Were Moats Filled with Sewage?

It turns out that those fairy tales you read as a child all left out a very important truth: The moats that surrounded medieval castles weren't just useful defenses against attack; they were also open sewers into which the castles' primitive waste disposal systems flushed human excrement and other foul substances.

What were moats filled with?

A moat is a deep, broad ditch, either dry or filled with water, that is dug and surrounds a castle, fortification, building or town, historically to provide it with a preliminary line of defence. In some places moats evolved into more extensive water defences, including natural or artificial lakes, dams and sluices.

What were medieval moats filled with?

Moats filled with water were usually supplied by a nearby source of water, such as a spring, lake, or river. Dams could be built that would control the level of water in the moat. While some fancy moats may have had stone sides, most moats had simple banks of earth left over from when they were dug.