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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

"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
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

Septic tank lids may or may not be buried in a yard. Most lids are buried at least 4 inches deep unless you have an aerobic septic system. Aerobic septic systems need frequent cleanings, about every four months, so it’s best to leave these lids aboveground for easier access. For buried lids, homeowners can use risers that make it easier to locate and access a buried septic tank lid.

Ideally, you should conduct a mechanical inspection and a bacterial or well water inspection yearly. While you might be able to push it off to every other year, it’s best to have peace of mind, especially when it comes to something that you use so frequently. 

If you experience repeated gastrointestinal illness in the household, it's important to test the well water more regularly for quality and cleanliness to check for bacteria.

If your leach field becomes clogged or saturated, it can cause several problems with your home's septic system. The clog can cause sewage to back up into your home, leading to unpleasant odors and mess. A backed-up septic system can be a health hazard, particularly if the sewage starts to leach into the ground surrounding the leach field.

There are several ways to fix a saturated drain field, including cleaning out your septic tank, adding enzymes and additives to your drain system, and installing a larger septic system.

The size of your septic tank plays a role in determining the proper size of the drain or leach field. As a general rule, you should have 1 square foot of drain field size per gallon of septic tank capacity. However, you could install a leach field that’s as much as 2.5 square feet per gallon of septic tank capacity. Most professionals determine the right septic tank size and drain field size by the number of bedrooms in the house. A three-bedroom house needs a minimum 1,000-gallon septic tank, for example.

Wells typically replenish at a rate of about five gallons per minute, but several variables can influence how quickly they refill. A deep well will take more time to replenish than a shallow one. The replenishment rate can be slowed by issues such as leaks, damage, a faulty well pump, or a clogged well screen. Other factors, such as the surrounding geology, regular precipitation, and proper maintenance, also affect the recovery rate.

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.