Top-rated septic tank pros.

Get matched with top septic tank pros in Mill Valley, CA

Enter your zip and get matched with up to 5 pros

Need a pro for your septic tank service project in Mill Valley, CA?

Select your specific project to find the pro for you.

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

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
Request Quote
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
Request Quote
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
Request Quote
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
Request Quote
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!"
.
.
.
.
.

+1

Response time6 hrs
Recommended by15%of homeowners
Request Quote
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!

Request Quote
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!

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

Since vinegar is a weak acid with a pH of two to three, it’s generally safe for septic systems. It won’t eat away at the good bacteria in your septic tank and can help break down the sludge, which is its bottom layer. However, like with everything in life, moderation is key.

You only need to pump the septic tank. The leach field allows the liquid and waste to naturally seep into the ground, so there’s no need to pump the leach field. You should call a local septic tank pumping service to remove the materials from the tank every three to five years. Without pumping the septic tank occasionally, solids could flow into the leach field pipes and clog them.

Concrete septic tank risers are heavier and more durable than plastic or fiberglass ones, making them suitable for long-term use. Installing a concrete riser differs from installing plastic or fiberglass risers primarily in the materials and methods used. The process involves cutting the concrete risers to the required length and then stacking them, using concrete sealant or adhesive between sections for secure attachment. Due to their weight, extra care is necessary during leveling and the attachment of sections. Concrete sealant or adhesive may also require a curing before the riser is ready for use.

Buying a well drilling kit will save you money over hiring a professional. That said, digging a well is risky. If you make an error, you may have to get help fixing it. Also, the DIY costs are still pretty hefty when considering everything needed to complete the project successfully. You’ll need to account for the permit, pump, water tank, and more. If you don’t feel comfortable taking the necessary precautions to tackle this on your own, go with a pro.

All municipalities in the U.S. require a permit for septic tank installation or septic system alteration, and the permit will usually cost between $450 and $2,500. Some municipalities also require permits for septic system repair. You’ll either need to contact your local building department or your septic tank company to ask if this is necessary before carrying out the work. Permits are not typically required to have your septic tank pumped, so provided your septic company is licensed, you can move forward with the work as needed.

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