Water Compliance & Legionella Control
Protecting your people, your assets, and your compliance through expert legionella control, water hygiene management, and technical water treatment services.
Water Compliance: A Legal Responsibility
Water compliance is the governance and maintenance of building water systems to meet UK standards (ACoP L8 and HSG274) and control legionella risks. It combines risk assessment, temperature management, monitoring, and documented PPM to keep people safe and organisations compliant.
Water compliance is not optional. Under UK law, Duty Holders, employers, landlords, and managing agents have a legal obligation to assess, control, and manage risks associated with water systems in their premises.
Delta Force Group delivers comprehensive water compliance and treatment services as an integral part of our Hard Facilities Management offering. Our qualified water hygiene specialists support you in meeting your legal obligations, protecting building occupants, and maintaining safe, compliant water systems.
Health Protection
Safeguarding occupants from waterborne risks
Legal Compliance
Meeting statutory and regulatory obligations
Asset Protection
Extending system lifespan and efficiency
Audit Readiness
Complete documentation and compliance records
Legal & Regulatory Framework
Our water compliance services are delivered in accordance with UK legislation, approved codes of practice, and industry guidance.
Statutory Compliance
UK legislation governing water safety
- Health and Safety at Work Act 1974
- COSHH Regulations 2002
- Management of Health & Safety at Work Regulations 1999
- RIDDOR 2013
Industry Standards
Approved codes of practice and guidance
- ACOP L8 — Legionnaires' disease: The control of legionella bacteria in water systems
- HSG 274 Parts 1–3 — Technical guidance
- BS 8580-1:2019 — Water quality risk assessment
Legionella Risk Assessment Services
A suitable and sufficient legionella risk assessment is a legal requirement for all premises with water systems. Our qualified assessors deliver comprehensive risk assessments in accordance with ACOP L8, HSG 274, and BS 8580.
- Full legionella risk assessments for hot and cold water systems
- Review and update of existing assessments
- Schematic drawings and asset registers
- Prioritised recommendations and action plans
- Duty holder support and compliance guidance
Planned Preventative Maintenance (PPM)
Scheduled maintenance programmes designed to maintain water system integrity, ensure ongoing compliance, and prevent legionella proliferation.
Monthly Temperature Monitoring
Sentinel and representative outlet temperature checks to ensure compliance with safe operating parameters.
Enquire nowQuarterly Shower Descaling
Removal of scale deposits from shower heads and hoses to prevent bacterial colonisation.
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Six-Monthly Expansion Vessel Blowdown
Scheduled blowdown of expansion vessels to maintain water quality and system efficiency.
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Six-Monthly Tank Inspection & Sampling
Visual inspection and microbiological sampling of cold water storage tanks.
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Annual TMV Servicing
Thermostatic mixing valve testing, servicing, and failsafe operation verification.
Enquire nowAnnual Tank Inspection
Comprehensive tank inspection covering structure, insulation, lids, and overflow arrangements.
Enquire nowAnnual Calorifier Inspection
Internal inspection, temperature verification, and condition assessment of hot water cylinders.
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Annual Softener Servicing
Water softener maintenance including regeneration checks and resin bed condition.
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Filter Replacement
Scheduled replacement of water filters to maintain water quality and flow rates.
Enquire nowSampling & Testing
Accurate water sampling and laboratory analysis are essential for verifying system compliance and identifying potential risks before they become problems.
Legionella Sampling
Microbiological sampling for legionella bacteria detection and quantification
Potable Water Sampling
Drinking water quality analysis for coliform bacteria and chemical parameters
UKAS-Accredited Analysis
All samples analysed by UKAS-accredited laboratories with full certification
Clear Reporting
Comprehensive reports with interpretation and recommended actions
Remedial & Corrective Works
When risk assessments or routine monitoring identify issues, our qualified engineers deliver prompt remedial works to restore compliance and protect water system integrity.
- Removal of dead legs and redundant pipework
- Pipework modifications and alterations
- TMV replacement or installation
- Flexible hose replacement
- Tank cleaning and disinfection
- Installation and maintenance of secondary biocide dosing units
- Corrective actions following risk assessments and PPM findings
Not sure who owns which tasks? Read Who does what: Duty holder vs Responsible Person.
Digital Monitoring & Advanced Technologies
Leveraging technology to enhance compliance visibility, reduce manual intervention, and provide real-time assurance across your water systems.
Online Digital Logbooks
Cloud-based compliance documentation accessible from any device, providing real-time audit trails.
Real-Time Reporting
Instant access to monitoring data, test results, and compliance status across your portfolio.
Remote Monitoring Systems
24/7 automated temperature and parameter monitoring with alert escalation protocols.
Automated Flushing
Programmable flushing systems for low-use outlets to prevent stagnation and bacterial growth.
Ice Pigging Technology
Advanced biofilm and bacteria removal using ice slurry cleaning for pipework systems.
Real-Time Compliance Visibility
Access your water compliance data anytime, anywhere. Our digital platforms provide instant visibility of monitoring results, test certificates, and compliance status across your entire portfolio.
Learn MoreWater Treatment Services
Specialist water treatment programmes for closed systems, cooling towers, and industrial boilers, delivered in accordance with industry guidance and best practice.
Closed Heating & Cooling Systems
Managed in line with BG 50 Table 1 guidelines, our closed system treatment programmes protect your heating and chilled water circuits from corrosion, scale, and microbiological contamination.
- Quarterly sampling (UKAS or on-site analysis)
- System flushing and chemical dosing
- Corrosion inhibitor programmes
- Biocide treatment for microbiological control
- Filming amine technology for enhanced protection
Integrated FM Alignment
Water compliance and treatment services are delivered as an integral part of our Integrated Facilities Management offering, providing seamless alignment with your wider FM programme.
Hard FM Integration
Aligned with M&E, building fabric, and planned maintenance programmes
Soft Services
Coordinated with cleaning and hygiene services for comprehensive protection
Centralised Compliance
Single point of contact for all compliance documentation and reporting
Operational Efficiency
Reduced complexity, improved coordination, and cost-effective delivery
Water Compliance FAQs
What is water compliance?
Water compliance is the management and maintenance of building water systems so they meet UK standards (ACoP L8 and HSG274) and control legionella risks. It combines risk assessment, temperature control, routine monitoring, and documented maintenance.
Do I need a legionella risk assessment?
Yes. Duty holders must assess and control legionella risks in any workplace or property with a water system. If you manage a building with hot and cold water services, you should have a current risk assessment and an active control scheme. Learn what’s included.
How often should we check water temperatures?
Most systems require monthly sentinel temperature monitoring, with representative outlets checked periodically and additional checks for tanks, calorifiers, and TMVs. Your exact regime depends on the risk assessment and system design.
Do you provide digital logbooks and reporting?
Yes. We provide online, audit‑ready digital logbooks with real‑time dashboards, certificates, and portfolio reporting to simplify compliance evidence.
What areas do you cover?
We operate nationwide across the United Kingdom with local technicians in all major regions. For area‑specific information, see our coverage pages or contact us.
Can you complete remedial works if issues are found?
Yes. Our engineers carry out remedials including removal of dead legs, TMV replacements, tank cleaning and disinfection, and dosing system installations to restore compliance.
Talk to Us About Water Compliance & Legionella Control
Whether you need a legionella risk assessment, ongoing water hygiene management, or specialist treatment services, our team is ready to help.