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.​

2015 Wet Season​
2015 wet season percolation (PERC) testing for Prince George’s County begins on MARCH 10, 2015 due to adequate soil saturation levels.
Test Tube
Application processing is handled on a first-come, first-served basis.
  • The fee for testing is $170 per lot.
  • No tests will be conducted until the application has been submitted and processed.
  • Percolation testing applications that were received by the Health Department during 2012, 2013 and 2014 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 the Prince George’s County Department of Permitting, Inspections and Enforcement (DPIE), Business Licenses Office, at:
9400 Peppercorn Place
First Floor
Largo, MD 20774