Chemical Log
A chemical log is a written or digital record of every pool water test result and chemical addition, used for maintenance tracking and liability documentation.
Definition
A chemical log is a written or digital record of every pool water test result and chemical addition, used for maintenance tracking and liability documentation.
Typical Values: Test at minimum twice weekly; record every chemical addition
In Plain Language
A good chemical log records: date and time, all test results (FC, TC, CC, pH, TA, CH, CYA), any chemical additions (product, amount, time), equipment status notes, and any unusual observations. For vacation rentals and commercial pools, logs are a legal protection tool and often a regulatory requirement. Retain logs for at least 3 years.
Why It Matters
Chemical logs provide evidence of responsible pool management and help identify patterns that lead to recurring chemistry problems.
Typical Values
Test at minimum twice weekly; record every chemical addition
Last reviewed: 2026-06-01