Educational Resources Developed by our Team of Experts

Hot tub Legionella risk is real, and the Evanston hotel case shows it. Here's what CDC and ASHRAE 188 expect, and 3 things to check this week.

Closed loop freeze protection fails silently as glycol dilutes and inhibitors deplete. Here's the glycol chart and what to test before winter.

Filter press slower in winter? Sludge viscosity and polymer kinetics are the real causes, not the press. Get the symptom table and seasonal fix.

Emergency cooling tower cleaning after a Legionella result follows a set sequence. See NYC's 24- and 48-hour deadlines, hyperchlorination specs, and records.

A Significant Industrial User faces stricter pretreatment permits, sampling, and reporting. See EPA triggers, what changes, and what puts an SIU in SNC.

The Langelier Saturation Index shows whether cooling water will scale or corrode. Get the formula, a worked example, and what to do when LSI drifts.