Get matched with top septic tank pros in Ajo, AZ

Q: How deep should a septic drain field be?

• <div><p>The ideal depth of a septic drain field is <b>18 to 36 inches</b> below the surface. The trenches must be deep enough to allow proper wastewater distribution and filtration while remaining shallow enough for oxygen to reach the soil, promoting bacterial activity that helps break down contaminants. In areas with high groundwater or poor drainage, shallower systems like mound drain fields may be required.</p></div>

Q: How do you tell if your drain field is failing?

• <div><p>There are a few signs that indicate a failing drain field. For instance, if your septic tank starts requiring more pumping than normal, your drain field might be failing. Other signs to watch for include poor drainage after rain, standing water or sewage over the septic system, a strong septic smell outside, new and healthy grass growing over the drain field, and plumbing backups in your sinks, bathtubs, or toilets. </p></div>

Q: What is a good perc rate for a septic system?

• <div><p>Perc rates vary dramatically, and a good perc rate could be anything from 5 minutes per inch of drainage to 60 minutes per inch. The lower the number, the faster your system will drain and the more effective it will be. A 60-minute-per-inch drain rate is the highest number considered to be good, or even allowable, draining.</p></div>

Q: How deep should a trench be?

• <div><p>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.</p></div>

Q: Can I make my leach field larger?

• <div><p>You may want to increase the size of your leach field, for instance, if you add on to your home or install more bathrooms in your house. You can make your leach field larger by installing more pipes or expanding the area of the field itself. Improving the soil quality in the drain field can also make it more effective without increasing the area. </p></div>

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Verified Reviews for Septic Tank Service pros in Ajo, AZ

*The Angi rating for Septic Tank Service companies in Ajo, AZ 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 Ajo, AZ 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 March 17, 2024

Reviewed in March 2024
Seth is an awesome guy to work with. I have used Seth for many years and have always been satisfied with his work.
Always Greener LLC
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Reviewed in February 2024
They were very professional and knowledgeable. The crew cleaned up Nicely. Would recommend to all family and friends!
Tree Pro's, LLC
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Reviewed in November 2022
He did a great work, he was very efficient. Other contractors were not able to find the problem and he was. I have mini splits.
Arctic Breeze Cooling & Heating, LLC
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Reviewed in June 2022
Very helpful service that gave me the necessary information to make important decisions. Excellent recommendations for improving my property and selling it.
Inspect NW
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Reviewed in July 2021
They did excellent work. The crew was very professional. I would definitely recommend them.
Hardrives, LLC
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Reviewed in April 2021
Went above and beyond. Would not leave until my AC system was running at optimum level
Alltech Solutions, Inc.
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Find Septic tank pros in Ajo

Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Ajo, AZ and surrounding areas

In business since 2008

Emergency services offered

Credit card accepted

"Well. Only problem was delay in response time after claim was filed online. Water tank started leaking Thanksgiving morning and no reply until I called the Regional Manager."

Recommended by81%of homeowners

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American Home Shield – Home Warranty

3.5(

5,688

)

Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Ajo, AZ and surrounding areas

In business since 1971

Credit card accepted

"Takes for ever to get a return a call. Also took a week to get someone out for repairs. They said they would reimburse me for septic repairs and it took over 3 months for that to happen."

Recommended by65%of homeowners

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Tucson Septic Systems, LLC

4.0(

)

Septic System - Install or ReplaceSeptic System - RepairSeptic System - Repair - For Business+2 more

Serving Ajo, AZ and surrounding areas

In business since 1998

Free estimates

Emergency services offered

Hi. My name is David Goodwin, I am the owner of Tucson Septic Systems. LLC. While our name is Tucson Septic, we work not only in Pima County, but Maricopa County as well.\nI have been installing and replacing septic systems since 1996 and began my own business in 1998. Since that time I have installed nearly 500 septic systems, with no complaints. I strive to earn your business by handling all the details of your project and offering you a competitive price on your septic installation, repair, pumping, and Septic Certification. As a family owned business -- your business helps to keep us operating during these tough economic times, and I am very aware that you have a choice in who you work with. I hope you will consider working with us on your next project!\n

Recommended by100%of homeowners

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Arizona sewer and septic

New to Angi

Septic System - Install or ReplaceSeptic System - Repair

Serving Ajo, AZ and surrounding areas

AZ Sewer & Septics is a family-owned and operated company run by Arizona locals, specializing in excavation, septic, sewer, and drain services. ROC licensed and bonded, NAWT certified, and offering same-day services, AZ Sewer & Septics serves homeowners across the greater Phoenix area and surrounding communities.

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Posse plumbing

New to Angi

Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Ajo, AZ and surrounding areas

Free estimates

Emergency services offered

Warranties offered

We specialize in waterhater installations and maintenance and all fixture replacement and repair spanning from toilets to faucets you name it we will replace it

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Ganz Legacy Plumbing LLC

New to Angi

Septic System - Install or ReplaceSeptic System - Repair

Serving Ajo, AZ and surrounding areas

Free estimates

Emergency services offered

Warranties offered

I am a 4th generation plumber. I take great pride in all work that I do. I also provide free estimates for all your plumbing needs

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Septic Tanks questions, answered by experts

The ideal depth of a septic drain field is 18 to 36 inches below the surface. The trenches must be deep enough to allow proper wastewater distribution and filtration while remaining shallow enough for oxygen to reach the soil, promoting bacterial activity that helps break down contaminants. In areas with high groundwater or poor drainage, shallower systems like mound drain fields may be required.

There are a few signs that indicate a failing drain field. For instance, if your septic tank starts requiring more pumping than normal, your drain field might be failing. Other signs to watch for include poor drainage after rain, standing water or sewage over the septic system, a strong septic smell outside, new and healthy grass growing over the drain field, and plumbing backups in your sinks, bathtubs, or toilets.

Perc rates vary dramatically, and a good perc rate could be anything from 5 minutes per inch of drainage to 60 minutes per inch. The lower the number, the faster your system will drain and the more effective it will be. A 60-minute-per-inch drain rate is the highest number considered to be good, or even allowable, draining.

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.

You may want to increase the size of your leach field, for instance, if you add on to your home or install more bathrooms in your house. You can make your leach field larger by installing more pipes or expanding the area of the field itself. Improving the soil quality in the drain field can also make it more effective without increasing the area.

The Ajo, AZ 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

Taylor Freitas
•
Mar 18, 2026Mar 18, 2026
How Much Does Septic Tank Repair Cost? [2026 Data]
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How Much Does It Cost to Locate a Septic Tank? [2026 Data]
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Crank Up Your Understanding of Septic Tank Volume
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What’s the Right Septic Tank Size for Me?
Septic tank sizes vary depending on the size of your home, how many people live there, how much water you use, and more. Read on to learn how to determine the right size for you.
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•
Jul 9, 2026Jul 9, 2026
Are Septic Tanks Bad? Pros and Cons to Consider Before Moving Into a House With a Septic System
If you’ve never lived in a house with a septic system before, you might be wondering: Are septic tanks bad? Here are some of the pros and cons.
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•
Jul 9, 2026Jul 9, 2026
How to Build a Small Septic Tank for a Rural Property
Want to learn how to build a septic tank for your rural or off-grid property? First, check your local laws, then dive into these general guidelines.