What is true about Carly's well that draws about 20 gallons per minute located outside of an AMA?

The assertion that Carly's well, which draws approximately 20 gallons per minute and is located outside of an Active Management Area (AMA), is most likely an exempt well is accurate. In Arizona, the legal framework regarding wells establishes specific classifications that dictate the necessity for permits and registration based on the well's purpose and its location.

Exempt wells are typically those that have a limited capacity and are used for certain domestic purposes, such as household use, irrigation for a small garden, and livestock watering. Specifically for wells outside of AMAs, exempt wells are defined as those that pump less than a specified amount of water—usually up to 35 gallons per minute—making Carly’s well eligible for this designation.

Being outside of an AMA generally means the water management regulations are less stringent, which allows wells drawing less than the specified amount of water per minute to operate without needing a withdrawal permit or formal registration with the Arizona Department of Water Resources (ADWR). This situation reinforces why the classification as an exempt well is the most accurate statement regarding Carly's well. The other options relate to circumstances that would apply if the well were located within an AMA or if it exceeded the threshold for exempt status, but those conditions do not pertain to Carly's situation.