We’re Here To Help (517)366-9332
DeJonghe Septic & Excavation is a family-owned and operated business proudly based in Tecumseh, Michigan. With deep local roots and a strong reputation for dependable workmanship, we serve homeowners, businesses, and contractors throughout Branch, Hillsdale, Jackson, Lenawee, Monroe, St. Joseph, and Washtenaw Counties.
We specialize in professional septic system and excavation services, offering reliable solutions for both residential and commercial projects. From new system installations and replacements to repairs, site preparation, and excavation work, our experienced team is fully equipped to handle jobs of all sizes with precision and care.
For your peace of mind, we are fully licensed and insured, and we stay up to date with all local and state regulations. When you choose DeJonghe Septic & Excavation, you can trust that you’re working with a knowledgeable, reliable team committed to getting the job done right the first time.
Contact us today to learn more about our services or to request a quote—we look forward to serving you.
ABOUT US
HOW CAN WE HELP?
Emergency Septic Services Available 24/7
Septic tank cleaning and pumping
Septic inspections
Septic tank locating
Septic riser installation
New septic system installation
Septic system replacement
Camera inspections
SEPTIC SERVICES
Hydro jetting
Grease line cleaning
Floor drain cleaning
Storm drain cleaning
Preventative maintenance programs
DRAIN SERVICES
EXCAVATION SERVICES
Additional services offered upon request
Underground utility work
Building site preparation & grading
Footings & foundations
Driveway removal & replacement
French drains
Erosion control
Serving the septic and drain field industry since 1937, the DeJonghe family brings generations of trusted experience. DeJonghe Sanitation is the oldest sanitation company in Lenawee County and was issued the county’s first septage license.
In 1962, Eric’s grandfather purchased the business from his father and continued operating it for nearly five decades, retiring in 2009 after a lifetime of septic tank and drain field installations. Eric grew up immersed in the family business, spending his childhood riding in, operating heavy machinery, and learning firsthand how to install and service drain fields and septic systems alongside his grandfather, Larry.
Today, as owner of DeJonghe Septic and Excavation, Eric is proud to carry on his family’s multi‑generation legacy. He is deeply committed to providing quality workmanship while also taking the time to educate customers so they can make informed decisions about their systems. For Eric, trust, knowledge, and doing the job right remain the foundation of everything the company stands for.