Advanced Guides for Pool Management Companies
These guides are for people who already run pools for a living. They skip the basics and go into the math, the edge cases and the problems that show up when you run many sites. Each one cites the code sections and sources it uses, so you can check the work yourself.
- Breakpoint Chlorination Math for Commercial PoolsSize a breakpoint dose from the MAHC 10x rule, pool volume and product strength, and learn when water exchange or the air plan is the better fix.9 min read
- Chemical Feeder Interlock: Monthly Challenge Test and RecordsHow to run and log the MAHC monthly chemical feeder interlock challenge test, what to do on a fail, and a 30-pool calendar that catches missed tests.9 min read
- CYA to Free Chlorine Ratio: Working the 45:1 MathRun the MAHC 45:1 CYA to free chlorine ratio as a daily number, see how trichlor feeds drift toward it, and work the drain-and-refill fraction.8 min read
- Hyperchlorination Math: CT Values and the CYA Drain TableHow to get hyperchlorination hold times from the MAHC CT value, when CYA forces a drain, and how to pick 20, 30 or 40 ppm to reopen on time.9 min read
- Langelier Saturation Index Worksheet for Commercial PoolsWork the MAHC Annex Langelier formula and factor table by hand, with an indoor and an outdoor example, a lever order and a 30-pool monthly sheet.8 min read
- Lifeguard In-Service Training Plan That Meets MAHC 6.3.3.4Build a lifeguard in-service plan around MAHC 6.3.3.4: the four record fields, the consecutive rescue demo, certificate rules and a 20-pool season plan.10 min read
- Lifeguard Rotation Math: Zones, Relief and the 60-Minute RuleTurn MAHC 6.3.3.1 into a rotation worksheet: zones, relief guards, minutes per station and handoff time that keep every guard under 60 minutes.9 min read
- Monthly Pool Client Report for HOA Boards and HotelsBuild a one-page monthly pool report for HOA boards and hotels: exceptions first, then water replacement, chemistry and flow trends, closures and repairs.10 min read
- NYC Pool Inspections by Month: When Violations PeakNYC routine pool inspections by month, indoor versus outdoor, and re-inspection rates, with a readiness calendar and every caveat in the data.9 min read
- Pool Chemical Release Response Plan: HAZMAT Decision PointsBuild the MAHC accidental chemical release plan: five required procedures, HAZMAT decision points, weekly supply checks, storage rules and a drill sheet.9 min read
- Pool Records Audit: MAHC 6.4.1 Checklist and 3-Year RetentionAudit your pool records against MAHC 6.4.1: the 17 daily items, inspections, logs and 3-year retention, with a worksheet and a sample audit.10 min read
- Pool Supervisor Route Planning: Visit Frequency and Drive TimeSet supervisor visit frequency from code floors and risk tiers, check it against visits-per-day math, and rebuild the route when a supervisor is out.9 min read
- Pool Turnover Time and Flow Rate: Auditing Your Pump RoomTurn flow-meter readings into turnover hours, check filter loading, read the MAHC bather-load method, and set a trend rule that flags falling flow early.8 min read
- Pool Water Replacement Math: 4 Gallons per Bather and DilutionTurn daily attendance into the MAHC discharge volume, count backwash correctly, and use the dilution formula to predict CYA, TDS and calcium after a drain.9 min read
- Qualified Operator Coverage: MAHC's 2-Hour Rule for Many PoolsClassify each pool under MAHC 6.3.1 as onsite, within 2 hours or weekly contract, then size operators, drive time and visit records for 10, 30 or 60 pools.10 min read