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Avatar for G Septic Service
G Septic Service
4.9(
15
)
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Cotati, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"This was the 1st time using this G-septic as the other company we have used in the past appears to not be in business anymore. Was thoroughly impressed by the services we received, we had them pump our tank and after they finished they noticed my main pipe entering the tank was cracked. They were able to not only let us know of the need for a repair but gave us a price to fix it. He dug out the trench and quickly fixed it at a very very reasonable price. Super pleased, had a great conversation with Edgar the owner while he was onsite turns out this man who looks to be in his late 20's has been doing this work for 20 years and boy you can tell, he is so knowledgeable, sure glad we stumbled upon him when we Google searched septic pumpers."
Response time7 hrs
7 neighbors recently requested a quote
Recommended by92%of homeowners
Superior Septic Pumping Service
4.4(
30
)
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Cotati, 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
Avatar for Sanitary Solutions Corp
Sanitary Solutions Corp
5.0(
2
)
Septic Tank - Clean or Pump OutSeptic System - Install or ReplaceSeptic System - Install or Replace - For Business+3 more

Serving Cotati, CA and surrounding areas

Approved

In business since 2025

Free estimates

Offers commercial services

"They are family owned and operated. Jorge was very friendly and professional, and did everything to help. They even moved the tops of the tanks that must have been over a hundred pounds to a different location and installed Risers. We had to find where the septic tanks were, and what type of tanks, and what was needed to bring the tanks up to code. So we can sell the property. We would recommend them to anyone."
1 neighbors recently requested a quote
JOHN MOUNTAIN
5.0(
7
)
Septic System - Install or ReplaceSeptic System - RepairSeptic System - Install or Replace - For Business+1 more

Serving Cotati, 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."
Response time10 hrs
13 neighbors recently requested a quote
Recommended by57%of homeowners
Avatar for PEREZPLUMBING
PEREZPLUMBING
5.0(
15
)
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Cotati, CA and surrounding areas

Approved

In business since 2025

Emergency services offered

Warranties offered

"Jesus Perez came right away on a Saturday to fix a leak that had been occurring underneath our kitchen sink. He was professional, polite and proficient! He had it fixed quickly. His rates are great. And he warranties the work. As new homeowners we are so glad to have Jesus as our official go to for any future plumbing needs."
Septic tank pump out
Septic tank pump out
Kitchen sink install
Kitchen sink install
Kitchen sink install

+7

Avatar for Bowen Plumbing
Bowen Plumbing
4.4(
8
)
Septic System - RepairSeptic System - Repair - For Business

Serving Cotati, CA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"I had a leak in a pipe in the radiant heating pipes in the slab under my house. James was able to isolate the leak and re plumb my system without cutting a hole in the slab. He and his crew did some great creative plumbing that took care of the leak and separated the unused radiant system from my household plumbing and they even installed a new tankless heater in a single days work.. I recommend James and Bowen Plumbing without reservation. They are the Best!"
Response time5 hrs
Recommended by71%of homeowners
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Septic Tanks questions, answered by experts

The average lifespan of a deep well pump is between 15 and 25 years, after which you’ll have to replace it. Several factors can affect the lifespan of a well pump, such as the quality of the unit. Proper maintenance and repair can also help extend your well pump’s lifespan as well as keep adequate water flow and pressure throughout your home.

The average cost to replace a septic tank or install a new system is typically around $7,350, with a broader average range of $5,000 to $12,000. However, total project costs can vary widely, from $5,000 to as much as $22,500. Key factors influencing the price include the size and type of the septic system, the tank material, and the size of your house.

It's important to distinguish between the cost of the tank itself and the cost of the entire system installation, which is significantly more. For the tank alone, costs vary by size:

  • A tank for a one-bedroom house typically costs $500 to $900.

  • A 1,000-gallon tank, suitable for most one- to three-bedroom homes, costs between $900 and $1,500.

  • A tank for a five- or six-bedroom home generally costs $1,200 to $1,600.

A mound septic system, when properly maintained, can last between 20 and 25 years on average—though some last longer or malfunction sooner than that. The most important part of maintenance is getting an annual inspection of the vital parts of the system to ensure they’re in proper working order and not too backed up with sewage.

Most homeowners know there’s a septic system problem when they can smell one. However, this isn’t exactly a scientific deduction method. Consider some of the other signs: standing water or constantly damp earth in the drainage area, toilets and sinks that won’t drain or frequently back up, and loud plumbing. You really need to be on top of routine maintenance with septic systems in order to avoid such unpleasant symptoms of a septic issue. 

Trenches are typically 12 to 24 inches deep and 8 inches wide. However, the required depth depends on the specific project and local ordinances. For example, a French drain may need to be 18 inches deep, while a water pipe might require a depth of 24 inches and a drainage pipe 36 inches. Your city or county may have specific regulations, so it's wise to consult with an excavation professional to determine the correct depth for your project.

The Cotati, CA homeowners’ guide to septic tank services

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