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Clean WaterControl pathogens, biofilm and cost where conventional treatment failsAir & Infection ControlReduce airborne pathogens and infection risk, with no ozoneEnergyCut energy and recover it from the systems you already runAgriculture & SoilUse less water and fertiliser while protecting yield and soil
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Healthcare & HospitalsKeep patients safe and your accreditation secure, with infection, Legionella and AMR risk reducedWater & WastewaterStay in consent, and cut the energy and chemicals it takes to get thereCommercial & FacilitiesMeet your EPC and disclosure obligations while running cost and carbon fallAgriculture & Urban FarmingProtect your yield and soil while using less water and fertiliserLocal AuthoritiesMove your estate towards net zero with compliant assets, funded to saveEmerging MarketsBuild investable, accreditation-ready infrastructure on reliable water, sanitation and powerHotels, Hospitality & LeisureKeep guests safe and pools open, with Legionella risk controlled and pool-hall cost cutData CentresCut the cost and water your cooling burns, and harden Legionella control, without touching uptimeFood & Beverage ProcessingCut your trade-effluent bill and hold consent, without touching food safety or uptime
Tools
Where You'd Gain MostPick your sector and what is driving you, and see where you would gain and where to startTrade Effluent Bill EstimatorEstimate your annual trade-effluent bill and see how much is driven by strength, the part you can reduceWater Safety Risk ScorecardAnswer eight quick questions and see your indicative Legionella and waterborne risk band, and where to startCompliance Readiness CheckerPick the duty you answer to, from Legionella to net zero, and see your readiness band and the gaps to closeAeration Energy Cost CalculatorSize the annual energy, cost and carbon of aeration, the single largest energy load in wastewater treatmentCooling Tower Water & Cost CalculatorEstimate the annual water and chemical cost of a cooling tower, and the share that treatment can reduce
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Healthcare

What zero-pathogen water systems mean for compliance and accreditation

5 min read

In a hospital, water safety is not a maintenance task, it is a regulated duty. A water system that tests to zero pathogens, with independent evidence, is what turns that duty into a clean compliance file and supports accreditation.

What does the law actually require?

Water safety in healthcare sits under statutory duties and recognised standards: the control of Legionella in water systems, and, in the NHS, the safe-water technical memorandum that the regulator enforces. These place a continuous duty on a named responsible person to assess the risk, control it, and keep records that stand up to inspection.

It is not a remote risk. Legionnaires' disease in England and Wales is now caught in the community more often than abroad, and it still kills around one in thirty-five of the people who contract it. The duty is personal, and it does not pause.

What does a water-safety failure cost?

Healthcare-associated infection already costs the NHS somewhere between roughly GBP 774 million and GBP 2.1 billion a year, adds around GBP 1,457 to the cost of every case, and ties up close to a fifth of bed capacity. Each outbreak is also a regulatory and reputational event.

Outside the hospital, the same duty bites just as hard. A single spa-pool failure has led to three deaths and a fine of GBP 1 million under health and safety law. The lesson travels: a controllable water risk that is not controlled is a seven-figure, personal liability.

Why is 'zero, and verified' the bar?

A claim is not evidence. What a water safety group, an inspector or an accreditor needs is an independent test that shows the system is clear, not an assurance that it should be. That is why the standard worth holding is zero detectable pathogens, confirmed by an accredited laboratory.

It is achievable. A recurring waterborne pathogen problem at a major UK facility was brought to 0 cfu/g in four days, confirmed by a UKAS-accredited laboratory, and a separate 1.6 million litre system was returned to zero Legionella, E. coli and coliforms, verified by a water-authority laboratory. Those are the kinds of results that go straight into the compliance file.

How does this connect to accreditation?

International healthcare accreditation rests on the basics being demonstrably in place, and clean, safe water is one of the most basic of all. A water system with independent, zero-pathogen evidence is not just a compliance win, it is part of the foundation an accreditation assessor is looking for.

The stakes are rising, too. Antimicrobial resistance is making infection harder to control, and the organisms that matter most form biofilm that is around a thousand times more resistant to conventional disinfection. Designing water systems to test clean, and proving it, is how a hospital stays ahead of both the regulator and the resistance curve.

Questions answered

Frequently asked

What standards govern hospital water safety?

The statutory duty to control Legionella in water systems, and, in the NHS, the safe-water technical memorandum, enforced by the regulator. Both place a continuous, evidenced duty on a named responsible person.

Does zero-pathogen water support accreditation?

Yes. International accreditation rests on the basics being demonstrably in place. Clean, safe water with independent, zero-pathogen evidence is part of the foundation an accreditation assessor expects to see.

Why does independent verification matter so much?

Because a compliance file and an inspector need proof, not assurance. Accredited or water-authority laboratory results, such as a system brought to 0 cfu/g and confirmed independently, are what stand up under scrutiny.

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Carrying a water-safety duty?

Tell us where infection or compliance risk sits hardest in your estate. We will review one system or area and show you the outcome, in confidence, before you commit.

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