Fast & Reliable Septic System Repair in Boulder, CO

Sullivan Septic & Excavating provides trusted septic system repair in Boulder, CO, with fast response times and expert care. If you're dealing with backups, foul odors, or soggy yards, your septic system may be in trouble. Don’t wait, call (303) 772-4019 for professional help before small issues become costly repairs.
A large hose extending into an open, circular sewer access point in a yard.

Professional Septic System Repair in Boulder, CO That Solves the Real Problem

When your septic system starts acting up, it's more than an inconvenience, it’s a health hazard. Strange smells, slow drains, or sewage backups can quickly disrupt your home or business. The longer you wait, the worse (and more expensive) it gets.


At Sullivan Septic & Excavating, we don’t just treat the symptoms, we fix the root problem. With years of hands-on experience, our team brings solutions that last.

List of Septic System Services in Boulder, CO

Here’s how we help restore your system’s health:


  1. Tank Repairs & Replacements
    Cracks, leaks, or rust? We repair or replace tanks to prevent soil and groundwater contamination.
  2. Drain Field Repair
    A failing drain field can lead to standing water and slow drains. We assess and restore field function fast.
  3. Pipe & Line Repair
    Broken or blocked lines disrupt the entire system. We identify damage with precision and repair it with care.
  4. Emergency Septic System Service
    Don’t wait until Monday. We offer rapid emergency response in Boulder, CO, when things go wrong.
  5. Septic System Maintenance in Boulder, CO
    Regular maintenance helps prevent breakdowns. Ask about our service plans to keep things flowing.

Benefits of Choosing Sullivan Septic & Excavating

At Sullivan Septic & Excavating, based in Boulder, CO, we pride ourselves on delivering top-notch septic system service tailored to meet your needs. Our experienced team ensures reliable, efficient, and affordable solutions to keep your septic system functioning smoothly. By choosing us, you benefit from timely maintenance, expert repairs, and thorough inspections that prevent costly problems down the road. With our commitment to quality and customer satisfaction, you can trust Sullivan Septic & Excavating to protect your property and the environment.

Ready to experience the best septic system service in Boulder, CO? Contact Sullivan Septic & Excavating today for a free consultation and keep your septic system in perfect condition!

Why Prompt Septic System Repair in Boulder, CO, Matters for Your Property

Sullivan Septic & Excavating delivers licensed septic system repair in Boulder, CO, for homeowners across Boulder County and the surrounding communities. When a system fails, timely action can mean the difference between a minor fix and a full replacement.

Septic tank cleaning and pumping service in an underground tank.

Boulder's clay-heavy soils and variable seasonal conditions can accelerate wear on drain fields and tank components, making local expertise especially valuable. Choosing a team familiar with Boulder County Public Health requirements and the SepticSmart program may help streamline any permitting or disclosure obligations connected to your repair.



Signs that may indicate you need septic system repair include:

  • Gurgling sounds coming from drains or toilets inside the home.
  • Wet patches or unusually green grass forming over the drain field.
  • Persistent sewage odors near the tank or leach field area.
  • Multiple slow drains occurring throughout the property at once.
  • Sewage backing up into sinks, showers, or toilets.


Sullivan Septic & Excavating provides reliable septic system service to Boulder, CO, residents with over 30 years of hands-on experience. Call (303) 772-4019 to schedule a repair assessment with a licensed technician. For details on related work, visit the septic system repairs and installation page or review septic tank cleaning and pumping services.

What Happens During a Septic System Repair in Boulder, CO?


A professional repair typically begins with a diagnostic assessment. The technician evaluates tank condition, inspects inlet and outlet baffles, checks distribution lines, and tests leach field performance before any work begins.



Depending on findings, repairs may involve component replacement, drain field rehabilitation, or tank structural work. Sullivan Septic & Excavating can also coordinate any required Boulder County permits as part of the process, helping keep the project on track from start to finish.

  • How Often Should a Septic System Be Inspected in Boulder?

    Most septic professionals recommend a full inspection every two to four years, though frequency may vary based on household size and system age. Regular inspections can catch developing issues before they require major system repair in Boulder, CO.

  • Can Tree Roots Damage a Septic System?

    Yes, root infiltration is a common cause of line blockages and pipe damage. Sullivan Septic & Excavating can use sewer camera scoping to locate root intrusion and recommend the most appropriate repair approach for your property.

  • Does Boulder County Require a Septic Inspection Before Selling a Home?

    Boulder County's SepticSmart program requires a septic inspection on every property transfer. Any identified issues may need to be resolved within one year of the closing date, depending on the terms agreed upon in the real estate contract.

  • What Is the Difference Between a Repair and a Full Replacement?

    A repair typically addresses isolated component failures such as a cracked baffle, broken distribution line, or clogged drain field section. A full replacement may be recommended when the tank or leach field has sustained damage beyond what targeted repairs can correct.

  • Is Septic System Service in Boulder, CO, Available for Commercial Properties?

    Yes. Sullivan Septic & Excavating offers commercial septic system service for businesses across Boulder, CO, and the wider Boulder County area, including routine pumping, maintenance, and emergency response. Visit the residential services page to learn more about available service options.

Call for Septic System Repair in Boulder, CO Today!

Don’t ignore septic problems, call Sullivan Septic & Excavating now at (303) 772-4019 for expert septic system repair in Boulder, CO. Contact us to get your system back on track fast.