| Ostia49 | The small trough in front of the toilets carried clean running water for the Romans to use after concluding their business. A deep trench with a separate water supply ran beneath the toilet seats to carry away all waste. |
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| Ostia49 | The small trough in front of the toilets carried clean running water for the Romans to use after concluding their business. A deep trench with a separate water supply ran beneath the toilet seats to carry away all waste. |
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