Industry focus
Data centre cooling water treatment: uptime depends on the water
Prosep treats data centre cooling as the mission-critical system it is, with precision programmes for both the closed-loop and the cooling tower side.
In a data centre, cooling is not a comfort system. It is the system that keeps the facility alive, and its reliability is measured in the same uptime numbers as the IT load it protects. The cooling that removes heat from the halls runs through closed chilled-water loops and, on the heat-rejection side, through cooling towers or evaporative systems.
Both are water systems, and both fail in ways that threaten uptime if the water chemistry is neglected: corrosion product fouling a heat exchanger, scale on a condenser, biofilm narrowing a pipe, a Legionella count in an evaporative system. Prosep treats data centre cooling as the mission-critical system it is.
Both sides
Closed loops and heat rejection, both managed
Precision programmes for the chilled-water loops and the cooling towers — because both threaten uptime when neglected.
The closed-loop side
We maintain the inhibitor reserve, manage glycol condition and control microbial activity in the chilled-water loops — monitored rather than assumed, so internal corrosion never reaches the precision heat exchangers the facility depends on.
The heat-rejection side
On cooling towers and evaporative condensers we control scale against a measured saturation index and manage corrosion, microbiological fouling and Legionella to the principles of SANS 893.
Reliability by routine
Stated targets, on-site monitoring and trend reporting catch the depleting inhibitor or the rising approach temperature before it becomes an incident. In a facility measured on uptime, the routine is the point.
Water under scrutiny
Cutting reported water use without adding risk
Data centre water use is increasingly public and increasingly constrained. Pushing cycles of concentration as high as the chemistry safely allows cuts make-up water and blowdown — a cost saving and a sustainability number the facility may have to report. It is achieved by chemistry and control, not by accepting more risk.
The programmes
What protects the cooling
Standards we work to
In a facility where an aerosol-borne risk and a public-facing brand sit on the same site, the documentation matters as much as the dosing. Our engineers sample, dose, monitor, report, and come back — the routine described on how we work.
- SANS 893 — Legionella control (principles)
FAQ
Data centre water treatment questions
Why does a data centre need water treatment if the loops are closed?
Because closed loops are not truly sealed. Make-up water introduces oxygen and hardness, inhibitor depletes, glycol degrades and biofilm forms in stagnant zones, producing internal corrosion that fouls the precision heat exchangers the facility relies on. A maintained, monitored inhibitor programme prevents a slow failure in a system the uptime depends on.
How is Legionella handled on the heat-rejection side?
Through a managed programme working to the principles of SANS 893: risk assessment, a designed biocide regime, routine microbiological monitoring and records. In a data centre, with aerosol-generating evaporative systems and a brand on the line, the documented control matters as much as the chemistry.
Can treatment help us reduce our reported water use?
Yes. Running the cooling towers at higher cycles of concentration cuts make-up water and blowdown, which lowers both cost and reported consumption. It is achieved by holding scale and corrosion control through chemistry and measurement, not by accepting more risk.
How does water treatment protect uptime specifically?
By catching drift before it becomes failure. Stated targets, on-site monitoring and trend reporting surface the depleting inhibitor or the rising approach temperature while there is still time to act, rather than after a heat exchanger has fouled or a circuit has failed. The routine is the protection.
Your closed loops and heat rejection.
Tell us what you run. We assess each system on its own terms, design to stated targets, and report against them — so drift is caught before it becomes an incident.