Soil Testing Application and Inspection Process
All properties are either served by public sewer or a private septic system as its means of wastewater disposal. Properties that are ineligible for public sewer service must complete satisfactory water table tests and percolation or sand mound testing to establish a sewage disposal area on the property before it can be considered buildable.
🆕 The 2026 Wet Season has not opened. Montgomery County is experiencing significant, lingering rainfall deficits and is in a severe drought per the US Drought Monitor.
However, applications can still be submitted for the 2026 Wet Season. Please follow the submission guidelines as outlined in the 2026 Wet Season Memo. An announcement will be made via email and on the DPS website when the wet season opens. Please check back here for updates.
Percolation Testing Requirements for Deep and Shallow Systems
Percolation Testing Expiration Policy
Appeal Rights for Permit Denials
Montgomery County Soil Map Units
Guidelines for Percolation Testing
The soils testing process varies. Multiple visits may be required to obtain a sufficient number of satisfactory tests.
A non-refundable fee must accompany the application package at submittal. Please refer to the current fee regulation for information regarding fees associated with this process.
No, a permit is not required. Testing is applied for as a service using the Well/Septic Services or Permit Application.