1. The water that flows into a well from subterraneous springs, water drawn from a well.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• qell water,
• aell water,
• sell water,
• eell water,
• 3ell water,
• 2ell water,
• wwll water,
• wsll water,
• wdll water,
• wrll water,
• w4ll water,
• w3ll water,
• wekl water,
• wepl water,
• weol water,
• welk water,
• welp water,
• welo water,
• well qater,
• well aater

The adjective form of "well water" would be "well-watered".

The plural form of the word "well water" is "well waters".

The singular form of the word "well water" is simply "well water".