Water, Testing, Analysis, Sampling

Water Testing | Water Analysis | Water Sampling

Water Testing, Analysis, Sampling


uRisk provides water testing, analysis and sampling for a wide range of bacterias from all ranges of water systems including: drinking water, hot and cold domestic supply, cold water storage tanks, swimming pools and spa’s, closed systems, lakes and reservoirs and anywhere else there is water.

Water Testing, Analysis, Sampling Strategy


Water testing appears to be a simple process of filling a sample bottle, but it can become extremely problematic as the method and process of sample taking can have an important effect on the final sample results.

For instance, there are two types of sampling. Pre-flush and post-flush. A pre-flush is a sample taken before the tap is flushed, and a post-flush is a sample taken after the tap is flushed. Depending on how long the tap is run will determine how far into the system the sample is taken from. This is why all sampling should be undertaken in accordance with BS 7592 as a simple change in how the sample is taken can have a significant impact on the results.

Also, it is important not to mix samples from two taps into a single bottle. This will dilute any positive results. It is also more costly should you have a positive because you will need to take further water samples to identify where the bacteria is present.

The appropriate techniques must be used to ensure the validity of the sample results. These techniques may include:


  • Appropriate use of PPE
  • Sampler cleanliness
  • Cross contamination
  • Speed of delivery from time taken to delivery to laboratory

Water Systems we Sample


  • Drinking Water (including water dispensers and coffee machines)
  • Hot and Cold Water Systems
  • Cold Water Storage Tanks
  • Hot Water Cylinders
  • Water Heaters
  • Dental Units
  • Swimming Pools
  • Spa Baths
  • Cooling Towers
  • Eye Showers
  • Eye Wash Units
  • Fountains and Features
  • Vending Machines
  • Closed Water Systems

Microbiological Testing



Total Viable Count (TVC)

Pseudomonas Aeruginosa




Chemical Testing





Dissolved Oxygen




Total Dissolved Solids (TDS)




Physical Testing


Effluent Analysis


Suspended Solids




Why carry out routine water sampling?


Routine water sampling is the most effective way to determine water quality. Without water testing, analysis, sampling 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 water testing 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. We are able to carry out tests on a wide range of microbiological samples and chemical testing services.

Flexible Water Sampling Services


uRisk provides a range of water sampling services from DIY test kits to one off sampling services (where a trained engineer carries out the sampling) or a routine water sampling programme carried out by trained engineers.

All sampling visits are inclusive of full water system inspections, results explanation, recommendations and certification.


Water Sampling Bottles


Water sampling bottles are sterile bottles treated with sodium thiosulphate which aims to neutralise the effects of residual chlorine in the sample bottle. These UKAS approved bottles should also be collected in the appropriate containers. So you cannot use any old plastic bottle!

All samples should be labelled with the sample number, date, sample type, company name, sample location, sample system (hot or cold), water temperature. Chemical samples will also need to be taken using the appropriate bottles.

Water Sampling Competence


All water hygiene engineers have been trained to take samples in a manner that is least likely to contaminate the sample. Whilst it may appear to be obvious, there any many procedures to be followed during the sampling process. For instance, placing the bottle cap downwards can alter the sample results. It’s really that easy to create false readings!


Do uRisk service my area?


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

Head Office: uRisk, Units 11-12 Baldock Industrial Estate, London Road, Baldock, Hertfordshire, SG7 6NG.

Are uRisk qualified?


Yes, all of our Legionella Risk Assessors at uRisk are Legionella Risk Assessment qualified and accredited by City & Guilds and can help assist you in meeting compliance today for HSE (ACoP L8). uRisk is Safe Contractor and Construction Online approved so you can rest assured that you are working with a trusted water hygiene service provider who put health and safety first.

All uRisk engineers are DBS Checked to ensure suitable people are entering your premises and to safeguard vulnerable people.

Our booking process

Get a Quote

To get a quote you can phone, email or complete our ‘Get a Quote!’ form to receive a quotation within 24 hours.

Book an Appointment

Once you’re happy with your quote we’ll confirm a suitable date and estimated time of arrival for your appointment.

Your Appointment

An engineer will be with you on your scheduled date, and will call you prior to arrival (when safe and possible).

Report & Support

Our team will quality assess your report for PDF distribution, typically within 2-10 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 wait for payment.

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.

Contact Us

01462 419444

Head Office:

Baldock Herts SG7 6NG


Monday to Friday:

0900 - 1700

Offices Closed for Lunch:

1300 - 1400

Water Hygiene Services

Extremely happy with our legionella risk assessment carried out by uRisk, easy to understand and great customer service. Thanks again
Nickayla Robertson
Nickayla Robertson
21:22 15 Jan 19
Brilliant service! Thanks a lot for the hard graft
Leon Macauley
Leon Macauley
21:12 15 Jan 19
Brilliant Service, efficient, professional, punctual and friendly.
Alex Windsor
Alex Windsor
18:21 15 Jan 19
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 Port
20:41 07 Aug 18
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 Pond
20:37 07 Aug 18
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 Thorne
20:29 07 Aug 18
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 Pates
18:30 07 Aug 18