DIY & Crafts ruling
Can clay and pottery glaze go down the drain?
It hardens, settles or coats. Your drain would prefer none of those verbs.
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Sink or drainNo
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Garbage disposalNo
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ToiletNo
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Septic systemNo
01
Why the pipe objects
Clay settles into heavy sediment, while some glazes contain metals or other ingredients unsuitable for wastewater.
02
Do this instead
Use a settling bucket, reclaim clay and glaze, and follow studio and local hazardous-waste procedures.
03
Already did it?
Stop running water; more water may carry the material deeper. Scoop or wipe up what remains and call a plumber if a meaningful amount entered the line.