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  • Verified reviews icon19
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Top-Rated Septic tank pros in Gilroy - Updated Nov 2026

Avatar for Central Coast Engineering & Development INC
Central Coast Engineering & Development INC
5.0(
14
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Gilroy, CA and surrounding areas

Approved

In business since 2023

Free estimates

Customers say: Quality work

"Austyn is very talented at operating the escalating machinery. He also is particularly accurate at his grading and uses suitable tools for checking and planning the approach.. These are the reasons I gave him the high marks. Also he is quite a nice fellow. Rob Grandfield Project was finished January 2024 Larkin Valley Hills, Watsonville/Aptos"
Response time1 day
2 neighbors recently requested a quote
Recommended by76%of homeowners
Avatar for TRIO Heating, Air & Plumbing
TRIO Heating, Air & Plumbing
5.0(
5
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Gilroy, CA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"My experience with Trio Heating and Air for my air conditioning installation was exceptional. From start to finish, they demonstrated professionalism and efficiency. The technicians arrived promptly and were well-prepared, guiding me through the process and recommending the perfect system for my home. Throughout the installation, they worked diligently, respecting my space and ensuring everything was installed correctly. Their clear communication and transparent pricing made the experience stress-free. Now, my home is consistently cool and comfortable, and I couldn't be happier with the results."
Heating & Air Conditioning Installations
Heating & AC Install
Heating & AC Install
Heating & AC Install
Heating & AC Install

+101

Response time4 hrs
Response rate93%
9 neighbors recently requested a quote
Superior Sanitation, LLC
New to Angi
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Gilroy, CA and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

Superior Sanitation, LLC is your industry expert in Gilroy and the surrounding areas. We pride ourselves on our extreme professionalism, integrity, attention to detail. We only make promises that we know we will deliver on. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

Response time1 day
Avatar for Hastings Construction, Inc.
Hastings Construction, Inc.
5.0(
10
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Gilroy, CA and surrounding areas

In business since 1991

Free estimates

Offers commercial services

"Total industrial auto building renovation including concrete, electrical, HVAC, lighting, roof, etc. They did an excellent job. Always on time and on budget. They handled all of the plans, engineering and permitting. Great communication and the staff, which includes in-house design, is incredible. I am already using them on another job and would absolutely recommend them again."
Roth Septic Tank install
Septic System Installs
Septic System Installs
Septic System Installs
Septic System Installs

+17

Response time2 days
Recommended by90%of homeowners
Showing 1-10 of 30
Septic Tanks FAQs, answered by experts

Yes, shower water goes into the septic tank. Shower water is a type of greywater, and in fact, all water used in a home with a septic system—including water from sinks, toilets, the dishwasher, and the washing machine—drains into the tank. When shower water enters the tank, debris like soap and hair travels with it. The solid debris sinks to the bottom to become sludge, while soap residue joins the scum layer at the top. The remaining water is treated in the tank before moving to the drain field for further treatment and dispersal. It is important to avoid putting oil or harsh chemicals down any drain, as they can cause clogs or disrupt the beneficial bacteria required for proper wastewater management in the septic system.

The depth of your septic tank has nothing to do with its size. In fact, some septic tanks can even be installed above-ground! Like other sizes, a 1,000-gallon septic tank could be buried as shallow as 4 inches below the ground or as deep as 4 feet. It all depends on your specific property.

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.

Because well water is not artificially filtered or pre-treated, it may contain contaminants. As a result, it’s possible for well water to damage pipes based on what is in the water. Well water can be corrosive, slowly rusting and dissolving pipes, fixtures, and fittings. The corrosion can affect the taste and quality of the drinking water that comes out of the taps in your home. 

If there’s a problem with your sewage system, you might notice water pooling on the ground around the tank, which could indicate an overflow. Clogged and sluggish drains or foul smells coming from your plumbing are also signs that there might be a blockage in your septic system.

The Gilroy, CA homeowners’ guide to septic tank services

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