Pool Water Testing

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Our Accreditations

Pool water

Water Testing for Swimming Pools, Spas & Hot Tubs

Acorn Environment Services is a leading water and environmental engineering specialist offering a range of laboratory based microbiological analysis and swimming pool water testing solutions (including tests for spas, hot tubs and hydrotherapy pools) to businesses, local authorities, healthcare organisations, schools, universities and private individuals throughout the UK and Ireland.

Our specialist laboratory procedures include tests for a range of common pathogens found in pool waters including E. coli, Pseudomonas aeruginosa, Total coliforms, TVC/Aerobic colony counts, Legionella bacteria and other less common organisms that can contaminate pools.

If you’re one of the many UK businesses, councils, hospitals, schools, universities or private households who own or operate a pool, hot tub or spa, then you’ll already know that maintaining the quality of the water in your pool is something which can’t be ignored.

Why test swimming pool water?

Unlike other water systems found in homes and commercial premises where the water is flushed or drained away after each use, swimming pools, hot tubs and spas could be considered as a re-circulating water system where the water is retained and re-used many times over.

If you’re not testing the chemical and microbial water quality regularly, taking steps to maintain balance and keep it clean, issues such as pH and water clarity can change, and more worryingly bacteria can start to grow rapidly.

Pool water sampling

What bacteria can contaminate a pool, spa or hot tub?

Bacteria such as E. coli, Pseudomonas aeruginosa and Legionella thrive in warm, poorly or untreated water and have the potential to make people using the pool or spa very ill.

Don’t assume that water which appears crystal clear is clean and safe to use – the types of bacteria which can grow in water are invisible to the naked eye.

All water samples collected are processed by independent UKAS accredited laboratory facilities within 6 hours of collection.

Certificates of water sample analysis will be sent to the client following the receipt of results from the laboratory.

Contact Acorn today to discuss a water management programme for your property.

Why choose us

Decades of Experience

Our qualified Engineers have over 25 years of experience in the water hygiene industry, so you can count on us to reduce risk and keep your water safe.

Member of the Legionella Control Association (LCA)

We fully registered with the LCA, working inline with the LCA Service Standards and the LCA Code of Conduct.

Aftercare & Prevention

Once we have carried out our Legionella water testing services, we will leave you with helpful tips on how to make sure your water stays safe.

North West & Yorkshire Coverage

We provide our Legionella testing services to clients in Greater Manchester, Yorkshire and the wider North West area. If needed, we can provide specialist Legionella testing UK-wide.

Our services

Pest Control & Specialist Cleaning


Our pest control services deal with every aspect of pest infestation removal. We’ll provide an initial report, remove them, and then advise on how you can keep them from coming back in the future. For pest removal in your home or commercial property, no matter the size or nature of the infestation, trust Acorn Environment Services Ltd.

Water Hygiene

We offer a wide range of water hygiene services, including Legionella risk assessment, water sampling, and the cleaning & disinfection of water tanks. We carry out in-depth audits and follow strict health and safety guidelines designed to keep your water supply safe and hygienic. We also offer bespoke packages for our clients when needed.

Specialist Cleaning

We offer thorough specialist cleaning services designed to treat hard-to-reach areas, including any job considered outside of typical commercial and industrial cleaning. These include graffiti removal, biohazard cleaning, or fogging to remove bacteria and fungi. For more information on specialist cleaning, hit the link below.

Speak to a specialist today

Whatever hygiene improvement requirements you may have – from pest removal to specialist cleaning – we want to help. Speak to one of our specialists today to take the first steps towards a cleaner future.

What our clients say

Trust Pilot


"I rang out of hours for a wasp nest and someone came that evening and sorted the problem for me and my little boy as he's highly allergic, he was friendly & helpfull and reassuring, would highly recommend them really easy to contact Friendly team"

Amanda Grimes


"Acorn were so helpful on there online chat I had an issue with pigeons nesting under my solar panels and didn't know what to do,withing an hour I'd been contacted given a quote and 24hrs after acorn had been cleaned all the mess up and removed all the nests and proofed all my solar panels stopping pigeons coming back under can't recommend enough!"

Gillian Brown


"Your technician was very polite and well mannered, he even made time to have a quick chat which is a surprise for me as most people who work on your home are just there to get job done and go 10/10!"

Keighley Boyes


"I had a pigeon problem so I contacted Acorn, they came out and got rid for me. They also did a house clearance for me at the same time. I was amazed at the quality of the work done, and the aftercare. I would 100% recommend them."

Martin Cowell


"Excellent Service thanks for attending so promptly and dealing with the problem and taking into consideration the complex needs of the situation."

Natalie Hatzer


"Acorn came to remove a wasps nest from the time to reporting it to Acorn arriving to remove it was a total of 3 hours. I was so impressed. The lads who came were very helpful, professional and polite. Great value for money and I will be recommending to all my family and friends"

Tracie Jackson

Customer reviews

UK laws dealing with water quality testing in pools, spas and hot tubs.

HSG282 gives advice on effective ways to safely manage and control spa-pool systems through:

  • design, commissioning, operation and maintenance;
  • testing and monitoring spa-pool water quality;
  • quality and frequency of inspections.

Legislation covering the control of legionella and other infectious agents in spa-pool systems can be found here.

UK health and safety laws dealing with swimming pool and spa water quality, testing and treatment really only come into play if you’re running a business such as a leisure centre, gym or hotel, or the pool is in a holiday property which is let to paying guests.

Owners and operators of pools and spas need to ensure sure that the water quality and treatment programmes are effective and meet current standards.

Although the law might not apply to domestic pools and spas, they provide excellent guidelines and standards which it makes sense to read, understand and comply with.

For more information both the Health and Safety Executive and the Pool Water Treatment Advisory Group (PWTAG) provide excellent guidance to help pool operators comply with health and safety law.

How It Works

Leave your water hygiene to the skilled hands at Acorn.

  • Book a survey

    Email or call our water hygiene experts for a FREE quote.

  • Need guidance?

    Unsure about the service that’s right for you? Our seasoned experts are ready to offer FREE advice.

  • Around-the-Clock help

    For those urgent moments, remember we’re here for you 24/7. Don’t hesitate to get in touch.

Speak to a specialist today

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