Hours: Mon-Fri : 7:00 am – 5:00 pm
Email: info@coalcreekseptic.com
Phone: (309) 396-8191

Trusted Septic Installation Services for Central Illinois Homes

We install the best septic systems across Central Illinois – and the best compliment we get is: “We never have to think about it.”
Whether you’re building a new or replacing a failing system, our family-owned team handles every detail. Because the system we install today will still be running smoothly 30 years from now.

Call Us: (309) 396-8191

What We Handle For You

Every property is different, so we don’t install cookie-cutter systems. Yours will be custom-designed based on your household size, water usage, and soil conditions.

Initial Site Assessment

Thorough soil analysis and property evaluation to design the perfect system for your needs.

Custom System Design

We engineer a solution that fits your property and usage patterns, built to last decades.

Permit Management

Complete handling of all paperwork, permits, and coordination with local authorities.

Professional Installation

Expert installation by our veteran-owned team, with meticulous attention to detail.

Quality Verification

Final camera inspection and testing to ensure everything works perfectly.

Get a Free Quote

Why Trust Us With Your Septic Tank Installation

Every Dollar Explained

We break down all costs before we start – from permits to parts. You’ll know exactly what you’re paying and why.

We Handle Permits For You.

Don’t waste time dealing with county paperwork. We manage every permit and inspection, keeping your project legal and on schedule.

Built to Last Decades

Our septic systems last because we don’t cut corners. That’s why we back every installation with Central Illinois’ most comprehensive warranty.
Get a Free Quote
Excavator lowers a septic tank

From Our Customers:

“Needed a full system replacement. They showed us exactly why, gave us clear pricing, and finished the job ahead of schedule. True professionals.”

Deborah L., Homeowner



“Coal Creek handled everything for our new construction. From permits to final testing, they kept us informed and got it done right. Couldn’t be happier with the results.”

Dwight R., New Homeowner



“As a contractor, I appreciate how they coordinate with my schedule and handle all the septic details. Makes my job easier.”

 James K., Local Builder



Logo of Coal Creek Septic featuring bold green and black colors with stylized text.

Warning Signs That You Need
A New Septic System

Frequent backups, slow drains, and standing water in your yard aren’t just small issues – they’re signs that your septic system is on its last legs and needs replacing.

Constant Backups

If your toilets and drains keep backing up even after pumping, your system might be failing.

Money Pit

When repair costs keep adding up and problems come back, replacement is often cheaper long-term.

Age Problems

Most systems last 25-30 years. If yours is older and giving you trouble, it’s probably time for an upgrade.

Drain Field Issues

Soggy spots in your yard that don’t go away after pumping often mean your drain field has failed.

Failed Inspection

If your system fails inspection or doesn’t meet current codes, replacement might be your best option.

Flooding Problems

When sewage backs up into your home or pools in your yard, you likely need more than just repairs.
Get a Free Quote
Septic tank sits in a deep, grassy trench

Protect Your Property Value

A properly installed septic system does more than just work reliably – it adds real value to your property. We provide complete documentation for future home sales and ensure your system meets or exceeds all county codes. With proper maintenance, expect 25-30 years from a standard system, or 30-40 years from advanced ones.

Get a Free Quote

Frequently Asked Questions

How do I know if I need a standard or advanced system?
We’ll test your soil and check county requirements. You’ll know exactly what system you need and why – before making any decisions.
Will your work ruin my yard?
We protect your landscaping during installation and restore everything when we’re done. Most customers can’t even tell where we worked after the grass grows back.
How long will the system last?
With proper maintenance, expect 25-30 years from a standard system, 30-40 from advanced ones. We’ll show you exactly how to care for yours.
Can you replace my old septic system?
Yes. If your system is failing or outdated, we’ll remove the old tank and install a new one that meets today’s standards. We’ll also inspect your drain field to see if it needs updates.
"Do I need to be home during installation?"
Not necessarily. We’ll handle the entire process and keep you updated along the way. If we need anything from you (like access to certain areas), we’ll let you know in advance.
Logo of Coal Creek Septic featuring bold green and black colors with stylized text.

Is Your Septic System Showing Signs Of Fatigue?

Book a camera inspection first. Sometimes what feels like a failing system just needs repair. We’ll show you exactly what’s happening underground before recommending a replacement.
Get a Free Quote