Top-Rated Septic Installation in Mehlville, MO – House Excavating LLC

Looking for reliable, affordable septic system installation in Mehlville, Missouri and the surrounding St. Louis County communities? House Excavating LLC has been the trusted local choice for residential and commercial septic services since we opened our doors. With decades of combined experience, fully licensed and insured crews, and a commitment to getting the job done right the first time, we’ve earned hundreds of 5-star reviews from your neighbors in Mehlville, Oakville, Arnold, Imperial, Fenton, and South County.

Call House Excavating LLC today at (636) 213-5003 or (573) 203-1123 for a free estimate!

Professional Septic Services in Mehlville & Surrounding Areas

• New Septic System Installation (Conventional & Alternative Systems)
• Septic Tank Replacement & Repairs
• Drain Field / Leach Field Installation & Restoration
• Excavation & Land Clearing
• Land Grading & Site Preparation
• French Drains & Surface Water Management
• Commercial Septic Systems

Why Mehlville Homeowners & Businesses Choose House Excavating LLC

Mehlville, Missouri (population ≈ 28,500) is one of South St. Louis County’s largest and fastest-growing unincorporated communities. Located just 15 minutes from downtown St. Louis along I-55 and I-270, Mehlville offers the perfect mix of suburban living with quick highway access. With thousands of homes built on large lots and many properties outside the municipal sewer district, proper septic system design and installation is critical.

At House Excavating LLC, we understand the unique Mehlville soil conditions — from the heavy clay common in the Meramec River floodplain to the rocky hills near Jefferson Barracks. Our team performs detailed percolation tests and designs systems that meet or exceed all St. Louis County Health Department regulations so your system works flawlessly for decades.

What Our Mehlville Customers Are Saying

⭐⭐⭐⭐⭐ “House Excavating replaced our 40-year-old septic tank and installed a new drain field in Mehlville last month. Professional crew, showed up on time, and left the yard cleaner than when they arrived. Highly recommend!” – Jennifer R., Mehlville, MO

⭐⭐⭐⭐⭐ “We needed emergency excavation after heavy rains flooded our basement. House Excavating installed French drains and re-graded our entire backyard in just two days. Saved our home!” – Mike T., Oakville (serving Mehlville area)

⭐⭐⭐⭐⭐ “Best price out of four quotes for a complete new septic system on our new construction home off Telegraph Road. The crew was respectful and explained everything. A+ service.” – Sarah & David L., Mehlville, MO

⭐⭐⭐⭐⭐ “Commercial septic install for our small business on Lemay Ferry. Passed county inspection the first time with zero issues. These guys know what they’re doing.” – Chris M., Owner, Mehlville strip mall

Proudly Serving Mehlville and All Surrounding South County Communities

• Mehlville
• Oakville
• Arnold
• Imperial
• Fenton
• Sunset Hills
• Affton
• Lemay
• Concord
• Sappington
• Green Park

Whether you’re building a new home in one of Mehlville’s newest subdivisions, replacing a failing septic system on an older property near Jefferson Barracks, or need commercial septic work along South Lindbergh, House Excavating LLC has the equipment, experience, and local knowledge to get the job done right.

Get Your Free Septic Installation Quote Today!

Don’t trust your property to fly-by-night contractors. Choose the local Mehlville septic experts with proven results and real customer reviews.

📞 Call or Text (636) 213-5003

📞 Alternate (573) 203-1123

🌐 Serving Mehlville, MO and all of South St. Louis County

House Excavating LLC – Licensed • Insured • Local • Trusted