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Verified Reviews for Septic Tank Service pros in Lagunitas-Forest Knolls, CA

*The Angi rating for Septic Tank Service companies in Lagunitas-Forest Knolls, 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 Lagunitas-Forest Knolls, 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 December 15, 2025

Find Septic tank pros in Lagunitas-Forest Knolls

Avatar for Moore Home Services

Moore Home Services

4.80(
356
)
•Approved Pro

Moore Home Services

4.80(
356
)
•Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
16 years of experience

At Moore Home Services, your comfort is our promise. Since 2009, we’ve grown into a trusted HVAC leader across Northern California with 50+ trucks and 100+ highly trained team members. We believe in 100% honesty—if a simple repair is best, that’s exactly what you’ll get. Our HVAC services come with a 1-Year Trial Guarantee: if you’re not completely satisfied, we’ll refund every penny. From furnace repairs to A/C installs, our friendly, expert techs are here to help—because your happiness is our only goal.

"Orion C. Arrived on time with a friendly smile to perform my annual Fall checkup. He provided outstanding service - professional, knowledgeable, and always courteous throughout! My system runs perfectly and I would highly recommend their excellent service as represented by Orion! They are clearly committed to customer satisfaction."

Steve B on September 2025

At Moore Home Services, your comfort is our promise. Since 2009, we’ve grown into a trusted HVAC leader across Northern California with 50+ trucks and 100+ highly trained team members. We believe in 100% honesty—if a simple repair is best, that’s exactly what you’ll get. Our HVAC services come with a 1-Year Trial Guarantee: if you’re not completely satisfied, we’ll refund every penny. From furnace repairs to A/C installs, our friendly, expert techs are here to help—because your happiness is our only goal.

"Orion C. Arrived on time with a friendly smile to perform my annual Fall checkup. He provided outstanding service - professional, knowledgeable, and always courteous throughout! My system runs perfectly and I would highly recommend their excellent service as represented by Orion! They are clearly committed to customer satisfaction."

Steve B on September 2025

Avatar for Quality Pump Service

Quality Pump Service

4.51(
47
)
•Approved Pro

Quality Pump Service

4.51(
47
)
•Approved Pro
Customers say: Quick response
15 years of experience
Emergency services offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Promptness in responses. Professional and courteous and did quality work! "

Jayson T on July 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Promptness in responses. Professional and courteous and did quality work! "

Jayson T on July 2025

Avatar for Prosper Construction Development, Inc.

Prosper Construction Development, Inc.

4.88(
38
)
•Approved Pro

Prosper Construction Development, Inc.

4.88(
38
)
•Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
12 years of experience

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!

"Fast response and clear communication throughout the process."

Marco T on April 2025

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!

"Fast response and clear communication throughout the process."

Marco T on April 2025

Superior Septic Pumping Service

4.87(
26
)
•Approved Pro

Superior Septic Pumping Service

4.87(
26
)
•Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
12 years of experience

Superior Septic Pumping Service has been serving the community with over 15 years of experience and with affordable rates and an excellent attention to detail. References are available and we pride ourselves on working around your schedule and respecting your privacy and property. We thank you in advance for allowing us to give your home the attention it deserves.

"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."

Donna M on November 2021

Superior Septic Pumping Service has been serving the community with over 15 years of experience and with affordable rates and an excellent attention to detail. References are available and we pride ourselves on working around your schedule and respecting your privacy and property. We thank you in advance for allowing us to give your home the attention it deserves.

"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."

Donna M on November 2021

Avatar for M P Excavating & Engineering

M P Excavating & Engineering

4.73(
13
)
•Approved Pro

M P Excavating & Engineering

4.73(
13
)
•Approved Pro
Customers say: Quick response
7 years of experience
Free onsite estimate

Here at MP Excavating and Engineering we are a full service licensed excavation and general ground work contractor. No projects is out of our wheelhouse and we pride ourselves on keeping all of our jobs running smoothly and under budget. Call now for a free estimate.

"Ultimately happy with the end result and fair price for our 30ft sewer lateral replacement. Miguel was professional, friendly, and hardworking. However, communication was a bit spotty and we had follow up many times (I understand this is the busy season, though). Also, it was unclear if we were supposed to call 811; we assumed he would, but didn't, and this was an issue as the water line was hit during construction and the city had to come to shut it off on the whole street. It was handled quickly, but would have been avoidable. The project ended up taking much more time than expected, but it was completed in a day, as promised. I would recommend him, but you should be diligent and responsible yourself to make sure all the right steps are being taken."

Joanne H on June 2025

Here at MP Excavating and Engineering we are a full service licensed excavation and general ground work contractor. No projects is out of our wheelhouse and we pride ourselves on keeping all of our jobs running smoothly and under budget. Call now for a free estimate.

