Advice on testing a building water system
Where to sample, what culture tells you, what a water management plan has to contain, and which questions belong to a doctor. Three new articles a week.
Latest · September 11, 2026 · 7 min
Commercial water testing: what is actually being tested, and for what
One term covers three different purchases, from a chemistry panel on the incoming main to a microbial survey of a whole building. Knowing which one you need is most of the buying decision.
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September 9, 2026 · 6 min
Cooling tower cleaning: what it changes in a sampling result
The head query of the cluster, typed by people about to spend money on a physical clean. What that clean removes, what it cannot remove, and how the difference shows up on a laboratory report.
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September 7, 2026 · 7 min
Cooling tower cleaning services: how to buy one, and how to prove it worked
We do not clean cooling towers. We test them, which is how a facility finds out whether the cleaning it just paid for actually changed anything.
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August 21, 2026 · 6 min
Legionella risk assessment services: what you are actually buying
Forty searches a month and a measured cost per click of zero. Nobody is advertising on a service query, which tells you how this work is really sold, and what to check before buying it.
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August 19, 2026 · 6 min
A legionella risk assessment template: what it captures, and the one thing it cannot
Fifty searches a month for a form. A form is genuinely useful, and it cannot contain the only hard part of the job, which is knowing the pipework the form describes.
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August 17, 2026 · 7 min
What a legionella risk assessment covers in a US building
The phrase has a precise legal meaning in another country and a looser one here. Sorting that out is the first job, because most of what ranks for it is written for the wrong jurisdiction.
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August 13, 2026 · 6 min
Hot tubs and spa pools: why they come up so often, and what to do about a domestic one
A thousand searches a month and no advertisers, because there is no commercial work behind it. Here is the honest answer for a home hot tub, and where commercial spa pools differ.
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August 10, 2026 · 7 min
What a water management plan has to contain to be worth having
A hundred and ten searches a month, no advertisers, and a document most buildings own without operating. The gap between the two is where the value is.
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August 8, 2026 · 7 min
Where to sample in a building, and why the location decides the result
Choosing outlets is the whole test. A well-run laboratory analysing the wrong twelve taps produces twelve precise numbers about nothing.
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August 6, 2026 · 4 min
If you are looking for a diagnosis, this is the wrong website
Around 480 people a month search for legionella disease testing. Most of them need a doctor, not a water sampler. Here is the difference, said plainly.
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August 3, 2026 · 6 min
Test kits versus laboratory culture: what the difference actually costs you
A kit is not a cheap version of a laboratory test. It answers a different question, and the competition on this search term tells you who benefits from the confusion.
Read it→August 1, 2026 · 7 min
Cooling tower water treatment and legionella: two programmes that have to agree
The chemistry programme and the legionella programme are usually run by different people to different targets. Where they disagree is where towers go wrong.
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July 30, 2026 · 7 min
What a legionella test tells you, and what it does not
A result is a count from one tap at one moment. Understanding how narrow that is turns a number into information.
Read it→Sampling planned against your schematic
Four questions, then a call. Temperatures and treatment records should be read rather than remembered.
Legionella Screen samples building water systems and cooling towers and has the samples analysed by culture in an accredited laboratory. It does not diagnose illness, does not treat anyone, and gives no medical advice of any kind.