance falls on the homeowners. Not calling in a pro to pump the tank every few years or accidentally flushing or draining the wrong types of materials can quickly cause clogs, which can back up into drains around the home.

A septic alarm can sound different depending on your system, but often, it’s a loud, repetitive beeping noise or a steady, high-pitched noise. It may also be a loud buzzing noise. To confirm the noise is your septic alarm, check your alarm box for a red light. You can also silence your alarm with a red button or switch on the box. Look for something that says “Test” or “Mute.”

While abandoning a tank without treating it and following strict rules is illegal, there are several other ways to dispose of an old septic tank. One standard method is to pump out and crush the tank where it rests and bury it in the soil. Another is to remove it and transport it to a landfill. Finally, if abandonment is the best option, your contractor must pump out the tank and fill it with inert material, such as sand or concrete, depending on local regulations.

The Mill Valley, CA homeowners’ guide to septic tank services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles