Water Hygiene Technician

Dalkia UK; Greater London; On-site; GBP 28,000 - 36,000; Full time

Benefits offered by this job

23 days holiday + birthday off

Life Assurance

Pension scheme

Private medical insurance

Employee recognition programmes

Volunteer day

Wellbeing programmes

Career portal access

Job summary

Dalkia UK at Imperial College London seeks a Water Hygiene Technician to deliver water hygiene services across a large academic estate, focusing on cooling tower compliance and maintenance. You will perform planned and reactive maintenance, keep accurate records, and guide an apprentice.

Working independently and with a small team, you will ensure safe, compliant water systems and support audits, inspections and contractor coordination across multiple campuses in London.

Qualifications

• Proven experience in water hygiene or water treatment.
• Qualified in water hygiene and Legionella control.
• Full driving licence.
• Organised and proactive with strong problem-solving and communication skills.

Responsibilities

• Complete cooling tower maintenance with sampling and chemical dosing.
• Deliver planned preventative maintenance and reactive works across water systems.
• Interpret lab results, adjust treatment and address non-compliance.
• Maintain CAFM records and compliance documentation for audits.
• Coordinate access with contractors and oversee apprentice tasks.

Skills

Water hygiene experience

Legionella control

ACOP L8 awareness

Communication skills

Record-keeping

CAFM systems

Microsoft Office

Driving licence

Education

City & Guilds Water Hygiene

L8 Awareness

Tools

CAFM software

Microsoft Office

Job description

Water Hygiene Technician

Location: Imperial College London – South Kensington, White City and Hammersmith campuses

Hours: Monday to Friday, 08:00–17:00

About The Role

Dalkia UK is looking for an experienced Water Hygiene Technician to join our team at Imperial College London. Reporting to the Water Hygiene Supervisor, you'll deliver water hygiene and treatment services across a large, complex academic estate, with a particular focus on cooling tower compliance and maintenance. You'll carry out planned and reactive maintenance across cooling towers, domestic hot and cold water systems, and closed water systems. Working independently and alongside a small team, you'll maintain accurate records, resolve technical issues and provide practical guidance to our Water Hygiene Apprentice. You'll be supporting a university through the delivery of safe, compliant and well‑maintained learning environments.

Key Responsibilities

• Complete cooling tower maintenance, including sampling three times per week, cleaning, disinfection and chemical dosing in accordance with site Written Schemes.


• Deliver planned preventative maintenance and reactive works across water systems, including temperature monitoring, flushing, sampling, outlet cleaning and chemical testing.


• Interpret laboratory results and sampling trends, adjust treatment where required, and identify and resolve defects, risks or non‑compliance.


• Maintain accurate CAFM records, water hygiene logbooks and compliance documentation to support audits and inspections.


• Liaise with specialist contractors, coordinating access, permits and risk assessments and method statements, while ensuring work meets safety and technical standards.


• Allocate and oversee apprentice tasks, providing coaching and technical guidance to support safe working and timely completion.

What We're Looking For

• Proven experience in water hygiene or water treatment, with strong practical knowledge of cooling towers, Legionella control, and hot, cold and closed water systems.


• A sound understanding of ACOP L8, HSG274, BS8580, relevant health and safety legislation, and site Written Schemes.


• Recognised water hygiene or water treatment qualifications, such as City & Guilds, Legionella Control or L8 Awareness.


• An organised, proactive approach, with strong problem‑solving and communication skills, accurate record‑keeping, and confidence using CAFM systems and Microsoft Office.


• A full driving licence.

A technical or mechanical background, experience supporting apprentices, and training in TMV servicing, system flushing or specialist descaling would further support your application.

Why Join Us?

Join a team supporting one of the UK's leading universities, where your technical expertise will help maintain safe and reliable water systems across a varied estate. You'll have opportunities to develop your skills, support an apprentice's development and progress within Dalkia UK.

Benefits

• 23 days holiday increasing with length of service, plus Bank Holidays + birthday off, + option to purchase additional 5 days


• Life Assurance


• Pension scheme


• Private medical insurance (after 1 year service)


• Employee recognition programmes which reward exceptional achievements


• Employee Referral bonus with generous bonuses for ‘referring a friend'


• The opportunity to use one working day per year volunteering to help the local community


• Flexible Benefits Scheme – including eye care voucher, store discounts for major retailers, salary sacrifice electric car vehicle lease scheme, personal IT equipment loans, impartial financial/savings guidance


• Company sick pay


• Access to wellbeing programmes


• Employee Assistance Programme - free, confidential 24/7 365 support on all lifestyle matters


• Full induction and training


• Smartphone and Tablet / laptop (where applicable for role)


• Uniform and PPE (where applicable for role)


• Access to our extensive career portal with career planner tool and online learning

Our Values

People First

It starts with health, safety and wellbeing

Better Together

A collaborative team

Trusted Partners

Dedicated to our clients' success

Taking Responsibility

Making a positive difference

Equity, Diversity & Inclusion

We're committed to an inclusive and fair recruitment process. If you need any adjustments please let us know, in confidence, our team is here to support you.