2026-05-18 · 6 min read

Cooling Tower Water Treatment Contractor: Buyer Checklist

Cooling towers require specialist management because they can generate aerosols and depend on reliable water treatment control.

Before appointing a contractor, define responsibilities for chemical dosing, microbiological monitoring, inspections, cleaning, calibration, and emergency response.

Ask for evidence of competence, service report examples, escalation procedures, and how non-conformances are communicated to the responsible person.

Trend biocide residuals, conductivity, dip slides, legionella results, corrosion indicators, and visual condition so small changes are not missed.

Agree contingency plans before they are needed, including shutdown criteria, disinfection steps, resampling, and stakeholder communication.