Perc Test for Septic Systems

Septic Perc Testing & Soil Evaluation in Sunbury, PA

Professional Soil Testing for New Septic Systems and Repairs

Before you can build your dream home or replace a failing septic system in Central Pennsylvania, you need a successful Perc Test. At DirtSmith, LLC, we provide the precision excavation services required to help your Sewage Enforcement Officer (SEO) determine if your land is “buildable.”

Based in Sunbury, we serve Northumberland, Snyder, Union, and Montour Counties with reliable, on-time soil testing and site preparation.

Contact Us for a Perc Test Estimate


What is a Perc Test?

A percolation test (or “perc test”) measures the rate at which water is absorbed into the soil. In Pennsylvania, this test is a legal requirement for any property not connected to a municipal sewer system.

The results of this test determine:

  • If your lot is buildable for a residential or commercial structure.
  • The type of septic system required (Standard In-Ground, Elevated Sand Mound, etc.).
  • The size and location of your future drain field.

Our Perc Testing & Soil Probe Services

We work hand-in-hand with your local Sewage Enforcement Officer (SEO) and engineers to ensure the site is prepared exactly to Pennsylvania DEP standards.

1. Soil Probes (Deep Hole Testing)

Before the perc test, we dig “deep hole” soil probes (usually 6-7 feet deep). This allows the SEO to examine the soil layers and check for the “limiting zone”—such as high water tables or bedrock—that could impact your septic design.

2. Perc Test Hole Digging

We use specialized equipment to dig the required series of 6 to 10-inch diameter holes at the precise depths requested by your SEO. We ensure the holes are “scarified” (cleaned of smeared soil) to provide an accurate absorption reading.

3. Site Preparation & Clearing

Often, the best testing location is covered in brush or trees. We provide lot clearing and brush removal to ensure the SEO has clear access to the testing area.


Why Choose DirtSmith, LLC for Your Soil Test?

  • Local Expertise: We understand the unique shale and clay-heavy soil conditions of the Susquehanna Valley.
  • Precision Digging: We use compact, low-impact equipment to minimize damage to your property while meeting strict state depth requirements.
  • SEO Coordination: We schedule our digging to align with your SEO’s site visit, ensuring no time is wasted.
  • Fair Pricing: We provide honest, upfront estimates for all excavation and site work.

Frequently Asked Questions

How long is a Perc Test valid in PA?

Generally, perc test data remains valid as long as the site conditions haven’t changed. However, it’s always best to verify with your specific township SEO if you are using old data for a new permit.

What happens if my land fails a Perc Test?

A “failed” test doesn’t always mean you can’t build. It often means you may need an alternative septic system, such as an elevated sand mound or a drip irrigation system. We can help you navigate the next steps for site prep.

Do I need to be there for the test?

While you don’t have to be present, we recommend it so you can discuss the results with the SEO and understand where your future system will be located.


Ready to Get Started?

Don’t let soil testing hold up your project. Whether you’re a homeowner, a developer, or a realtor, DirtSmith, LLC is your partner for professional excavation and soil evaluation.

Serving Sunbury, Selinsgrove, Lewisburg, Danville, and the surrounding areas.

Request a Free Perc Test Quote Today