Select Page

Cambridgeshire Legionella Water Testing & Analysis

Legionella Water Testing | Water Analysis | UKAS labs only

Cambridgeshire Legionella Water Testing

UKAS accredited Legionella water testing services and water analysis with quick results


uRisk is a water hygiene and legionella risk assessment company that specializes in Legionella services to control the spread and risk of Legionnaires’ disease. These services include:

We now also offer a handy DIY Legionella testing kit which you can use to test your own water supply as an initial water safety measure. We have over 25 years of experience in water safety and all our water sampling is done in accordance with the British Standards BS7592 and HSE guidelines to give you the most accurate results possible. All of our engineers are DBS checked and City & Guilds qualified.

Cambridgeshire Water Testing for Legionella Bacteria


​Legionella bacteria analysis and legionella water testing is the process of taking a water sample, in a sterilized bottle (with sodium thiosulphate) for a true reading, before sending the water sample onto our UKAS accredited laboratory for quick analysis and fast results. The laboratory will identify the presence or absence of Legionella in the water sample collected, along with the bacterial count and Legionella species present.

It is important to bear in mind that for accurate results, the water samples must be taken at the right points within the water system and you need to know where to take those Legionella samples from. This means understanding your water system’s design and risk areas. You should also only ever use one sterilized bottle per outlet to avoid mixing samples from two different points.

If you are not sure what to do to meet your cold water systems’ legal requirements, then contact us today for specialist Legionella bacteria testing guidance. The purpose of testing water samples is to mitigate the risk of Legionnaires’ disease which is a result of the Legionella bacteria growing in the water system and can be fatal so should be taken seriously.

When to Test for Legionella


According to the HSE guidelines “water samples should be analysed for Legionella periodically to demonstrate that bacteria counts are acceptable.” It is important for you to know as well that Legionella risk testing is not a replacement for a full risk assessment and should be used in conjunction with a risk assessment and other legionella control measures to mitigate the risks of infection in your water system. The HSE also states within the HSG274 pt2 legionella bacteria testing “should be carried out where there is doubt about the efficacy of the control regime or it is known that recommended temperatures, disinfectant concentrations or other precautions are not being consistently achieved throughout the system.” A full risk assessment would also register if there is a need for water samples to be taken.


Legionella Water Testing In both hot and cold water systems, samples should be taken:

  • If considered necessary by the cold water risk assessment;
  • from areas where the target control parameters are not met (i.e. where disinfectant levels are low or where cold water temperatures are below 50°C (55°C in healthcare premises) for HWS or exceed 20°C for cold water systems);
  • from areas with legionella risks that are subject to low usage, stagnation, excess storage capacity, dead legs, excessive heat loss, cross-flow from water system, or other anomalies.


Legionella Water Testing In cold water systems, samples should also be taken as required:

  • from the point of entry (or nearest outlet) if the water is supplied from a private water supply or where the temperature of the incoming mains supply is above 20°C from the cold water storage tank or tanks;
  • from the furthest and nearest outlet on each branch of the system (far and near sentinel outlets).


Legionella Water Testing In hot water systems, samples should be taken as required:

  • from the calorifier hot water outlet and from the base of the calorifier, if it is safe to do so, as some systems are under considerable pressure;
  • from the furthest and nearest outlet on each branch of a single pipe system (far and near sentinel outlets);
  • from the furthest and nearest outlet on each loop of a circulating system (far and near sentinel outlets).

Cambridgeshire Legionella Water Testing & Legionnaires’ Disease


Legionella bacteria can be found in natural environments including ponds, rivers and lakes. Legionnaires’ disease growth and the bacteria can also be found in small amounts within the mains of a water supply. Where there is water and the conditions of creating contaminated water droplets (aerosols), people using or within the area of these services may be at risk. It is this bacteria found in the water supply which is the cause of Legionnaires’ disease.

Legionnaires’ disease is a form of pneumonia, which can be fatal. The most at risk are the very old and the very young, the ill and smokers to name a few. Legionella bacteria can also cause other, less harmful illnesses such as Pontiac fever and Lochgoilhead fever, which can affect all people. The main route of infection is through inhalation, by inhaling airborne water droplets that contain Legionella. It cannot be spread from person to person. The majority of cases or outbreaks of Legionnaires’ disease have been via domestic water services, evaporative cooling towers, and spa pools.


