Water Hygiene Assessment, Treatment and Maintenance
Water Hygiene Assessments
We inspect water systems to identify potential risks and maintenance requirements. Assessments can cover infrastructure ranging from pipework to cooling towers, with findings and recommendations recorded in a report.
Water System Cleaning
Cleaning addresses deposits and contamination within the agreed system. The method and scope depend on the equipment, its condition and the findings of the assessment.
Water System Descaling
Descaling targets limescale deposits that can affect equipment performance. Treatment requirements should reflect the affected components and their suitability for the proposed process.
Water System Disinfection
Disinfection forms part of our water treatment services where required. The work is assessed against the system’s condition and identified hygiene concerns.
Heating and Chilled Water Treatment
We provide treatment and maintenance for heating and chilled water systems. Appropriate system care helps manage deposits and preserve equipment performance.
Water Hygiene Monitoring and Testing
We provide monitoring and testing as part of our water hygiene services. Contact us to confirm the checks, testing methods and reporting suitable for your property.
Planned Water Hygiene Maintenance
Scheduled inspections and maintenance help identify developing concerns. The programme is tailored to your systems, operational needs and agreed responsibilities
Our Solutions
Learn more about our water hygiene solutions.

Water Hygiene Support for Your Sector
We welcome enquiries relating to:
- Commercial offices and retail: water systems serving staff, customers and shared facilities.
- Healthcare premises: maintenance planning that considers vulnerable occupants and access requirements.
- Hospitality and restaurants: water systems supporting guest accommodation, kitchens and washrooms.
- Industrial facilities and warehouses: welfare facilities and relevant building water systems.
- Residential blocks and mixed-use developments: shared infrastructure and coordination with occupants.
- Construction and refurbishment: assessment and treatment requirements associated with altered water systems.
Speak to Our Water Hygiene Team
Looking for a water hygiene company or contractor in London or the South East? PHD Mechanical supports businesses, property managers and facilities teams with water hygiene assessments, treatment and ongoing maintenance. Whether you require a one-off service or support across several properties, our team can discuss your systems, operational needs and preferred timescales.
Request a free quote with your site address, system details and a brief description of the work required. Sharing existing assessments, test results or maintenance reports helps us understand your priorities and identify the appropriate next steps. We can discuss the proposed scope, applicable charges and whether an initial inspection is needed before pricing can be confirmed. For regular maintenance requirements, you can also apply for a business account.

Frequently Asked Questions
Can contractors arrange water hygiene work for refurbishment projects?
Contractors can contact PHD Mechanical to discuss assessment, cleaning, descaling and disinfection requirements. Provide the proposed work, system information and programme dates so the scope can be assessed. Any specialist commissioning, sampling or handover requirements should be identified at quotation stage and confirmed before appointment.
Do you provide assessment reports for contractor handover?
Our water hygiene assessments include reports setting out findings and recommendations. If the work forms part of a construction or refurbishment contract, share the required handover format and supporting documentation requirements in advance. This allows the reporting scope to be agreed alongside the work.
How often should facilities managers arrange water hygiene checks?
The frequency depends on the system, its use and the findings of the risk assessment. Different tasks may require different schedules, so a single annual visit may not cover every requirement. Monitoring and testing arrangements should follow the relevant guidance and be reviewed when circumstances change.
Does a satisfactory water test result replace a Legionella risk assessment?
No. A test result relates to the sample taken; it does not replace assessment of the wider system or an ongoing control programme. Facilities managers need to consider risk assessment, control measures, monitoring and records together. Testing requirements should be determined by the system and its assessed risks.
How can I confirm coverage, pricing and availability?
Contact PHD Mechanical with your postcode, a description of the water system and the service required. We serve London and the South East. Our team can confirm availability and discuss whether a site assessment is needed before quoting. Ask for the included work, testing costs where applicable and any additional charges to be clarified before proceeding.
Why Choose Us
We believe in strong compliance and workplace safety. We implement a robust safety program with the support of an independent professional safety consultant, ensuring the highest quality work can be undertaken in a professional and safe environment.










