Debris, Particles & Residue

Black particles, specks, or debris appearing in your water or coming out of an appliance are almost always harmless — but understandably alarming. In water filters, the culprit is almost always activated carbon fines: tiny granules of the filter media that break loose during manufacturing or first use. In other appliances, debris can come from worn gaskets, mineral buildup breaking free, degraded rubber components, or food residue. The type of debris tells you the cause: gritty and uniform means carbon; slimy or irregular means possible mold; flaky white means mineral deposits; rubbery bits mean a deteriorating seal.

37 troubleshooting answers across 13 product categories