- Chicago Southwest Suburbs
Demmis Plumbing
Locally Owned & Operated
Professional Plumbing Services
Available 24 hours a day, 7 days a week
Our Services
Why Choose Us?
Emergency Service
When you’re facing an emergency, you want a fast, professional plumber and nobody does it better or gets there faster than Demming Plumbing.
Family owned
As a family-owned business, we treat our customers like family, providing personalized service and building lasting relationships.
Available 24/7
Because plumbing problems can strike when you least expect them, our friendly and knowledgeable Demmis Plumbing team works around the clock.
Our Reputation
Demmis Plumbing offers unmatched plumbing in your area, backed by a 17+ year reputation for quality.
Testimonials
EXCELLENT Based on 162 reviews Posted on elly claryTrustindex verifies that the original source of the review is Google. Demmis plumbing did a great job fixing a sewage backup problem. He came on a very short notice on a Saturday. Thanks again for your help!!!!Posted on Brian MiskellTrustindex verifies that the original source of the review is Google. On December 2, 2025, we had a sewer backup in the basement. Demmis Plumbing was called and they sent Alex. He was there in probably 30 minutes. Spent a few hours unclogging 2 drains and did an excellent job. For the amount of work Alex had to do, the price was very reasonable. Alex was very nice and friendly. I hope to never have to call a plumber again, but when I do, it will definitely be Demmis Plumbing.Posted on M STrustindex verifies that the original source of the review is Google. We had a great experience with Alex who relocated our gas valve. He was very knowledgeable, professional and personable. Their service was reasonably priced. We would highly recommend Demmis Plumbing.Posted on Mansour MTrustindex verifies that the original source of the review is Google. Alex is a true hero! We were battling a nasty gnat infestation coming straight from the sewer drain—disgusting and stressful. He showed up fast, took one look, and immediately pinpointed the problem: a broken seal letting sewer gas and gnats escape. He was completely honest. No unnecessary work, no inflated quotes. Just a quick, affordable fix: replaced the seal, tested everything, and the gnats were gone for good. Done perfectly in under an hour, with zero mess. Professional, knowledgeable, and fairly priced—Alex saved the day! He’s now our family’s trusted plumber.Posted on Mary TrendleTrustindex verifies that the original source of the review is Google. I am so pleased with the work that Demmis Plumbing did on my plumbing issues. I had a little stream of water in the bathtub pipes. At the same time I had a clogged drain. The water just was not going down - actually just going down very slowly. With a phone call they fixed both issues the next day. I believe it is family owned and operated. They are very experienced and knowledgeable. They give honest opinions about the issues. They do not try to hustle you into an expensive job. The prices were very reasonable. I only regret waiting so long to get this job done.Posted on Edie McFarlandTrustindex verifies that the original source of the review is Google. Had a bathroom faucet installed today. What a great guy Dan is! Professional, friendly and very knowledgeable. I'll definately be using Demmis plumbing Co. from now on for our plumbing needs. I'll also be passing their contact information on to others. Very affordable and professional.Posted on Korey BollnowTrustindex verifies that the original source of the review is Google. Alex was great. Prompt, kept advised of situation and he turned a nightmare into an easy repair. He was patient and answered all questions. Highly recommend!!!Posted on Kathy LynchTrustindex verifies that the original source of the review is Google. Same day service, tech’s were awesome! Repaired two toilet issues - in and out 20 min. Excellent work, excellent service.Posted on Julian ShahTrustindex verifies that the original source of the review is Google. Demmis plumbing was very good!…Alex was good at finding a resolution to the problem we were experiencing…I would use them again in the future.
Frequently Asked Questions
What services does your company provide?
- Drain cleaning
- Leak detection and repair
- Water heater installation and repair
- Fixture installation and repair (faucets, toilets, etc.)
- Sewer line repair and replacement
- Emergency plumbing services
What areas do you serve?
We are based in Lemont, IL, and proudly serve the surrounding neighborhoods, including:
We are always expanding our service area! If you are located outside of these areas, please contact us directly to see if we can accommodate your plumbing needs.
What are your hours of operation?
Our regular business hours are:
- Monday: 7 AM – 9 PM
- Tuesday: 7 AM – 9 PM
- Wednesday: 9 AM – 9 PM
- Thursday: 7 AM – 9 PM
- Friday: 7 AM – 9 PM
- Saturday: 8:30 AM – 9 PM
- Sunday: 9 AM – 6 PM
We offer 24/7 rapid response for plumbing emergencies.
How do I schedule an appointment?
You have several convenient options to schedule your plumbing appointment:
Call us:
Send us an email:
Or fill out our online form here.
For plumbing emergencies, please call us directly for the fastest response.
What forms of payment do you accept?
We offer flexible payment options for your convenience:
- Cash
- Check
- Zelle, Venmo
- All major credit and debit cards
* Please note there is a 3% processing fee for card payments
What should I do in a plumbing emergency?
Plumbing emergencies can be stressful, but taking quick action can help minimize damage. Here’s what to do:
- Shut off the water main: This is the most important step to prevent further flooding. If you don’t know where your water main is located, contact us immediately for assistance.
- Call us immediately: Provide your contact information and a brief description of the emergency.
- Evacuate if there’s a gas leak: If you smell gas, leave the building immediately and call the gas company from a safe location. Do not use any appliances or light switches.
- Plumbing emergencies include: Burst pipes. Major flooding, Gas leaks, No water to the entire house.
Remember, we are here to help 24/7 in case of plumbing emergencies!
Can’t find the answer you’re looking for? Contact us.
Your Trusted Local Plumber
Plumbing Services Available 24/7
For any plumbing needs or emergencies, don’t hesitate to contact Demmis Plumbing.
Our team of experienced professionals is ready to assist you promptly and efficiently. Whether it’s a leaky faucet, clogged drain, or a burst pipe, we’ve got you covered.
We’re here to ensure your home’s plumbing system functions optimally, giving you peace of mind and a comfortable living environment.
Demmis Plumbing is pleased to offer our services to Chicago Southwest Suburbs residents in the following areas and beyond: Lemont, Homer Glen, Naperville, Downers Grove, La Grange, Palos Park, Darien, Palos Heights, Orland Park.