Soil Percolation Testing
Septiclear Inc delivers accurate, certified soil percolation testing to determine whether your property can support a septic system — before you build, permit, or install.
5 Highlights on Soil Percolation Testing
- Percolation rate measurement — We dig and probe test pits to calculate exactly how fast water infiltrates your soil horizon, giving you a precise hydraulic load figure for system design.
- Soil profile analysis — Our team samples each boring hole layer by layer, identifying sandy, clayey, loamy, or gravelly compositions that directly affect drain field performance.
- Groundwater and water table assessment — We measure the depth to your water table and evaluate setback distances to protect aquifers from effluent contamination.
- Permit-ready documentation — Every percolation test we conduct produces certified reports that meet county sanitarian and engineer requirements for septic system permits.
- Absorption field sizing — We calculate the correct leach field dimensions based on your soil’s permeability, hydraulic load capacity, and residential or commercial use requirements.
Why Choose Our Soil Percolation Testing
Septiclear Inc brings qualified, expert-level soil percolation testing to residential and commercial properties across the region. Our certified soil scientists and licensed engineers conduct every test — not subcontractors, not trainees.
We follow ASTM and state-specific protocols when we excavate test pits, measure infiltration rates, and evaluate subsurface soil conditions. That means your percolation test results hold up with local sanitarians and permitting offices the first time you submit them.
Our team uses calibrated measuring gauges and standardized timing intervals to record percolation rates accurately. We don’t estimate. We don’t cut corners on boring hole depth or soil sample collection.
We’ve tested hundreds of soil profiles across a range of site conditions — compacted clay lots, gravelly hillside parcels, silty floodplain edges, and sandy coastal soils. That field experience lets us identify problem horizons, flag impermeable layers, and recommend the right absorption field design before your contractor breaks ground.
Septiclear Inc also coordinates directly with your engineer, inspector, or contractor to keep your project on schedule. You get a trusted partner who understands the full septic system process from percolation test to final permit approval.
Signs You Need Soil Percolation Testing
1. You’re applying for a new septic system permit: Most counties require a certified percolation test before they’ll issue a permit for a new septic tank and drain field installation. Without a valid perc test on file, your permit application stalls. Septiclear Inc produces the documentation sanitarians and engineers need to move your project forward.
2. Your property has never been tested: Undeveloped lots, rural parcels, and inherited land often have no soil percolation data on record. Before you design a leach field or absorption field, you need to know your soil’s actual infiltration rate. Clayey or compacted soils may require a sand mound or alternative system rather than a standard lateral drain field.
3. You’re expanding or replacing an existing system: When you add bedrooms, increase hydraulic load, or replace a failing drain field, the original percolation test may no longer apply. A new test pit and updated percolation rate calculation ensures your replacement system is sized correctly for current usage.
4. Your drain field shows signs of saturation or biomat buildup: Slow drains, wet spots above the leach field, and sewage odors near the absorption field suggest the soil can no longer handle the effluent load. A percolation test helps determine whether the soil is permanently saturated or whether remediation and repair are viable options.
5. You’re purchasing land for development: Before you close on a property intended for residential or commercial construction, a soil percolation test confirms the site can support a septic system. Impermeable soil, a high water table, or inadequate setback distances can make a parcel unbuildable without that data in hand.
Our Soil Percolation Testing Process
Step 1 — Site Review We review your property’s soil maps, topographic data, and any existing boring records before we arrive. This lets us identify the most representative locations to dig test pits and excavate boring holes.
Step 2 — Test Pit Excavation Our crew excavates test pits to the required depth, exposing the full soil profile. We log each soil horizon — noting texture, color, structure, and any restrictive layers like hardpan or seasonal water table indicators.
Step 3 — Percolation Hole Preparation We bore percolation holes to the prescribed depth, pre-soak them according to protocol, and allow the soil to reach a saturated baseline condition before timing begins.
Step 4 — Infiltration Timing and Measurement Using calibrated measuring gauges, we record water drop intervals at timed increments. We calculate the percolation rate in minutes per inch for each test hole.
Step 5 — Report and Certification We compile all soil sample data, percolation rates, water table depths, and setback distances into a certified report. We submit it directly to your engineer, sanitarian, or permitting office.
Brands We Use
Septiclear Inc uses professional-grade equipment and trusted product brands to conduct accurate, reliable soil percolation testing on every job site.
- Hach
- AMS Inc.
- Soilmoisture Equipment Corp.
- Humboldt Mfg.
- ELE International
- Forestry Suppliers
- Ben Meadows
- Trimble
- Leica Geosystems
- Ohaus
All equipment we bring to your site is calibrated, maintained, and inspected before each percolation test.
Other Services
| Soil percolation testing | Perc test | Infiltration rate measurement |
| Soil percolation test service | Percolation rate testing | Drain field soil evaluation |
| Professional soil percolation testing | Septic perc test | Soil absorption field assessment |
| Residential soil percolation testing | Land percolation test | Hydraulic load soil analysis |
| Certified soil percolation testing | Soil infiltration test | Septic system soil evaluation |
FAQs About Soil Percolation Testing
What is a soil percolation test?
A soil percolation test measures how fast water infiltrates the soil at a specific depth. The result — expressed as a percolation rate in minutes per inch — tells engineers and sanitarians whether the soil can absorb effluent from a septic system drain field.
When do you need a percolation test?
You need one before installing a new septic system, replacing a failing leach field, or developing a parcel that has no existing soil data on record. Many counties also require an updated perc test when you expand a structure and increase the hydraulic load on an existing system.
Why does the percolation rate matter?
The percolation rate determines the size and type of absorption field your property requires. Soil that drains too fast — like coarse gravel — may not filter effluent adequately before it reaches the water table. Soil that drains too slowly — like dense clay — can’t handle the daily effluent load without saturating and backing up.
How does Septiclear Inc conduct a percolation test?
We excavate test pits, log the soil profile, bore percolation holes, pre-soak them, and then measure water drop at timed intervals using calibrated gauges. We compile the data into a certified report ready for permit submission.
Can a property fail a percolation test?
Yes. Impermeable soil, a shallow water table, or inadequate setback distances from an aquifer can disqualify a standard drain field design. In those cases, we assess whether a sand mound, aerobic treatment unit, or alternative system can meet your site’s conditions.
Does Septiclear Inc handle the permit paperwork?
We produce the certified percolation test report and coordinate with your engineer, sanitarian, or local permitting office to make sure the documentation meets all submission requirements.