Conditions and contributing factors to Legionnaires’ disease growth include:

  •  Temperatures between 20-45°C
  • Available nutrients (including sediment, biofilm, algae, scale, rust, material, etc.)
  • Presence of biofilm on surfaces of water
  • Poor or inadequate management including training and awareness

Cambridgeshire Water Systems


Regular water sampling is the most effective way to determine water quality and test for the presence of legionella bacteria in your water system. Without testing the water, you are unable to identify water quality and therefore you are unable to determine whether your water management and legionella control is sufficient. With periodic legionella tests, you are able to demonstrate that your water management and legionella control procedures are suitable and the water in your water system is fit for purpose.

All our water samples are tested in UKAS accredited laboratories as standard and we are able to carry out tests on a wide range of microbiological samples and chemical testing services. Below are just some of the water systems that we can test for Legionella:


  • Drinking water (including water dispensers and coffee machines)
  • Hot and cold water systems
  • Coldwater storage tanks
  • Hot water cylinders
  • Water heaters
  • Dental units
  • Swimming pools
  • Spa baths
  • Cooling towers
  • Eye showers
  • Eyewash units
  • Water fountains
  • Vending machines
  • Closed water systems

Cambridgeshire Legionella Water Testing & Analysis Services We Offer

Engineer Visit

A qualified engineer will take legionella samples to British standards. From your legionella risk assessment they will identify the number of samples required and locations to take them from.

DIY Legionella Testing Kit

Receive your legionella test kit​ (DIY) in the post. The package includes your sterile sample bottles, instructions, and a free pre-paid return package.  Perfect for a non-intrusive, cost effective legionella sampling.

Subscription Testing Kits

Order repeat periodic legionella testing sample bottles to be scheduled for delivery when you want them: quarterly, six monthly or annually. Order your legionella testing kit (DIY) subscription today.

Cambridgeshire Service Process


A qualified engineer will take legionella samples to British standards. From your legionella risk assessment they will identify the number of samples required and locations to take them from.

Water Analysis

A UKAS Accredited laboratory will assess the water quality of your water sample, typically over 10 days.


Sample Report

A sample report will be issued to you within 14 days of the site visit.

All payments are due prior to booking completion unless agreed in writing for 30 days from the date of invoice. We will hold your booking time for 24 hours whilst we await payment.

Cambridgeshire Legionella Water Testing FAQs

Is Legionella testing a legal requirement?

No, legionella testing is not compulsory. The HSE’s Approved Code of Practice (ACoP L8) HSG 274, states that you are currently legally required to undertake a legionella risk assessment, but not water testing. However, whilst it is not compulsory, the HSG 274 confirms that the assessment may require or request that samples are taken for a variety of reasons and is recommended as part of your control measures.

Is testing for Legionella the same thing as an ACOP l8 risk assessment?

No, these are not the same thing and offer different benefits as part of an overall legionella control strategy. An L8 risk assessment is a legal requirement and helps to identify areas that pose a risk of legionella growth. Whereas legionella water testing is not a legal requirement but is the only way to detect the presence of legionella in the water system and therefore, plays a crucial role in legionella control. They are two different services for different purposes. Without a legionella risks assessment, legionella testing is carried out without the necessary information to undertake to test accurately.

How long do the results from the water samples take to come back?

Legionella water testing takes 14 days, this allows the bacteria to be cultivated and meet requirements set in place by UKAS for the correct bacteria testing conditions. Once the testing is completed the reports are produced by our team thereafter. Results are sent as soon as they become available and have been reviewed.

How much does testing & water sampling cost?

Legionella water testing starts from £40.00+VAT for a single bottle. There may be additional charges for site visits, delivery, postage, or specialist guidance or advice.

Do landlords have to do Legionella testing?

No, landlords must undertake a legionella risks assessment in line with the Health and Safety at Work Act 1974. However, as guidelines state for commercial properties, legionella water testing is recommended to determine legionella presents or as recommended by the legionella risks assessment, which is required.

How long does a Legionella certificate last?

A legionella certificate is a phrase that is used regularly but it has little meaning. You are required to have a risks assessment in line with the Legionella Control Association Health and Safety at Work Act 1974, COSHH, Public Health England Management of Health and Safety at Work Act to name a few. This risks assessment is a live document that should be required periodically as required by law & the guidelines used to state an assessment was required every two years. After a legionella risks assessment, you should be issued with a risks assessment report, and after a legionella test, you should be issued with a legionella test sample report. Legionella is a bacteria that must be managed continuously, and therefore a one-off certificate is insufficient to prove compliance and control of the bacteria.

Can I test for legionella myself?

