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Verified Reviews for Septic Tank Service pros in Onarga, IL

*The Angi rating for Septic Tank Service companies in Onarga, 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 Onarga, 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 June 01, 2026

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Avatar for Allied Water Services
Allied Water Services
4.9(
34
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Onarga, IL and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

With over 15 years of combined experience in the waterproofing, foundation repair, sewer, and septic industry, Allied Water Services is well-equipped to handle all your water and structural problems. Our team's extensive knowledge allows us to accurately diagnose your situation and provide a lasting solution. Our motto centers around capturing, stabilizing, and defending against the damaging effects of water. At Allied Water Services, we understand that each situation is unique to your property, and our time-tested concepts have been effective for decades. What sets us apart is our commitment to using only the highest quality products and going the extra mile to ensure complete system longevity. Our ultimate mission is to achieve complete customer satisfaction and provide comprehensive protection with long-lasting results. Whether you're a homeowner or a business owner, you can rely on Allied Water Services to defend you against water-related issues.

Septic Installation
Septic Installation
Septic Installation
Sump Pit
Drain Tile

+25

Response time1 day
13 neighbors recently requested a quote
Recommended by87%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 Onarga, 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 Onarga, IL and surrounding areas

In business since 1971

Credit card accepted

"I just pay $75 you never know who's going to come out. They do everything electrical. Just about everything is covered except the septic tank. I had an air conditioner replaced. It went great, all I had to do was pay for the freon. He didn't charge e more than what was needed."
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+2

Recommended by65%of homeowners
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Avatar for M&D Demolition & Excavating
M&D Demolition & Excavating
5.0(
1
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Onarga, IL and surrounding areas

We have have been in business since 2004. We are a family owned company and all of our workers are family. We can do landscaping, small demolition work, trenching, small excavating projects, small land cleaning, brush cutting, gravel driveway repairs, hailing things, and more! We guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today!\n

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+3

Recommended by100%of homeowners
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Plumbing Help & Co.
New to Angi
Septic System - Install or ReplaceSeptic System - Repair

Serving Onarga, IL and surrounding areas

Hi, I’m a skilled and reliable plumbing professional serving the Chicagoland area. I specialize in residential and light commercial work, including repairs, installations, and troubleshooting everyday plumbing issues.\n\nI take pride in doing the job right the first time, showing up on time, and communicating clearly so there are no surprises. Whether it’s a small fix or a bigger project, my goal is to provide quality work, fair pricing, and service you can trust.\n\nI look forward to helping you keep your plumbing running smoothly.

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Septic Tanks questions, answered by experts

There are three layers of wastewater in a septic tank: scum (solid waste that floats to the top of the wastewater), liquid (the relatively clean liquid wastewater in between the two other layers), and sludge (solid waste that falls to the bottom of the wastewater). The buildup of sludge is one of the main reasons septic tanks need to be pumped. If the tank is more than 1/3 of the way full with a combination of sludge and scum, it’s time to call a pro for pumping.

While you can drain water softener backwash into a septic tank, doing so may cause several problems. One problem is that increased sodium chloride levels from water softener backwash can kill septic tank bacteria, decreasing the effectiveness of this wastewater treatment system. Another issue is that large calcium deposits can eventually stop up the drain field and lead to poor drainage. 

The average three to four-bedroom home typically uses a well pump rated for 8 to 12 gallons per minute (GPM). To find the most accurate size for your specific needs, a common rule of thumb is to count the number of water fixtures and appliances in your home and aim for that number in GPM. This calculation allows for about one gallon of water per minute per fixture. Because estimating the correct size can be challenging, it's best to have a professional technician make the final determination. A professional can ensure your pump provides sufficient water for your home, especially during peak usage hours.

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.

Age is certainly a factor in well pump failure. The older your pump, the more likely it is to fail. 

Beyond age, other factors can cause your well pump to fail, too. Things like poor water quality can cause sediment buildup in your pump. Without proper cleaning, your pump can seize up and fail. Having a dry well for too long can also cause your pump to fail, as it keeps working even though there's no water for it to pull. 

The Onarga, 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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