MC311 Logo
Call 311 To Get It Done!
Visit montgomerycountymd.gov/311
For Emergency: 911 | Out of County: 240-777-0311

SEARCH

Enter an English language keyword to search the 311 web site:
Results will be returned in English language

All Services

PERC test
Percolation testing is the process of soils evaluation including establishment of infiltration rates for soils that make up an area intended for the installation of an initial septic system and replacement septic systems. All PERC tests begin with a water table evaluation that must be done in the Spring of the year, typically Feb. 1 to April 15.
Find more information from the following link(s):
  • Percolation Testing
  • Water Table and Percolation Testing