Structured readings for every body of water, on whatever device is nearest — with per-pool thresholds, corrective actions and the monthly controller tests the MAHC describes.
A therapy spa and a 50-metre competition pool don't run to the same numbers. Thresholds are set per body of water, and each reading is compared with the range set for the pool it came from.
When a reading falls outside its range, OnDeck raises an alert and asks for the corrective action — supervisors record it on the reading, and lifeguards are prompted to tell a supervisor — so the record can show what was done about it.
Monthly MAHC controller interlock testing and the maintenance events that are hard to recall six months later — backwashes, manual fills, media changes, chemical deliveries — live beside the chemistry they explain.
The same entries as the index — there is only one description of any feature on this site.
Structured chemistry readings for every body of water, with per-pool thresholds so a spa and a lap pool don't share a rulebook.
Monthly MAHC controller interlock testing, recorded on a monthly schedule.
The commercial-pool maintenance events that inspectors and carriers both ask about.