Illinois pool log guide
Illinois pool log: IDPH daily operational report
The Illinois Department of Public Health's Swimming Facility Daily Operational Report must be completed daily and kept at the facility for at least three years. Here is what it asks for.
What to record
What the Illinois form asks for
Readings and records
- pH in the shallow and deep areas, morning and afternoon.
- Sanitizer (chlorine or bromine) in the shallow and deep areas, morning and afternoon.
- Turbidity: whether the main drain is visible.
- Flow rate against the required gallons per minute, whether the filter was backwashed, and water temperature.
- Combined chlorine and cyanuric acid (ppm), the initials of the person who completed the entry, and remarks on equipment failure, closures, injuries, weather or fecal accidents.
Printed on the official document
- pH 7.2 to 7.6
- Sanitizer: chlorine 1 to 4 ppm, bromine 2 to 8 ppm
- Temperature 76 to 92 °F for pools, 104 °F maximum for spas
- The form lists when the pool must be closed, for example chlorine under 0.5 or over 5.0 ppm, or the main drain not visible from the deck
How long to keep it
At least three years, at the facility (printed on the form).
Sources
Official documents
- Swimming Facility Daily Operational Report (IL 482-0108)
- Illinois Swimming Facility Code (Section 820.330 is cited on the form)
Read on the state's own website on October 21, 2026. Chlorlog is not affiliated with any state agency. Rules change and counties can add requirements, so check with your local health department.
Keep the daily readings on your phone
The free log sheet covers free and combined chlorine, pH, alkalinity, cyanuric acid, temperature and initials, and prints the whole month.