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Top-Rated Septic tank pros in Avon - 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 Avon, IL and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"I walked into my basement on Saturday afternoon to discover a pool of water on the floor.  Looking at the walls I traced it back to right above the window that sits below my kitchen sink.  I popped the paneling off the top of the window box and immediately saw that the galvanized pipe leading from the sink drain to the stack had corroded and a hole had formed.  Frantic because it was 4pm on a Saturday and I knew I couldn't use my kitchen sink or dishwasher until I got this fixed (no easy task with two toddlers to keep up with), I jumped onto Angie's List looking for a plumber with Saturday hours and a good rating. 
I called McDonagh and was told they could have someone at my place in an hour.  Todd showed up at 5:30 and immediately got to work.  Patrick (the owner) showed up with his son Nolan shortly thereafter to take a look and get Todd some parts off of his truck.  We gave Nolan a piece of the pizza my kids were having for dinner as an apology for interrupting his Saturday too.  Patrick came back with a price estimate that seemed fair to me for emergency short-notice service on a Saturday night.  Todd replaced the entire section of pipe from the sink drain to the stack and was finished and out the door by 7:30, leaving us with a fully functional kitchen again. 
Huge thanks to Patrick and Todd (and Nolan) who really saved the day for us.  These guys are absolute professionals and really saved us from some major inconvenience.  Would absolutely recommend and use them again.
"
Recommended by96%of homeowners
JONES SEPTIC SERVICE - Home Facebook
New to Angi
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic Tank - Clean or Pump Out+1 more

Serving Avon, IL and surrounding areas

In business since 1985

Free estimates

Credit card accepted

We offer only the best in quality workmanship and professional courtesy. We specialize in all phases of commercial and residential landscaping. We are committed quality work and outstanding results & are strongly involved in local community activities. We look forward to working with you! \n \n

Septic Tanks FAQs, answered by experts

You can cover a septic tank riser with dirt, but it’s not always the best idea. If you have a plastic riser and you bury it, you can easily lose track of it since you won’t be able to find it with a metal detector. Make sure to clearly note where your rise is in your yard so that you’re able to access it easily the next time you or a septic pro needs it. Don’t bury the cover too deep or you could place too much stress on it and make it too difficult to access in the future.

Several signs can indicate a faulty well pump pressure switch. These include your pump running continuously, the pump not turning on at all, or a sudden and complete loss of water. Other symptoms are weak water pressure or an erratic, unpredictable water flow from your fixtures. If you notice these issues, the pressure switch may be the cause. Testing the switch can help diagnose the problem. A faulty switch will likely need to be repaired or replaced. If the issue is more complex, it's best to consult a professional well technician to ensure your water supply is restored correctly.

If your well pump is running continuously (meaning without turning off or stopping), it's a sign that your well pump is starting to break down. The length of time your well pump should cycle is dependent on many factors, like the tank size, pressure setting, and even the amount of water in your well. Generally, your well pump should cycle, or go from running to not running every few minutes.

All municipalities in the U.S. require a permit for septic tank installation or septic system alteration, and the permit will usually cost between $450 and $2,500. Some municipalities also require permits for septic system repair. You’ll either need to contact your local building department or your septic tank company to ask if this is necessary before carrying out the work. Permits are not typically required to have your septic tank pumped, so provided your septic company is licensed, you can move forward with the work as needed.

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

The Avon, IL homeowners’ guide to septic tank services

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