Flow Rate Test (Bank Requirement)
Definition
A flow rate test (also called a GPM test or well yield test) is a pump test conducted on an existing or newly drilled well to measure its water production rate over a defined period. For real estate and construction loan purposes, the test produces a documented GPM figure that lenders use to verify the well meets their minimum production threshold — typically 3 to 5 GPM for residential properties, though specific requirements vary by lender. The test involves running the well pump for a measured period while recording the flow rate and monitoring for declining yield or excessive drawdown. Results must be documented and certified by the testing professional and submitted to the lender with the loan application or appraisal package.
Frequently Asked Questions
Why Flow Rate Test (Bank Requirement) Matters
How Trident Drilling Company Uses It
Trident Drilling conducts flow rate tests and provides written documentation in the format required by Idaho lenders. For new wells, the test is conducted at completion and included in the well log. For existing wells during property transactions, Trident can perform a standalone flow rate test and provide certified documentation.