Industrial and commercial water treatment

Every day, we help manufacturers, commercial businesses, public organisations, institutions, FMs and maintenance companies look for better ways to perform strategic, non-core processes managing water, water and air hygiene and ACoP L8 compliance.

WCS Group is the leading water treatment, waste-to-energy, water re-use, wastewater and water hygiene specialist helping customers more effectively manage water systems (heating, cooling), blending, supplying and managing chemicals, cleaning and maintaining critical plant and equipment. We ensure clean, safe water, fresh air and exacting hygiene. We extend service life. We enhance operational efficiency. We help customers manage Legionella risk, conserve energy, reduce water use and maximise safety responsibly and predictably with measurable results.

WCS Regional offices map

Our services

Water treatment used to be a ‘dark art’ specifying and administering chemicals to control scale, corrosion and bacteria. It still can be, but today, it is so much more too. WCS Group provides the following services:

  • Design, Build, Monitor, Maintain
  • Audit, Test, Monitor, Service, Maintain
  • Chemical Supply & Management Services
  • Operational Improvement Water Engineering
  • Whole of Lifecycle Water Management
  • Training and ACoP L8 Compliance
  • Water Purification and Secondary Disinfection
  • Risk Assessments - Water Hygiene, Legionella, Asbestos, Noise
  • Remote Monitoring, Asset Tagging and System Management
  • Closed System Monitoring and Improvement

Our Risk Management

Most customers are looking to manage risk, safety, financial cost, operational downtime and improve running efficiency while maintaining uncompromising compliance. They turn to us for:

  • Reliability – they want predictable improvements to operations, production and hygiene
  • Compliance – uncompromising, exacting and full HSE compliance (to law, best practice and in spirit)
  • Cost effectiveness – processes must be justified, advanced, tech-enabled if possible to deliver system improvements and enhanced economics and environmental impact
  • Independent risk assessment - full asset, building and operating risk of water hygiene, Legionella, fire, asbestos and noise in accordance with UK law and established regulations
  • Compliance. Assured - our risk assessments are not a tick-box exercise. Specially trained, dedicated experts work nationally organised through local teams evaluating over 2 million assets

Areas of Expertise

Water Treatment (heat transfer applications)


Raw water treatment


Water softening

Reverse Osmosis

Water recovery / recycling / reuse

Ion exchange / demineralisation

Specialised water treatment





Dosing Pumps

Brominators, Tanks, bunds etc.

Water Meters, solenoid valves

Controllers (including WebMaster)

- Conductivity

- pH/ORP

- Boiler

- Disinfection



Site Survey

Risk Assessment

Testing and analysis

Legionella Analysis (including Rapid Assay)

Corrosion monitoring

LSI and scale monitoring

Biocide Sensitivity Testing

Cooling Tower cleaning and descaling


Liquid and Solid chemistry

Corrosion Inhibitors

Scale Inhibitors



Water Treatment (other applications)

Thermal / evaporative system management

Pool Treatment

Effluent treatment

Solids handling / dewatering

Aerobic biological treatment

Water Hygiene

Legionella Risk Assessment and Water Hygiene Surveys

Monitoring, Inspection and Log Book management

Remote temperature monitoring

Sampling and analysis

Cleaning and disinfection works

Air Hygiene

Indoor Air Quality Monitoring

Comfort factors (Temperature, Humidity, Airflow

Airborne Particle counts

Airborne Bacteria and Fungi

Gases (Carbon dioxide and others as appropriate)

Risk Assessment and Site Surveys

Cleaning and Treatment of Air Handling plant / equipment

Kitchen Extract cleaning

Water Hygiene

Design and specification for water system management


Refurbishment and extension of service life

System improvement




Ofqual - Combined Hot / Cold Water Systems and Cooling Towers, Legionella Control, L2 Waterborne Infections in Healthcare Standard water

WCS Group courses - COSHH Awareness, Emergency First Aid, Legionella for Managers, Legionella for Everyone, Legionella Combined, Legionella for Cooling Tower Operators, UKATA CAT A Asbestos Training

On-site training tailored to your site(s)

Water Treatment 60 sec Overview ebook cover

Water Treatment 60 second overview

What control improvement looks like, who we work for and what you can expect