Percolation Tests

Percolation (PERC) testing is required for any property that is not going to be served by public sewer and before any on-site sewage disposal system can be installed. If you plan to build on undeveloped property in Prince George's County and your property is unable to be served by public sewer, you must apply to the Prince George's County Health Department to conduct PERC testing.

2020 Wet Season​

2020 wet season percolation (PERC) testing for Prince George’s County begins on February 3, 2020 due to adequate soil saturation levels.
Test Tube


Application processing is handled on a first-come, first served basis.
• The fee for testing is $267.75 ($255.00 application fee plus $12.75 technology fee) per lot.
• No tests will be conducted until the application has been submitted and processed.
• Percolation testing applications that were previously received by the Health Department will be acceptable for this wet season.  Reapplication is not needed unless additional lots are being tested that were not indicated in the previous applications.

To obtain an application to perform PERC testing, please download the form Percolation Testing Application (PDF) or visit:
Prince George’s County Department of Permitting, Inspections, and Enforcement (DPIE)

Business Licenses Office
9400 Peppercorn Place,  First Floor
Largo, MD 20774