Esias 22:9

9 And they shall uncover the secret places of the houses of the citadel of David: and they saw that they were many, and that one turned the water of the old pool into the city;

Esias 22:9 In-Context

7 And it shall be thy choice valleys shall be filled with chariots, and horsemen shall block up thy gates.
8 And they shall uncover the gates of Juda, and they shall look in that day on the choice houses of the city.
9 And they shall uncover the secret places of the houses of the citadel of David: and they saw that they were many, and that one turned the water of the old pool into the city;
10 and that they pulled down the houses of Jerusalem, to fortify the wall of the city.
11 And ye procured to yourselves water between the two walls within the ancient pool: but ye looked not to him that made it from the beginning, and regarded not him that created it.

The Brenton translation of the Septuagint is in the public domain.