Posting Date - 21 Aug, 2026

Job advert – Water Treatment Engineer

Job title: Water Treatment Engineer

Location: Mobile role covering London and the surrounding home counties

Salary: £28,500 – £32,500 per year (depending on experience)

Hours: Full-time, Monday–Friday, 08:00–17:00 (1‑hour lunch)

About Evolution Water Services

Evolution Water Services Ltd is a market leader in the water treatment and air hygiene industry, providing high‑quality water treatment, water hygiene, consultancy and legionella training services throughout the UK. We work across hospitals, commercial and industrial sites, and large education estates, delivering safe, compliant and reliable water systems for our clients.

The role

As part of our ongoing expansion programme we have a requirement to recruit Water Treatment Engineers to join our existing team. The role would suit someone who has good communication skills, is ambitious and keen to improve their existing knowledge and capabilities with aspirations to further their career.

Responsibilities

  • Closed system chemical dosing (Using powered and hand dosing rigs and dosing pots)
  • CWS Tank inspections
  • CWS Tank and down service clean & chlorination works
  • Cooling tower clean and chlorination works
  • Mains Chlorination’s
  • Calorifier inspection’s
  • Collection of samples from domestic water systems and submission for laboratory analysis
  • TMV maintenance
  • Chlorine dioxide analysis

Experience

Candidates should have a minimum of 2 years’ experience in a Water Treatment Engineers role. A full driving licence is required.

About you

  • At least 2 years’ experience in water hygiene or water treatment, carrying out similar tasks.
  • Good communication skills, with a positive, professional manner on client sites.
  • Keen to learn, develop your technical skills and progress your career.
  • Comfortable working independently in a mobile role.
  • Full UK driving licence (essential).
  • Based within a commutable distance of London and happy to travel across London and surrounding home counties.

What we offer

  • Salary £28,500 – £32,500, depending on experience.
  • Company vehicle for work use.
  • Company pension scheme.
  • Private medical insurance.
  • Referral programme.
  • Extensive training and development, with opportunities to broaden your skills in water hygiene and treatment.

If you have solid water hygiene experience and are looking to join a growing, specialist company with strong training and benefits, we’d love to hear from you.

Phenna Group is an Equal Opportunities Employer

How To Apply

Click the 'Apply Now' button below and submit your CV.

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