Panduwasnuwara palace had good provision for ventilation and there were soakage pits for drainage.
From the en.wikipedia.org
Instead, the treated water is discharged to airport land in an extensive underground soakage network.
From the odt.co.nz
The spillage and soakage threat is at Level Orange.
From the chron.com
More examples
Soak: the process of becoming softened and saturated as a consequence of being immersed in water (or other liquid); "a good soak put life back in the wagon"
A soakage, or soak, is a source of water in Australian deserts.