It's kind of the opposite. The cesspits that predated the sewer system were relatively friendlier to waterways. See this article on how changing to pipes caused

It's kind of the opposite. The cesspits that predated the sewer system were relatively friendlier to waterways. See this article on how changing to pipes caused the great Dutch stink: https://www.archaeology.org/issues/327-1901/letter-from/7205-letter-from-leiden https://www.archaeology.org/issues/327-1901/letter-from/7205...