Water Leakage
noun, verbal noun
A leak of water is a water leakage.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
漏水の原因は古くなったパイプでした。
The cause of the water leak was an old pipe.
漏水してるかもって管理会社に電話したら、すぐに来てくれたよ!
I called the management company about a possible water leak, and they came right away!
漏水が原因で電気系統にトラブルが起きることもあります。
Water leakage can cause issues with electrical systems.