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TRUSTED BY O FALLON, IL HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon11
    Verified septic tank services reviews

Top-Rated Septic tank pros in O Fallon - Updated Nov 2026

Rooter-Man Plumbers
3.9(
14
)
Septic System - Install or Replace - For BusinessSeptic System - RepairSeptic System - Repair - For Business+2 more

Serving O Fallon, IL and surrounding areas

In business since 1996

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Response time1 day
Recommended by92%of homeowners
Avatar for Spengler Plumbing, Heating and Cooling
Spengler Plumbing, Heating and Cooling
3.8(
75
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving O Fallon, IL and surrounding areas

In business since 1971

Emergency services offered

Credit card accepted

"Sunday night tenant calls sewer backing up in her bathtub
made several calls no answer 4th call spengler plumbing answered (dispatcher) referred me to service man
Serviceman called back I explain the circumstance's to him he states he needs 125.00$ to come to house
I gave him my credit card he charges the 125,00$ then proceeds with a sales pitch about how much cheaper a monthly fee for
their service would be, I declined.
Serviceman arrives looks over situation calls me back states it will be 701.00 to clear sewer line that has a outside house access
Tenants can not use toliets or showers serviceman is aware of the situation I am in and I tell him to proceed 
His total labor time was about an hour
will never use them again
"
Recommended by68%of homeowners
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 O Fallon, IL and surrounding areas

In business since 1971

Credit card accepted

"The technician emptied the freezer, which was in the basement, to work on the part that needed repair. Then he neglected to put anything back into the freezer, including a turkey I had bought for Christmas and a rack of ribs. Two days after he left, I went out of town for two weeks. The turkey actually exploded and spewed its liquid all over everything, which had to be discarded. I let AHS know and they couldn't even bother to call me or follow up on this. I'm considering not renewing my contract with them because of the quality (or lack thereof) of many of the providers they send."
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+2

Recommended by65%of homeowners
Avatar for Reed's 24 Hr Plumbing & Drain LLC
Reed's 24 Hr Plumbing & Drain LLC
2.8(
5
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving O Fallon, IL and surrounding areas

In business since 2005

Emergency services offered

Credit card accepted

"when I got home from work I smelled a strong odor of gas. I called Reeds 24hr Plumbing & Drain and the lady that I spoke with on the phone said she would get a technician to call me back immediately. within minutes I was contacted and the gentleman told me what to do to get the gas shut off till he arrived. I was really surprised that he said he was in the area and would be here with-in 1hr or less. He showed up in less then 30 min. He was very nice and located the leak very quickly. I was given a price before he did any work and he told me  exactly what the problem was and what he was going to do to fix it.. It took him a little less then an hour and was clean, courteous and  friendly. As he was going over the bill he asked me if I ever served in the military? I not only was pleased with this technician  but I was given a 10% discount for serving our country. Thank you Reeds plumbing for doing a great job and your prices were reasonable and to me even seemed very low. I will use your company again and recommend you to my friends and family!"
Recommended by66%of homeowners
Septic Tanks FAQs, answered by experts

Common signs that your well pump is failing include fluctuating or consistently poor water pressure, sputtering water from faucets, or a complete loss of water. Other indicators are unusual noises coming from the pump, the pump running continuously, dirty or cloudy water, or a sudden, unexplained spike in your utility bills. While some issues, especially after a power outage, might be resolved by simply restarting the power or priming the pump, persistent problems suggest a more serious issue. If you notice any of these red flags, it is recommended to call a professional well pump service to inspect the system and determine whether it needs to be repaired or replaced.

A septic tank always has some amount of liquid in it—which should usually be 8 to 12 inches from the top of the tank. If the liquid level is higher than that or is overflowing the drainage pipe that leads out to the leach field, the tank may be too full and in need of pumping.

They can if they’re not installed correctly or if the caps or covers were dislodged by a lawn mower or other yard equipment. This is why it pays to hire a reputable septic tank company that’s experienced in septic tank installation and maintenance. You should also check caps and covers often to see that they’re in place and take measures to tighten or secure them, provided it is safe to do so.

Consider site conditions, soil type, required capacity, and system designs compatible with environmental protection regulations.

The price you’ll pay for service from a septic tank company will depend on the specific service you need. Here are some common services, along with average pricing:

  • Anaerobic septic system installation: $3,000–$8,000

  • Aerobic septic system installation: $10,000–$20,000

  • Septic tank pumping: $250–$550

  • Percolation test: $700–$2,000

  • Leach field installation: $2,000–$10,000

These numbers vary based on your septic system size, property layout, and more, so the best way to get an accurate estimate is to contact a septic tank professional for a custom quote.

The O Fallon, IL homeowners’ guide to septic tank services

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