Water Pooling Over the Drain Field: Causes and Fixes

A dry August week, and the grass over the drain field looks too good. It is bright green, spongy underfoot, and a shallow puddle sits where the soil should have dried. That is not a lawn win. With a septic system, water pooling over the drain field usually means water is staying near the surface instead of soaking in. Sometimes it is a simple yard issue. Sometimes it is the first sign that the field is starting to fail. Before you dig, start with the next step.

Do this now if the pooling is new. Stop running large amounts of water into the system today. Turn off the sprinkler line over the field. Redirect downspouts away from it. Keep people, vehicles and mowers off the wet area. If you also see slow drains inside, gurgling from a floor drain, a sewage smell outside, or wastewater backing up into a low shower or basement drain, treat it as urgent. Call a septic pumper or inspector for a same day or next business day check.

Do not pour an additive, a chemical or a home remedy into the tank hoping it will fix a wet field. It will not replace the repair the field needs.