Hospital Water Treatment

Hospitals combine the two things Legionella needs with the people least able to survive it: large, complex water systems with long runs, dead legs and stored hot water, and patients who are immunocompromised, elderly or recovering from surgery. Legionella multiplies inside biofilm and limescale, so the deposits in a hospital's pipework, calorifiers and cooling towers are the habitat itself. That is why hospital water treatment is a patient-safety issue and a statutory duty under ACOP L8 and HTM 04-01, not merely a maintenance one.

Yes. Limescale and biofilm reinforce one another: scale gives biofilm a rough, porous surface to colonise and nutrients to draw on, and the resulting layer shelters Legionella and other bacteria from chlorine and thermal disinfection. Scale also narrows pipes and creates the stagnant, warm conditions in which Legionella multiplies. Controlling scale and biofilm physically removes that habitat, so a disinfection regime acts on the bacteria rather than on the material concealing them.

In two ways, both indirect but important. It disrupts biofilm across pipework and heat-exchange surfaces, removing the environment where Legionella harbours and multiplies. And it controls the limescale that gives biofilm its foothold and shelters bacteria from disinfection. Cleaner surfaces mean your existing chlorine, thermal or biocide regime works on the bacteria rather than on the deposits hiding them. It supports your Legionella risk-management plan — it does not replace it.

Yes. HydroFLOW® is designed to sit inside an existing water safety plan and water safety group structure as a physical control layer. It does not replace the written scheme, temperature regime, sampling or responsible-person duties set out in ACOP L8 and HTM 04-01 — it makes them more effective by keeping biofilm and scale under control between interventions. It installs on live NHS estates with no shutdown, ward closure or pipe cutting.

No. HydroFLOW® is not a disinfectant and does not replace your written scheme, temperature monitoring, sampling, flushing regime or responsible-person duties under ACOP L8 and HTM 04-01. It sits inside that framework as a physical layer that keeps biofilm and scale under control between interventions, so the rest of your programme is more effective.

Yes — this is one of the main reasons hospitals choose it. The unit installs onto the outside of existing pipework: no cutting, no welding, no draining down, no ward closures and no interruption to water supply or patient care. It fits any pipe material and is typically installed in an hour on the plant room side, which matters when taking a system offline is not an option.

Scale on condensers and chillers forces plant to work harder — around 1 mm can cut heat transfer by about 7% — while cooling towers are a recognised Legionella risk. HydroFLOW® controls scale and biofilm across the cooling circuit, protecting efficiency and supporting hygiene. A California hospital cut biocide by 75% and blowdown by 65%, and a Las Vegas hospital moved to chemical-free cooling with existing scale released.

Typically yes. Because scale and biofilm are controlled physically, the chemical programme has less to fight: a California hospital reduced biocide by 75% and blowdown by 65%. Less biocide means less chemical storage, handling and COSHH burden on the estates team, less discharge, and a smaller footprint against the trust's sustainability targets — without weakening the hygiene regime.