The Charles County Department of Health, Division of Environmental Health Services is suspending wet season testing as of April 13, 2026. Our current ground water monitoring network has dropped below the levels needed for wet season testing. We will continue to monitor our groundwater wells and will resume perc testing if conditions improve.

All properties not served by public water and sewer must have a perc test before beginning construction of any structure with plumbing. Residents needing a soil evaluation “perc test” should apply to the Division of Environmental Services at the Charles County Department of Health. Once wet season testing resumes, applicants will be scheduled in the order in which the applications were received. The Division of Environmental Health Services may be contacted at 301-609-6751.