Expert Septic Installation in Black Walnut, MO 63301 – House Excavating LLC

Looking for reliable, licensed septic system installation in Black Walnut, Missouri and the surrounding St. Charles County area? 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 in septic installation, drain field design, excavation, land grading, and French drain systems, we deliver long-lasting solutions that meet or exceed Missouri health department standards.

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

Why Black Walnut Homeowners & Businesses Choose House Excavating LLC

Black Walnut, MO (ZIP 63301) is a beautiful, fast-growing unincorporated community in western St. Charles County with a population of just over 3,200 residents. Nestled along the Mississippi River bluffs and surrounded by rolling farmland and new subdivisions, the area continues to attract families and businesses who love the rural feel of country living with quick access to St. Louis (only 30–35 minutes away). Because most properties here are outside city sewer limits, a properly designed and installed septic system is absolutely critical.

At House Excavating LLC, we understand the unique soil conditions in Black Walnut — from heavy clay to rocky limestone — and we custom-design every septic system and drain field to perform perfectly for decades.

Our Septic & Excavation Services in Black Walnut & Surrounding Areas

• New Septic System Installation (Conventional, Chamber, Mound, and Advanced Treatment Systems)
• Septic Tank Replacement & Repairs
• Drain Field / Leach Field Installation & Restoration
• Land Clearing & Grading
• French Drains & Surface Water Management
• Commercial Septic Systems
• Perc Tests & Soil Evaluations
• Excavation for Home Additions, Pools, Driveways & More

We proudly serve Black Walnut 63301 and all nearby communities including St. Peters, O’Fallon, Wentzville, Lake St. Louis, Cottleville, Weldon Spring, Dardenne Prairie, and New Melle.

What Our Black Walnut Customers Are Saying

⭐⭐⭐⭐⭐ “House Excavating installed a new septic system and drain field for our new home build in Black Walnut last fall. They handled everything from the perc test to final inspection. Professional crew, showed up on time, and left the yard cleaner than when they started. Highly recommend!” — Mike & Sarah T., Black Walnut, MO

⭐⭐⭐⭐⭐ “We had major drainage issues after heavy rains flooded our basement twice. House Excavating designed and installed French drains around the entire house and re-graded the yard. Problem solved — even after the big storms this spring, everything stays perfectly dry. Worth every penny.” — David R., Black Walnut, MO 63301

⭐⭐⭐⭐⭐ “Needed a commercial septic system for our new shop on Highway N. These guys know St. Charles County regulations inside and out. Fast permitting help, competitive price, and the system works flawlessly. Will use them again for future projects.” — Chris H., Owner, Black Walnut Automotive

⭐⭐⭐⭐⭐ “Replaced a 40-year-old failing septic tank and field. The crew was respectful, worked efficiently, and explained everything along the way. Couldn’t be happier with the results.” — Jennifer L., Black Walnut, Missouri

Ready for Worry-Free Septic Service in Black Walnut, MO?

Don’t wait for slow drains or soggy yards to turn into expensive emergencies. Whether you’re building a new home, replacing an old system, or need expert excavation and grading, House Excavating LLC is Black Walnut’s proven local expert.

Call (636) 213-5003 or (573) 203-1123 now or fill out our quick contact form for your free, no-obligation quote. Same-day and weekend appointments available!

House Excavating LLC – Proudly serving Black Walnut, MO 63301 and all of St. Charles County with honest pricing and guaranteed workmanship. Missouri licensed & insured.