Blog

Practical guides on pool and spa compliance, chemical testing, and aquatic facility operations — CPO certification tracking, regulatory reporting, and water balance.

September 8, 2026

The Langelier Saturation Index, Explained for Pool Operators

What LSI actually measures, why a single chlorine or pH reading doesn't tell the whole story, and how automatic evaluation flags imbalance earlier.

September 8, 2026

The Illinois IDPH Daily Pool Report: What Operators Actually Need to File

What the Illinois IDPH daily pool report covers, who has to file it, and how to generate it straight from logged readings instead of reconstructing it by hand.

September 8, 2026

CPO Certification Tracking: Why 'We Have It Somewhere' Isn't Good Enough

A practical look at CPO certification tracking — what regulators expect, why paper records fail, and what to track alongside every reading.