Why the log exists
A commercial pool log shows what staff checked, when they checked it, and what they added or adjusted. It helps a venue keep a clear history for managers, inspectors, and the team working the basin. For an overview of the product, visit Poolsheet or read the guides.
Rows to write
The usual log rows cover the date, the body of water, disinfectant, pH, temperature, chemical additions, and the name or initials of the person who made the entry. Some places ask for more detail, and some ask for less. If you want a simple starting point, see the pool log sheet.
Requirements differ by place
There is no one national form for every commercial pool log. Local health departments set their own rules, and a site may need a different record for each venue or type of water. If you need help understanding how Poolsheet fits into that workflow, check the features page or the waitlist.
A phone instead of a clipboard only
A phone can hold the same daily record that a clipboard once carried, with fewer loose pages to lose. Poolsheet is an iOS chemical log for commercial pools and spas, and the app is not on the App Store yet. Web and Android are planned, and the button joins the waitlist.
Chlorine and pH windows in the model code
- pH of the water: 7.0 to 7.8 (section 5.7.3.4.1).
- Minimum DPD free chlorine when the venue is not using cyanuric acid: 1.0 ppm (section 5.7.3.1.1.2.1).
- Minimum DPD free chlorine when the venue is using cyanuric acid: 2.0 ppm (section 5.7.3.1.1.2.2).
- Spas: minimum DPD free chlorine 3.0 ppm (section 5.7.3.1.1.2.3).
- Maximum free chlorine: do not exceed the product label (section 5.7.3.1.1.5). This page does not print a numeric chlorine ceiling.
- Cyanuric acid at aquatic venues stays at or below 90 ppm (section 5.7.3.1.3.2). If cyanuric acid is 300 ppm or higher, the venue stays closed until remediation (section 5.7.3.1.3.3).
Sources: 2024 CDC Model Aquatic Health Code, 5th edition (PDF) and CDC notes on operating public pools. Poolsheet is not part of the CDC.
Follow your local health department code. Poolsheet is not a health authority, not a pool operator license, and nothing here means the water is safe. The CDC Model Aquatic Health Code is voluntary guidance, not your local rule.