Resource library
Commercial Pool Log Guides
Everything a commercial pool operator needs to keep compliant records — in plain English.
Calculators
Free calculatorPool Chemical Calculator for Commercial PoolsFree commercial pool chemical calculator: chlorine, pH, alkalinity, calcium, CYA and drain-and-dilute doses for any volume — liquid chlorine, cal-hypo, acid.Free calculatorPool Volume Calculator (Gallons & Liters)Free pool volume calculator for rectangle, round, oval, kidney and irregular commercial pools and spas. Gallons, liters and m³ from length, width and depth.Free calculatorPool Chlorine Calculator: How Much Chlorine to AddHow much chlorine to add: liquid chlorine, cal-hypo, trichlor and dichlor doses to reach your free chlorine target, plus the CYA and calcium each one adds.Free calculatorPool pH & Alkalinity Calculator (Acid, Soda Ash, Bicarb)Pool pH and alkalinity calculator: muriatic acid, dry acid, CO₂, soda ash and baking soda doses for commercial pools, corrected for alkalinity and CYA.Free calculatorBreakpoint Chlorination CalculatorEnter free and total chlorine to get combined chlorine, the 10× breakpoint target and the liquid chlorine or cal-hypo dose for your pool.Free calculator · CDC guidanceFecal Incident Hyperchlorination CalculatorCDC fecal incident calculator: chlorine dose to reach 2 or 20 ppm, hold time from CT 15,300, CYA options and the earliest reopening time for your pool.Free calculatorPool Turnover Rate CalculatorTurnover time from pool volume and flow meter GPM, plus the flow you need for a 6-hour pool or 30-minute spa turnover. Free calculator.Free calculatorLangelier Saturation Index (LSI) CalculatorFree Langelier Saturation Index calculator for pools and spas: enter pH, temperature, calcium, alkalinity, CYA and TDS to see if water is corrosive or scaling.
Log sheets
Download · 6 pages · US LetterFree Printable Pool Log Sheet (PDF)Free printable pool log sheet PDF for commercial pools and spas: daily chemical log, hot tub log, safety checklist, maintenance and incident sheets.Free printable log sheetPool Chemical Log Sheet for Commercial PoolsFree printable pool chemical log sheet for commercial pools. Columns for FC, CC, pH, alkalinity, CYA, temperature, flow and corrective action. Download the PDF.Spas · hot tubs · whirlpoolsCommercial Hot Tub & Spa Log SheetFree printable hot tub log sheet for commercial spas: 4 timed tests a day for chlorine, pH and temperature, spa limits (3 ppm, 104°F) and when to close.Testing · recording · verificationPool Water Testing Log for Commercial PoolsHow to keep a commercial pool water testing log: which tests to run, DPD vs. test strips, how to record results, and a free printable water testing log.Equipment · filters · serviceCommercial Pool Maintenance Log SheetFree pool maintenance log sheet for commercial pools: what to record for backwashing, filters, calibration, drain covers and repairs. Printable template.Chemical safetyPool Chemical Inventory Log & Safe StorageKeep a pool chemical inventory log like the MAHC expects — chemicals received, used and on hand — plus safe storage rules and a free printable inventory log.
Compliance
Reference chartCommercial Pool Chemical Levels Chart (Chlorine, pH, CYA)Commercial pool chemical levels chart: free chlorine 1–10 ppm (3+ in spas), pH 7.0–7.8, combined chlorine under 0.4, CYA up to 90 ppm. Free printable chart PDF.Testing frequency guideHow Often Should You Test Commercial Pool Water?How often commercial and public pools must test chlorine, pH, alkalinity and CYA — MAHC rules, typical state requirements, and a printable log to prove it.Compliance guideCommercial Pool Record Keeping RequirementsWhich records commercial pools must keep — chemical, maintenance, incident, inventory and training logs — how long to keep them and how to pass inspection.Inspection prepWhat Do Pool Inspectors Look For? (Health Inspection Checklist)What pool inspectors look for: water chemistry, logs, drain covers, gates, safety equipment, signage and chemical storage — with a printable checklist.Opening proceduresPool Operator Daily ChecklistThe daily opening checklist for commercial pool operators: drain covers, gates, water chemistry, rescue gear, signage, chemical room. Free 7-day printable.State guide · WisconsinATCP 76: Wisconsin Public Pool Requirements & Pool LogATCP 76 for Wisconsin public pools and whirlpools: chlorine and pH limits, closure triggers, testing frequency, stabilizer rules and recordkeeping.
Operations
Contamination responseCDC Fecal Incident Response for Pools (Formed, Diarrheal, Vomit, Blood)CDC fecal incident response for pools: formed stool 2 ppm for 25 min; diarrhea 20 ppm for 12.75 hours (CT 15,300). Vomit & blood steps + incident log.Water chemistryCombined Chlorine & Breakpoint ChlorinationWhat combined chlorine means, why commercial pools keep it below 0.4 ppm, how to calculate breakpoint chlorination, and how to record it in your pool log.HospitalityHotel Pool Log for Pools & SpasA hotel pool log for front-desk and maintenance staff: what to test, how often, spa rules, safety checks and a free printable hotel pool and spa log.HOAs · apartments · condosHOA & Apartment Community Pool LogA pool log for HOAs, apartments and condo communities — what the health department expects, what to require from your pool service, and a free printable log.Digital vs. paper logsPool Service Software for Chemical Logging & ComplianceWhat to look for in pool service software for chemical logs and health-department compliance, how the main apps compare, and when a paper log still makes sense.