Serving Arnold, Festus, Desoto, Barnhart, Fenton, Imperial, Hillsboro, & Surrounding Areas

Bob Mahoney Plumbing & Excavating

professional Services You Can Trust

At Bob Mahoney Plumbing and Excavating, we proudly deliver dependable, high-quality plumbing and excavation solutions for homeowners and businesses throughout Missouri. From routine sewer drain cleaning and plumbing repairs to full septic system installations and excavation projects, our licensed and experienced team is equipped to handle jobs of any size. Based in Arnold, MO, and serving Fenton, Festus, Desoto, Barnhart, Imperial, Hillsboro, and surrounding areas, we are committed to providing prompt service, honest communication, and long-lasting results.

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Sewer Drain Cleaning

Clogged or slow drains can disrupt your day and lead to costly damage. Our professional sewer drain cleaning services quickly clear blockages and restore proper flow, helping protect your plumbing system and prevent future issues.

Plumbing Services

From repairs and replacements to full plumbing installations, our skilled team handles all your residential and commercial plumbing needs with precision and care. We ensure every project is completed safely, efficiently, and up to code.

Septic Systems

We specialize in septic system design, installation, inspections, and maintenance. Whether you’re building new or upgrading an existing system, we provide dependable solutions that ensure long-term performance and compliance with local regulations.

Excavating Services

Our expert excavation team prepares sites for new construction, septic installations, and land development projects. Using professional-grade equipment and proven techniques, we deliver safe, accurate, and efficient excavation services.

Get Reliable Service You Can Count On

Whether you need immediate plumbing repairs or are planning a large excavation project, Bob Mahoney Plumbing and Excavating is ready to help. Contact us today to schedule your service or request a consultation.

Why Choose Bob Mahoney Plumbing and Excavating?

Licensed & Experienced Professionals
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Our team brings the knowledge, training, and hands-on experience needed to complete every job correctly the first time.


Comprehensive Solutions
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From sewer cleaning and plumbing repairs to septic systems and excavation, we provide complete services under one trusted name.


Reliable & Prompt Service
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We understand the importance of fast, dependable service. Our team responds quickly and works efficiently to minimize disruption.


Serving Missouri Communities
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Proudly based in Fenton, MO, we serve Arnold, Festus, Desoto, Barnhart, Imperial, Hillsboro, and surrounding areas with honest, community-focused service.


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Learn More About uS

Bob Mahoney Plumbing and Excavating is built on a commitment to quality workmanship and customer satisfaction. We work closely with each client to understand their needs and deliver tailored solutions that stand the test of time. Whether it’s a small plumbing repair or a large-scale excavation project, we approach every job with professionalism, integrity, and attention to detail.

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Ready to Get Started?

Trust Bob Mahoney Plumbing and Excavating for dependable plumbing, septic, and excavation services. Call today or request a quote online — we’re here to help with your next project, big or small.

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