Water Hygiene Services
Ensure your domestic and drinking water systems remain clean and safe with our comprehensive water treatment and hygiene services.
At Thames Air & Water Tech, our water hygiene services are designed to safeguard public health, ensure regulatory compliance, and maintain system integrity.
We offer a full suite of services including Legionella risk assessments, routine monitoring, temperature checks, tank cleaning and disinfection, showerhead descales, and microbiological sampling.
Our team operates in line with ACOP L8 and HSG274, providing clients with confidence that their water systems are being managed to the highest standard.
Through our digital compliance portal, clients benefit from clear, auditable records and proactive alerts, making it easier to stay ahead of compliance obligations while maintaining a safe and hygienic environment.
We're here to help.
Our Water Hygiene Services
Legionella Risk Assessment
At Thames Air & Water Tech, our experienced Legionella risk assessors conduct detailed on-site inspections to identify and evaluate potential sources of Legionella bacteria within your water systems.
Using advanced digital tools and reporting platforms, we systematically assess all relevant systems—including hot and cold water services, cooling towers, showers, storage tanks, and any other associated plant or equipment.
Our digital process ensures accuracy, traceability, and clarity, producing a comprehensive report that outlines your current risk level, highlights any areas of non-compliance, and provides clear, prioritised recommendations for remedial actions.
All our Legionella risk assessments are conducted in full accordance with ACoP L8 (4th Edition) and BS 8580-1:2019, the recognised industry standards for Legionella control.
Legionella Control Regime
A robust Legionella management plan is essential not only for legal compliance but also for protecting the health and safety of building occupants. At Thames Air & Water Tech, our experienced Legionella control specialists work closely with clients to develop tailored, site-specific plans that meet the requirements of the Health and Safety Executive’s ACOP L8, HSG274, and all relevant legislation.
Our approach covers every aspect of Legionella risk management, from conducting thorough risk assessments and implementing control measures, to setting up monitoring regimes, reviewing records, and providing training for responsible persons.
If you already have a Legionella management plan in place, we can carry out a detailed gap analysis to assess its effectiveness and identify areas for improvement or non-compliance. We’ll ensure that your plan is up to date, comprehensive, and aligned with both legal obligations and best practice.
Cold Water Storage Tanks
At Thames Air & Water Tech, we offer comprehensive cold water storage tank services designed to ensure the safety, compliance, and longevity of your water systems. Our end-to-end support covers everything from initial installation to routine cleaning, disinfection, inspections, and ongoing maintenance. Whether you're installing a new tank or managing an existing one, we ensure that all works are completed to the highest standards in line with current HSE guidance, including ACoP L8 and HSG274 Part 2.
Our experienced technicians carry out thorough visual inspections and condition assessments to identify issues such as corrosion, scale build-up, microbial contamination, insufficient insulation, or poor access—factors that can compromise both water quality and compliance. Where deterioration or non-compliance is detected, we provide clear, prioritised recommendations for remedial actions, such as relining, replacement, or upgrading to improve tank performance and safety.
All activities are fully documented using our digital reporting platform, giving you instant access to inspection results, photographs, compliance status, and service history. This allows for transparent record-keeping and easy demonstration of compliance during audits or inspections. With Thames Air & Water Tech, you benefit from a proactive, expert-led approach to tank management that not only safeguards your water supply but also supports long-term asset integrity and regulatory peace of mind.
Thermostatic Mixing Valves (TMVs)
Thames Air & Water Tech provides a full range of services for thermostatic mixing valves (TMVs), including professional installation, routine servicing, maintenance, and in-service performance testing. TMVs play a critical role in controlling water temperature by blending hot and cold water to a safe, pre-set level—helping to prevent scalding, particularly in environments with vulnerable users such as care homes, hospitals, schools, and public buildings.
Our qualified engineers carry out thorough in-service safety checks to ensure each valve is operating correctly and consistently within the required temperature parameters. These checks include verifying fail-safe functionality, inspecting for scale or debris build-up, and testing the mixing performance under real system conditions. Where faults or inefficiencies are detected, we provide prompt remedial actions or replacement to maintain safe and reliable operation.
All TMV asset data including location, condition, test results, and any corrective works are recorded and uploaded to our secure digital portal. This provides clients with instant access to service records, compliance documentation, and scheduling for future inspections.
.jpeg)
Temperature Monitoring
Effective Legionella control starts with precise temperature management, as water temperature is one of the most critical factors influencing the growth and spread of Legionella bacteria. At Thames Air & Water Tech, our Tap Temperature Monitoring Services are designed to support this first line of defence by providing accurate, continuous tracking of temperatures at key hot and cold water outlets across your site.
Legionella bacteria are known to multiply rapidly in stagnant water that sits within the 20°C to 45°C range. To mitigate this risk, industry regulations require that cold water is stored and distributed at temperatures below 20°C, while hot water should reach a minimum of 50°C at outlets and at least 55°C in healthcare environments, where risk is heightened. Failure to maintain these temperatures can create ideal conditions for bacterial growth, posing serious health risks and leaving duty holders exposed to non-compliance.
