What is a potential drawback of relying solely on a backup water source?

Relying solely on a backup water source can indeed lead to potential costs associated with infrastructure development. Establishing a backup water source may require the construction of additional facilities, such as storage tanks, pipelines, or pump systems, which can be expensive. Moreover, maintaining this infrastructure also incurs ongoing costs related to operation, maintenance, and potential repairs during its use. This financial burden can be especially significant for farmers or organizations that may already be managing tight budgets.

In contrast, while issues like soil erosion, crop diversification, and reliance on seasonal changes are important factors in agriculture and irrigation, they may not directly connect to the financial implications of solely depending on a backup water source in the same way that infrastructure costs do.