Licensed & Insured

Below the Surface. Above the Standard.

Expert sewer, water & excavation services built on integrity, precision, and decades of underground experience.

Get a Free Estimate → 📞 (815) 266-9788
24/7
Emergency Service
100%
Satisfaction Guaranteed
0%
Financing Available
What We Do

Our Services

From residential repairs to large-scale commercial excavation, Maximum Underground handles every job with the same commitment to quality.

Worker repairing sewer line in deep trench
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Sewer Line Repair & Replacement

Complete sewer line diagnostics, repair, and full replacement services. We use the latest techniques to minimize disruption and maximize longevity.

Water service line connection with blue poly pipe
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Water Line Install & Repair

Professional water line installation and emergency repair services. From new construction to aging pipe replacement — we keep your water flowing.

Excavator installing large pipe in gravel bed
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Excavation

Site excavation for foundations, pools, and utilities. Our experienced operators and modern equipment get the job done safely and on schedule.

CAT excavator at curbside with open trench
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Trenching

Precision trenching for utility installation, drainage systems, and underground conduit. Efficient, clean, and code-compliant work every time.

Mini excavator and crew performing road cut excavation
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Underground Utilities

Full underground utility installation including storm drains, sanitary sewers, gas lines, and telecommunications conduit for residential and commercial projects.

CAT skid steer with MAXIMUM branding grading at construction site
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Site Work

Comprehensive site preparation including grading, backfill, compaction, and drainage solutions. We build the foundation everything else rests on.

Maximum Underground CAT 259D skid steer grading at new construction site
About Us

Built on Grit.
Driven by Results.

Maximum Underground was founded by Colin Friel with a simple belief: the work that happens below the surface should never be below standard. Every trench we dig, every pipe we lay, and every project we complete reflects our commitment to doing things right the first time.

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Licensed & Insured

Fully compliant, fully covered

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Experienced Crew

Skilled operators & technicians

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Modern Equipment

The right tools for every job

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On-Time Delivery

We hit deadlines, period

How It Works

Simple Process. Serious Results.

We make underground work straightforward. Here's how every project starts and finishes — on time and on budget.

01

Free Consultation

Call us or fill out our form. We'll discuss your project and schedule a site visit.

02

Site Assessment

Our team evaluates the site, identifies challenges, and develops a detailed plan.

03

Transparent Quote

You get a clear, honest estimate — no hidden fees, no surprises.

04

Expert Execution

We get to work, keep you updated, and deliver results that last.

"When it comes to underground work, there's no cutting corners. We do it right the first time — every trench, every pipe, every job."
— Maximum Underground
Get In Touch

Ready to Start
Your Project?

Whether it's an emergency repair or a new construction project, we're here to help. Reach out today for a free estimate.

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Phone

(815) 266-9788

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Email

maximumsewer@gmail.com

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Service Area

Chicagoland Area

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Hours

Mon–Fri: 7AM–6PM | Emergency: 24/7

Request a Free Estimate

Fill out the form below and we'll get back to you within 24 hours.

Let's Get Started

Your Underground Expert
Is One Call Away

Don't wait until a small problem becomes a big one. Contact Maximum Underground today for a free, no-obligation estimate on your project.

📞 Call (815) 266-9788 Request Estimate