Our temperature monitoring service ensures that your system remains within the required thresholds. Using calibrated digital thermometers and smart reporting tools, our engineers carry out scheduled checks or can install continuous monitoring systems for high-risk environments. All readings are logged and uploaded to our digital portal, giving you real-time visibility of performance, audit-ready documentation, and full traceability of any anomalies or corrective actions taken.
By consistently adhering to these temperature parameters, you not only reduce the risk of Legionella proliferation but also demonstrate full compliance with the HSE’s ACoP L8 and HSG274 guidance. With Thames Air & Water Tech, you can be confident that your water systems are being monitored and managed to the highest standard protecting your occupants, your reputation, and your legal responsibilities.
.jpeg)
Flushing Regime
Regular flushing of infrequently used water outlets is a key component of any effective Legionella control strategy, especially in buildings or areas that are under utilised, partially occupied, or temporarily vacant. When water remains stagnant in pipework for extended periods, it creates ideal conditions for the growth of Legionella bacteria and other waterborne pathogens, increasing the risk to both users and duty holders.
At Thames Air & Water Tech, our experienced service technicians provide scheduled flushing services to prevent stagnation and maintain system integrity. We work with you to identify low-use outlets across your estate such as seldom-used taps, showers, or toilets and develop a bespoke flushing regime based on your building’s risk profile and occupancy levels.
Each flush is performed in line with HSE ACoP L8 and HSG274 guidance, ensuring sufficient water movement and temperature turnover throughout the system. We record all activity via our digital portal, capturing data such as outlet location, flush duration, water temperature, and flow observations. This not only ensures full traceability but also provides you with up to date, audit ready compliance records.
Our proactive approach helps safeguard tenants, staff, and visitors by ensuring that all water especially drinking water remains clean, safe, and fit for purpose. Regular flushing also helps extend the lifespan of your pipework and fixtures by reducing scale, biofilm, and debris accumulation. With Thames Air & Water Tech, you gain peace of mind that even the least-used parts of your water system are being actively managed to the highest standards of safety and compliance.
.jpeg)
Shower Head Clean and Descale
Routinely cleaning, descaling, and disinfecting your shower heads is a critical element of water hygiene management, helping to prevent the build-up of sediment, limescale, sludge, and biofilms. These deposits create a favourable environment for the growth of harmful microorganisms, including Legionella bacteria, which can be aerosolised during use and inhaled by building occupants posing a serious health risk, particularly in high-risk environments such as care homes, healthcare facilities, leisure centres, and student accommodation.
At Thames Air & Water Tech, we provide scheduled showerhead and hose maintenance services to ensure these fixtures remain clean, safe, and compliant. Our technicians follow a structured process that includes the disassembly, thorough cleaning, descaling with approved products, and disinfection of each unit. This not only removes visible contaminants but also disrupts bacterial habitats, significantly reducing the risk of microbial proliferation.
Carrying out this maintenance at regular intervals, typically every three months or in line with your site-specific Legionella risk assessment, is vital for ensuring compliance with HSE ACoP L8 and HSG274 Part 2 guidance. It also demonstrates a proactive approach to duty of care responsibilities under health and safety legislation.
All work is recorded using our digital reporting system, giving you full transparency, service history, and evidence of compliance all accessible through our client portal. With Thames Air & Water Tech managing your shower hygiene programme, you can be confident that this often-overlooked risk area is being effectively controlled, contributing to a safe water system and peace of mind for your organisation.
Water Softeners
Our highly skilled service technicians provide end-to-end solutions for water softener systems, offering expert design, professional installation, thorough servicing, and ongoing maintenance. These services are particularly essential for properties experiencing water quality issues caused by hardness, which can lead to scale build-up and inefficiencies in water systems.
Regular maintenance is key to ensuring that your water softener operates at peak performance, delivering long-term reliability and efficiency. Our technicians are fully equipped to handle any repair needs, whether it involves minor adjustments, full system refurbishments, or complete replacements.
From initial design and installation to troubleshooting and upgrading existing softeners, we ensure your system remains in optimal condition, preventing costly contamination, extending equipment lifespan, and maintaining water quality throughout your facility.
.jpeg)
Laboratory Sampling & Testing
We offer laboratory sampling and testing services for all types of water systems, including swimming pools and spas.
Our UKAS-accredited independent laboratories analyse samples for pathogens such as Legionella, E. coli, and Pseudomonas aeruginosa, as well as other Pseudomonas species. If a positive result is detected, we will contact you immediately to discuss and implement the required remedial actions.
All activities and results are recorded in our customer portal, giving you easy access to data along with visual trend analysis.
Full List Of Services
Legionella Risk Assessments.
Legionella Control Regime.
UKAS Accredited Sampling.
Cold Water Storage Tank Disinfect.
TMV Servicing.
Shower / Spray De-Scale.
Calorifier Inspections.
Point Of Use Heater Servicing.
Temperature Monitoring.
Water Softener Servicing.
Infrequently Used Outlet Flushing.
RPZ Valve Servicing.
Expansion Vessel Flushing.
Dead Leg Removal.
Plate Heat Exchanger.
Our Accreditations
Our dedication to maintaining excellence and adhering to industry best practices.
