photo collage

Print Email

Wet Season Percolation Testing

Department of Health Announces Wet Season Perc Testing

Season Extended to April 28, 2017

The Anne Arundel County Department of Health began on-site evaluations and perc testing for wet season on Monday, April 10. Wet season perc testing appointments were scheduled, and all applications must have been received by Thursday, April 13. The closing date for wet season was extended to Friday, April 28, based on the monitoring well data and projected rainfall.  

To apply online​ ​click here.

The application and information on perc testing are also available at ​ or by calling the Bureau of Environmental Health at 410-222-7193. Send completed applications to the Anne Arundel County Permit Application Center, 2664 Riva Road, Annapolis, MD 21401. Testing is conducted on a first-come, first-served basis.

Wet season testing is required for properties located in areas of the county with typically high water table conditions, and the highest water table is usually experienced during February, March and April. Testing was delayed this year due to low groundwater levels. Currently, monitoring wells in Anne Arundel County indicate groundwater levels are acceptable for wet season perc testing. These wells are part of a monitoring well network used by the Maryland Department of the Environment to assess groundwater levels. 

Testing provides an accurate assessment of a septic system’s ability to work in all seasons. The information provided by site evaluation and perc testing is used to determine the size and type of septic system that can be installed on a specific lot. In some cases, because of adverse soil or groundwater conditions, a property may only be developed when public sewer is available.