Septic Inspections
Septic System Inspections In St. Charles County
Proudly Providing Inspection Services for St. Charles, O’Fallon, St. Peters, Wentzville, Harvester, and the Greater St. Louis Area
A septic inspection is a crucial service that helps ensure your septic system is functioning properly, protecting your property, your health, and the environment. In Missouri, where many homes rely on private septic systems, routine inspections are essential—especially during property transfers or if you’ve noticed signs of system failure.
A septic inspection involves a detailed evaluation of your entire onsite wastewater treatment system. A certified inspector will assess:
- Tank condition: Checking for cracks, leaks, or deterioration.
- Sludge and scum levels: Ensuring the tank isn’t overloaded.
- Inlet and outlet baffles: Verifying they’re intact and working.
- Drainfield performance: Looking for signs of saturation or failure.
- Pump and alarm systems (if applicable): Testing functionality.
- Water usage and flow: Confirming the system is appropriately sized for the household.
Missouri Regulations
The Missouri Department of Health and Senior Services (DHSS) regulates onsite wastewater systems under state law. Inspections should be performed by a licensed or certified inspector, especially when required for real estate transactions. Local counties may also have their own rules—so it’s important to work with a provider familiar with regional regulations. An assessment of your system for a real estate transaction is required under 19 CSR 20-3.060 which outlines the Missouri Minimum State Standards. Some things to note about septic system inspections:
- The State does not recognize the term “Grandfathered In.”
- We do not reinspect repairs made by non-licensed contractors.
- We do not warranty tank size, and default to county permits, if on file.
- We do not match current # of bedrooms with the county assessors records.
- We do not inspect septic wiring.
- We do not match aerator control boxes to aerators, pumps or controls.
I Live Outside of St. Charles County. What Do I Do If There's an Issue with My System?
Contact a Septic Installer to bid/perform repairs. They will need a copy of the inspection report.
I Live in St. Charles County. What Do I Do If There's an Issue with My System?
We will automatically submit septic/well inspection reports to the county with all necessary contact info. The county will be in touch by email regarding any repairs needed.
- Following your inspection, you will need an account set up through the SEPTIC PORTAL to view progress: www.stcseptic.com.
- A list of repair companies are available through the SEPTIC PORTAL. Through the portal, you’ll be able to access your inspection reports, active licensed contractors, and on-site wastewater treatment installers.
- All communication is done through the portal, and repair receipts can be uploaded once you click on the blue Permit # link next to the appropriate address.
- You can contact STC directly at bce@sccmo.org, or 636-949-7345.
- STC will issue the Septic Certificate by email.
When Should I Order a Septic Inspection?
In Missouri, septic inspections are typically required:
- Before buying or selling a home
- When applying for certain permits or upgrades
- If your system is over 3 years old and hasn’t been inspected
- After experiencing slow drains, sewage backups, or odors
Why are Septic Inspections Important?
Failing septic systems can lead to expensive repairs, property damage, and health hazards. A professional inspection:
- Helps prevent unexpected system failures
- Protects groundwater and nearby wells
- Ensures compliance with state and county codes
- Offers peace of mind for homeowners and buyers
Additional Resources
NPI CoMo is happy to help our clients navigate the county septic system requirements. Here are some additional resources to keep your septic system in great shape. Contact our team today with any questions or to book your inspection.
