What information must be included on the disclosure for a private water supply?

The correct answer is that the disclosure for a private water supply must include the location of the well, in writing. This is essential because the location is critical for understanding the accessibility of the water supply, its proximity to potential contamination sources, and for any future maintenance or testing needs. It's also important to convey this information to prospective buyers or tenants, as it impacts their safety and the usability of the property.

While the depth of the well and information about potential public water supply sources can also be relevant, they are not universally mandated as part of the disclosure requirements in every situation. The focus on the location aligns with legal requirements and best practices in real estate transactions, ensuring that all parties are aware of where the water supply is located and can act accordingly.