University of Maryland Extension

Septic System Location

Locating the components of your system can be difficult. Note where your drain pipe leaves the house; this will point you in the direction of the septic tank. A search in this area may reveal the septic tank inspection ports and shallow depressions marking the trenches. Unfortunately, the tank is usually unmarked. If you can not find any signs of your system, the local Health Department might have your building records on file. [Maryland County Health Departments numbers and addresses.]  (In winter months, the tile lines and septic tank are usually the last place frost forms, and the first place snow melts in your yard.)

Once you locate an unmarked tank, place a marker in the ground above the inspection ports and clean out manhole cover. Or, measure their exact distances from at least two reference points (such as a tree and the corner of the house) so you can easily find them again.

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