"Ultimately happy with the end result and fair price for our 30ft sewer lateral replacement. Miguel was professional, friendly, and hardworking. However, communication was a bit spotty and we had follow up many times (I understand this is the busy season, though). Also, it was unclear if we were supposed to call 811; we assumed he would, but didn't, and this was an issue as the water line was hit during construction and the city had to come to shut it off on the whole street. It was handled quickly, but would have been avoidable. The project ended up taking much more time than expected, but it was completed in a day, as promised. I would recommend him, but you should be diligent and responsible yourself to make sure all the right steps are being taken."

Joanne H on June 2025

RSF Construction Inc.

New on AngiNew on Angi
•Approved Pro

RSF Construction Inc.

New on AngiNew on Angi
•Approved Pro
6 years of experience
Free onsite estimate

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!

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!

Raya Engineering

New on AngiNew on Angi
•Approved Pro

Raya Engineering

New on AngiNew on Angi
•Approved Pro
14 years of experience
Free onsite estimate

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!

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!

Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

4.85(
347
)

Environmental Testing & Research Laboratories, Inc

4.85(
347
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

Avatar for Gifford Anderson Plumbing Inc

Gifford Anderson Plumbing Inc

4.91(
45
)

Gifford Anderson Plumbing Inc

4.91(
45
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Gifford Anderson Plumbing is a family-run plumbing service offering prompt, quality, reliable service. We have been raising the bar for premier plumbing service in Sonoma County for over 25 years! Our company provides the highest quality service no matter how small the job. Whether you're in need of home plumbing maintenance and repairs, bathroom remodeling, or a commercial plumbing contractor for your latest building project, we are there to provide you with the most dependable service available. We are fully licensed and insured (License No. 795619). Specializing in: - Complete Plumbing Repairs - Bathroom and Kitchen Remodeling - Water & Sewer Mains Repair & Replace - Water Heaters - Commercial Plumbing Systems - Design/Build - Gas Leak Detection - Slab Leak Repairs - Drain Cleaning We provide FREE ESTIMATES...give us a call or fill out the form on the "Request an Estimate" page on this site.

Gifford Anderson Plumbing is a family-run plumbing service offering prompt, quality, reliable service. We have been raising the bar for premier plumbing service in Sonoma County for over 25 years! Our company provides the highest quality service no matter how small the job. Whether you're in need of home plumbing maintenance and repairs, bathroom remodeling, or a commercial plumbing contractor for your latest building project, we are there to provide you with the most dependable service available. We are fully licensed and insured (License No. 795619). Specializing in: - Complete Plumbing Repairs - Bathroom and Kitchen Remodeling - Water & Sewer Mains Repair & Replace - Water Heaters - Commercial Plumbing Systems - Design/Build - Gas Leak Detection - Slab Leak Repairs - Drain Cleaning We provide FREE ESTIMATES...give us a call or fill out the form on the "Request an Estimate" page on this site.

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FAQs for septic tank service projects in Lagunitas-Forest Knolls, CA

The cost to replace a septic tank is $7,350 for the average homeowner. This cost can range, however, from $470 to $22,500, depending on several factors. Your house size is a significant factor in the overall cost, but other things like material type impact the final price tag. For example, installing a new septic tank in a one-bedroom house typically costs $500 to $900, whereas installing a new septic tank in a five or six-bedroom home is generally $1,200 to $1,600.

Yes, most states require septic tank installers to have a license, and for good reason. Hiring an unlicensed septic tank pro could lead to poor quality work, costly future expenses, and potential code violations. 

As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include: 

  • The owner, principal, or relevant manager passed a criminal background check

  • Required to have applicable state and local licenses

  • Maintain an average star rating of 3.0 or better on our network, if they have at least one review

  • Paying to advertise their services

  • Meeting any other eligibility criteria required by Angi

Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.

The cost of septic tank repair is $1,775 for the average homeowner. However, depending on a few elements, you might pay as little as $170 or as much as $6,100. Location, repair type, and tank material all determine the final cost. For example, replacing the septic tank filter can be as little as $200 to $300. However, repairing septic lines costs more, averaging around $1,500.

A septic tank can typically last 15 to 20 years on average, though your system's lifespan will vary depending on the type of septic system and the materials used. To help increase your septic tank's lifespan, schedule routine maintenance and do not flush items like cat litter, cigarette butts, or paper towels.

Repairing or replacing a septic tank is a job best left to a professional. Your septic tank is an essential part of your home, and if installed or repaired incorrectly, it could lead to significant problems. Things like polluted water, property damage, and health risks to your family could all happen as a result of an improper septic tank repair or installation.

The Lagunitas-Forest Knolls, CA homeowners’ guide to septic tank services

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

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