Water Treatment Engineer/Plumber

An industry-leading building services provider is looking for a skilled Mobile Water Treatment Engineer to join their growing team, covering sites across London and the M25. This is an excellent opportunity for someone with a strong water treatment background who enjoys a varied role across multiple commercial environments.

Please note our client is looking for an engineer who has good plumbing skills to be considered for this role.

Water Treatment Engineer/Plumber Key Responsibilities

• Manage and maintain water treatment systems across a portfolio of sites.
• Carry out water sampling, testing, and analysis to ensure compliance with Legionella regulations.
• Implement and maintain water treatment programs to control scale, corrosion, and biological growth.
• Perform routine inspections, cleaning, and chemical dosing on cooling towers and closed systems.
• Diagnose faults and resolve technical and operational issues on-site.
• Ensure accurate record-keeping and full compliance with ACOP L8, HSG274, and relevant legislation.
• Provide reports and technical updates to management and clients.

Water Treatment Engineer/Plumber Experience & Skills Needed

• Proven hands‑on experience in water treatment, including cooling towers and closed‑loop systems.
• Strong knowledge of Legionella control and water hygiene best practices.
• Ability to troubleshoot and resolve water system and quality issues.
• Comfortable working independently across multiple sites.
• Strong communication and reporting skills.

Water Treatment Engineer/Plumber Requirements

• Recognised water treatment qualifications (e.g., City & Guilds, NVQ, or equivalent).
• Solid understanding of water hygiene regulations including ACOP L8 and HSG274.
• Good plumbing skills.

Water Treatment Engineer/Plumber Offer

• £38,000 – £42,000 per annum.
• Monday to Friday working hours.
• Mobile role covering London and the M25.
• Company vehicle and fuel card.
• Excellent job security with a reputable and growing business.
• Clear progression opportunities and ongoing training.

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