Senior Water Treatment Technician

HSL Compliance Limited.; Cambridge; On-site; GBP 40,000 - 60,000; Full time

Job summary

A leading compliance specialist in the UK is seeking a Senior Water Treatment Technician to travel to various sites for water treatment services. Responsibilities include servicing and testing water systems, installation of chemical dosing units, and ensuring compliance with safety regulations. Candidates should possess a full UK driving licence, strong work ethic, and relevant water treatment qualifications. The role offers comprehensive training, career development, and benefits including paid overtime and annual leave.

Benefits

Paid overtime

22 days annual leave + bank holidays

Company pension scheme

Employee wellbeing support

Discounts with retailers

Qualifications

• Must have a full UK driving licence.
• Reliability and strong work ethic are essential.
• Experience in water treatment required.
• Mechanical/electrical aptitude for fault finding is necessary.

Responsibilities

• Travel to various sites using a company vehicle.
• Servicing and testing of closed systems.
• Performing steam boiler water treatment.
• Installation and servicing of chemical dosing units.
• Maintaining filtration and UV systems.

Skills

Full UK driving licence

Strong work ethic

Customer service skills

Water treatment qualifications

Knowledge of Legionella guidance

Mechanical/electrical aptitude

Job description

HSL Compliance

Job Title: Senior Water Treatment Technician

Location: Cambridgeshire, Suffolk and surrounding areas

Hours: Full-Time – 40 hours per week

Contract Type: Permanent

Salary :£17.31per hour

Start Your Career with HSL Compliance

Looking for a hands‑on role where every day is different? At HSL Compliance, we’re looking for motivated individuals with a positive attitude, good work ethic, and a full driving licence to join our team.

What You’ll Do

• Travel to various sites each day (company vehicle provided after training)
• Servicing, testing and dosing of closed systems (e.g., heating/chilled water), including sampling, analysis and corrective actions
• Steam boiler water treatment, including routine testing, blowdown advice, chemical control and troubleshooting (where within role scope)
• Installation, commissioning, servicing and fault‑finding of chemical dosing units, including (but not limited to):
  • Chlorine Dioxide (ClO₂) systems
  • Silver Stabilised Hydrogen Peroxide systems
  • Ultralox and other disinfection/dosing technologies
• Servicing and maintaining filtration systems (cartridge changes, bag filters, strainers, backwash filters, differential pressure checks, etc.)
• Servicing and performance checks on UV systems (lamp changes, quartz sleeve cleaning, intensity/alarm checks)
• Servicing, monitoring and basic fault finding on RO (Reverse Osmosis), DI (Deionisation) and associated treatment equipment (pre‑treatment, membranes/resins, instrumentation, output verification)
• Completing on‑site documentation, test records and reports accurately and on time
• Ensuring compliance with relevant guidance, safe systems of work, and COSHH when handling chemicals
• Liaising with clients, account managers and internal teams to plan remedial actions and follow‑up works
• Maintaining equipment, stock, calibration where applicable, and good housekeeping within the vehicle and on site

What We’re Looking For

• A full UK driving licence (essential)
• Reliability and strong work ethic
• Confidence to work independently once trained
• Good communication and customer service skills
• Willingness to learn and develop new skills
• Ability to follow processes and work safely
• Water treatment qualifications / training and experience (Essential)
• Knowledge of Legionella guidance and water safety best practice (Essential)
• Mechanical/ electrical aptitude for pump, controller and instrumentation fault finding (Essential)

Why Work for HSL?

• Full training and clear career development pathways
• Opportunities to gain industry‑recognised qualifications
• Paid overtime (including travel time from leaving home)
• 22 days annual leave + bank holidays
• Option to take 3 additional unpaid leave days
• Company pension scheme & sick pay scheme
• Free eye test every 2 years
• Access to Kinhub (wellbeing & financial support)
• Discounts with hundreds of retailers via Reward Gateway

About Us

HSL Compliance is one of the UK’s leading compliance specialists, helping organisations keep people safe. We work with local authorities, housing associations, and businesses across the country, providing water safety, fire safety and other essential compliance services.

Our people are at the heart of what we do. We support our employees to grow, succeed, and enjoy a secure future with us.

Ready to Apply?

If you’re reliable, motivated, and looking for a role with variety, stability and progression, we’d love to hear from you.

👉 Apply online today with your latest CV.