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Verified Reviews for Septic Tank Service pros in Warren, IL

*The Angi rating for Septic Tank Service companies in Warren, IL 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 Warren, IL 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 November 01, 2026

Top-Rated Septic tank pros in Warren - Updated Nov 2026

Avatar for McDonagh & Sons Plumbing & Sewer Inc
McDonagh & Sons Plumbing & Sewer Inc
4.1(
69
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Warren, IL and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Great.  They were there first thing in the morning, explained everything they did and answered all of our questions.  Diagnosed the cause of the problem which another plumber could not do.  Have had no problems since.
"
Recommended by96%of homeowners
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Avatar for Choice Home Warranty
Choice Home Warranty
4.0(
5,678
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Warren, IL 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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Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Warren, IL 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."
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+2

Recommended by65%of homeowners
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Septic Tanks FAQs, answered by experts

There are many reasons you may want to extend the depth of an existing well or drill a new, deeper well on your property. A deeper well can tap cleaner water sources—shallow water may contain more contaminants. With a deeper well, you’ll also have an easier time reaching the water table depth (the level at which underground water is found) and can get past tricky soil conditions. 

Plus, if your local building code requires a minimum well depth for safety and environmental standards, you’ll meet the code by digging a deeper well in the first place.

The bacteria already present in your septic system should be enough to break down solids in a properly maintained septic tank. However, if you’re in a DIY mood, you can try adding (well-mashed) rotten tomatoes to help the good bacteria fulfill their duty. Just make sure you give them a couple hours to work after flushing them down.

Both materials are suitable for septic tanks, but concrete usually lasts longer than plastic. If you’re buying a new tank, the prices are similar for plastic ($500 to $2,500) and concrete ($700 to $2,000). However, there’s a notable difference in repair prices, with plastic tank repair costs ranging from $150 to $2,000, while concrete repairs are between $700 and $5,000.

For the most part, choosing between 30/50 psi and 40/60 psi is based on your water-pressure preference. However, it can also depend a little bit on your house—if you have older plumbing, a lower water pressure can be easier on the pipes (and a bit more gentle on your well pump). 

The lower 30/50 pressure is usually enough for a single-story home, but you may want 40/60 if you have multiple stories, as the extra pressure helps water flow smoothly up to the second floor.

The dimensions of a 500-gallon concrete septic tank can vary from manufacturer to manufacturer, but the tank is large enough to handle the wastewater of a small home with up to one bedroom. Keep in mind that some states have a minimum septic tank size, and this often starts at 750 gallons. A 500-gallon septic tank may be too small to meet local regulations.

The Warren, IL 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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