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Sanitary Engineering Notice

The Septic System and Water Well Programs are working with reduced services during the COVID-19 pandemic. In an effort to serve the needs of the county residents, the review and approval of permits is being conducted on a limited basis. For more information, call Perc Testing: 410-222-7193, Septic Installations: 410-222-7194 or Water Wells: 410-222-7398.

Wet Season Percolation Testing

Last updated: April 19, 2021

2021 Wet Season Perc Testing Ends May 7

Landscape View of Perc

The Anne Arundel County Department of Health began wet season percolation testing on January 4, 2021, and it will end on May 5, 2021. Applications for mound sewage disposal systems should have been received by March 1, 2021 and testing performed by March 12. During this period, priority was given to locations where mound testing is expected. All other applications must have been received and scheduled by March 31, 2021. Testing was conducted on a first-come, first-served basis. The Department of Health will make efforts to accommodate testing for applications that were received after March 31 and that have not been scheduled; however, testing cannot be guaranteed.

Sanitarian measure different layers of soil The application and information on perc testing are available ​here or by calling the Bureau of Environmental Health at 410-222-7193. Send completed applications to the Anne Arundel County Permit Center, 2664 Riva Road, Annapolis, MD 21401.

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. Monitoring wells in Anne Arundel County indicate groundwater levels are in the average wet season range. These wells are part of a monitoring well network used by the Maryland Department of Environment to assess groundwater levels. Each year, the Department of Health announces the start of the perc test period once the network wells have groundwater levels acceptable for wet season perc testing.

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.

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