Generally no. In order to test for and control legionella growth, you will need experience in growing bacteria in laboratory conditions to specific standards for accurate results.

Do I need to test for legionella in my domestic water system?

If you are not making money from your property, e.g. letting a property, then the answer is no. There is currently no law to undertake legionella water testing in private domestic properties. However, if you provide accommodation or let a property then you are required to ensure you meet all Health and Safety at Work Act 1974.

Where do uRisk offer Legionella testing?

uRisk services are nationwide. Whether you have one or multiple water systems and one or multiple sites, we provide services across the country, with qualified engineers scattered throughout the UK and offices based in Hertfordshire which is a 30-minute train journey to London King’s Cross.

Your Dedicated Cambridgeshire Water Hygiene Team

Legionella Monitoring


Customer Service

Legionella Control


Quality Control

water hygiene monitoring



Legionella Control Services

Luke V

Business Manager

Why choose uRisk?

25 Years Experience

Over 25 years of water hygiene and legionella control experience.

Customer Service Excellence

Friendly and simple advice by phone, email & online at your convenience.

City & Guilds Qualified

All staff are trained water hygiene consultants and engineers.

Nationwide Coverage

With engineers located all across the UK, we’re never too far away.

UKAS Accredited Testing

Our labs are UKAS approved providing you with quality assurance.

Full Compliance Services

Your one stop shop for Legionella control, no need to go elsewhere.

This is by far the best service I have received in a long time.Lloyd who we spoke to was super helpful and very thorough with everything.I would def recommend using this company, they are not just out for money they put their customers needs first.Thank you
Coral Dawkins
Coral D.
Incredibly detailed and professional team. Have been beyond helpful with with our CQC legionella compliance for our Safety. They’ve found solutions to fit around how we work and our budgets. We are always advised with reference to HSE which has been brilliant.
Amy Thorne
Amy T.
Richard & Nick are great. Really good work and nice people.
Joshua Ballard
Joshua B.
uRisk have been helping us with our Legionella Control for a number of years now. We've recently had a CQC audit and they were very impressed with our legionella compliance! Thank you for all your help.
Mike Port
Mike P.
Brilliant company, customer service was great! And engineers were fantastic. Thanks again uRisk! Will definitely be using them for all future work.
Nikesh Gohil
Nikesh G.
Extremely happy with our legionella risk assessment carried out by uRisk, easy to understand and great customer service. Thanks again
Nickayla Robertson
Nickayla R.
We have been working with Urisk for best part of year now. I could not recomend their services highly enough. They always promptly respond to our requests promptly and manage the job from start to finish seamlessly. I would highly recommend.
Sam Guest
Sam G.
Really easy to organise a risk assessment to be carried out at our offices and have had great help from them since to implement the necessary changes to keep the office safe. Would definitely recommend.
Holly Ferguson
Holly F.
A fabulous company, excellent customer service, they try to accommodate appoitments, and do there utmost in emergencies, been with them a few years now,  honestly cant fault them. Coming out of Covid 19, having our building urgently disanitised,  big thank-you to Luke and Lee for staying so late to get the job done!! Thank you Devon, for juggling the diary to fit us in so soon. A Team 🙂
Jo Maskell
Jo M.
Daniel did the testing today at PGHC He was really efficient, friendly and so professional. An absolute pleasure to deal with. Thanks Daniel
Lorraine Carruthers
Lorraine C.
Brilliant Service, efficient, professional, punctual and friendly.
Alex Windsor
Alex W.
My experience with URisk Water Hygiene from my initial enquiry, to their site visit to undertake a Legionella Water Risk Assessment at my office (MDG), to providing me with the report and aftercare has been superb! Efficient response times, excellent customer service, friendly, helpful advisors and assessors who are always ready to help and provide guidance. An absolute pleasure to deal with, I highly recommend!
Lauren Wakeman
Lauren W.
Brilliant service! Thanks a lot for the hard graft
Leon Macauley
Leon M.
My first time using Urisk for work at multiple sites. Daniel was absolutely brilliant, polite and professional. Highly recommended! 🙂
Claire Keay
Claire K.
We're a small GP practice and started using uRisk for legionella risk assessments. We opted to use their remedial and monitoring services and they've been absolutely great. We cannot recommend them enough! Thank you so much!
Amanda Pates
Amanda P.
Fantastic training courses and we've found the legionella risk assessment very easy to read and far more detailed than any we have previously had. 5 star service!
Gemma Pond
Gemma P.

We want to help you comply!