If you are planning a new septic system, it helps to know what the process actually looks like before work begins. A septic installation is more than just setting a tank in the ground. It usually involves site evaluation, permits, layout, excavation, tank placement, drain field installation, inspections, and coordination with the local health department. In Southeast Michigan, Al Pearson & Son provides septic tank and field installation, excavation, perc testing, and related septic services, and the company says it works directly with builders to establish timeline and scope so there are no surprises.
This guide walks through the typical septic tank installation process step by step, explains where septic permits fit in, and outlines the biggest factors that affect timeline and cost.
This is helpful whether you’re in Canton, Ann Arbor or Ypsilanti.
Step 1: Confirm the Property Can Support a Septic System
Before a septic system can be installed, the property needs to be evaluated. That usually means checking soils, site conditions, available area, and whether the lot can support both the septic tank and the drain field. Al Pearson & Son’s perc test page says percolation testing is often needed before permits can be approved or work can begin.
In Southeast Michigan, permit agencies and health departments often require site-specific review before issuing a permit. For example, Washtenaw County directs applicants to its sewage and well permit process and project application requirements, and Wayne County’s onsite sewage program includes site and soil evaluations for both new home sites and repair or replacement systems.
Step 2: Apply for Septic Permits
One of the biggest questions homeowners have is who handles the septic permits. In Michigan, septic permitting is generally handled through the local health department or county environmental health office rather than through one single statewide permit office. Official pages in Washtenaw, Livingston, Wayne, and Oakland counties all show permit or application processes for septic system installation, repair, or replacement.
Al Pearson & Son’s septic tank and field installation page says the company takes care of permits and city requirements as part of the installation process. That is important because permit requirements, timelines, and inspection steps can vary depending on the city, township, municipality, or county where the work is being done.
Typical permit-related items may include:
- A Septic Permit Application
- Site Or Soil Evaluation
- Plot Plan Or Property Information
- Bedroom Count Or Expected Flow Information
- Local Review And Approval
- Final Inspection Before The System Is Covered
Step 3: Finalize the Septic System Design
Once the site has been evaluated and the permit path is clear, the next step is confirming the layout and design. This is where the tank size, placement, and drain field layout are determined based on the lot, soil conditions, and project needs.
That design work matters because septic systems need proper separation from wells and other site features. Michigan EGLE notes that separation requirements between septic systems and wells vary depending on system type and local rules, and that the state well construction code sets a minimum isolation requirement of 50 feet between a single-family private well and a septic system, while some local codes require more.
For new construction, timing also matters. Al Pearson & Son says some communities allow the septic system to be installed late in the overall construction process, which many builders prefer so heavy trucks and equipment do not damage a newly installed system.
Step 4: Schedule Excavation and Site Preparation
Once approvals are in place, the project moves into excavation and preparation. This is the part most homeowners picture when they think about septic tank installation: heavy equipment on site, digging, grading, and preparing the area for the tank and drain field.
Al Pearson & Son specifically notes that septic installation requires heavy earth-moving equipment and that the company may also be able to help with related earth-moving work. Its about page also says the team handles excavating as part of its septic services.
Site preparation may include:
- Clearing Access For Equipment
- Marking Utility Locations
- Excavating For The Tank
- Excavating For Drain Field Installation
- Grading The Area As Needed
- Coordinating With The Builder Or Other Trades
Step 5: Install the Septic Tank
After excavation, the septic tank is placed at the approved location and connected to the home’s sewer line. The exact equipment and materials depend on the system design, but the goal is the same: place the tank correctly, connect it properly, and prepare the rest of the system for reliable flow to the drain field.
This is one reason experienced installation matters. Al Pearson & Son says it is licensed by the state of Michigan and insured, and that it is licensed in Livingston, Oakland, and Washtenaw counties for system repair and replacements.
Step 6: Complete Drain Field Installation
The drain field is one of the most important parts of the system because it handles final wastewater dispersal into the soil. A septic tank installation is not complete without proper drain field installation, and the field layout has to match the approved site conditions and permit requirements.
Drain field work often includes:
- Excavating The Field Area
- Installing The Approved Distribution Layout
- Connecting The Tank Outlet To The Field
- Confirming Proper Grade And Flow
- Preparing The System For Inspection
Step 7: Inspection and Approval
Before the system is covered and the job is fully wrapped up, most jurisdictions require inspection. Official county pages in Southeast Michigan make that clear. Wayne County says it performs inspections for both new and repaired systems, and District Health Department No. 2 states that a final inspection must be conducted before the sewage disposal system is covered or backfilled.
This inspection step is important because it confirms the system was installed according to the permit, approved design, and local requirements.
Step 8: Backfill, Final Grading, and Site Cleanup
After the inspection is complete, the system can be covered and the site restored. This usually includes backfilling, final grading, and cleanup around the disturbed areas.
On a new construction project, this phase is often coordinated with the broader build schedule. Al Pearson & Son says it works directly with builders to establish the timeline and scope of work so there are no surprises.
How Long Does Septic Tank Installation Take?
The actual on-site installation work may move fairly quickly once everything is approved, but the full project timeline depends on more than digging and setting the tank. In many cases, the biggest timing variables are:
- Permit Processing
- Site Evaluation Or Perc Test Scheduling
- Weather Conditions
- Builder Coordination
- Equipment Access
- Inspection Scheduling
- Whether The Job Is New Construction Or A Replacement System
Al Pearson & Son notes that timing can vary by city, township, or municipality, and that some communities allow more flexibility on when the system is installed during a construction project.
That is why homeowners should think of septic installation as a multi-step project rather than a one-day service call.
What Affects Septic Tank Installation Cost?
Septic installation cost depends on the site, the design, and the amount of work required. The most common cost drivers include:
- Tank Size
- Soil Conditions
- Drain Field Size And Layout
- Excavation Difficulty
- Permit And Inspection Requirements
- Replacement Vs. New Installation
- Access For Heavy Equipment
- Whether Additional Earth-Moving Or Related Work Is Needed
Because every lot is different, the best way to get useful pricing is to have the property evaluated instead of relying on a generic online number. Al Pearson & Son’s website positions the company around direct service, estimates, and job-specific planning rather than one-size-fits-all pricing.
Why Homeowners in Southeast Michigan Use Al Pearson & Son
Al Pearson & Son has been serving Southeast Michigan since 1953 and says it serves Wayne, Livingston, Washtenaw, and southern Oakland counties. The site describes the company as licensed and insured, and its installation page says it handles permits, city requirements, and coordination with builders during septic installation projects.
That combination matters because septic installation is not just about digging a hole. It is about getting the process right from site review through final inspection.
Frequently Asked Questions
Do I Need a Permit for Septic Tank Installation?
Who Handles Septic Permits?
Is a Perc Test Always Part of the Process?
A perc test or other site evaluation is often part of the process because the property needs to be approved for the system design before installation can begin. Al Pearson & Son’s perc test page says these tests help provide the answers needed before permits are approved or work begins.
How Long Does Septic Tank Installation Take?
What Is Included in Drain Field Installation?
How Do I Get a Price for a New Septic System?
Need Help With Septic Tank Installation in Southeast Michigan?
If you are planning a new system or replacing an older one, Al Pearson & Son can help you through the process. The company provides septic tank and field installation, perc testing, excavation, and related septic services in Southeast Michigan, and its site says it handles permits and works directly with builders to keep projects moving.
