About the Role Our client is seeking a proactive Water Treatment Engineer to support the delivery of water hygiene and treatment services across multiple sites in Central London. Reporting to the Water Treatment Consultant, the role involves carrying out routine monitoring, testing, inspections, and maintenance to ensure compliance with water hygiene standards and client requirements. The position will be based from the Head Office with daily travel to various sites. Key Responsibilities Carry out closed circuit sampling, analysis (mini-lab/photometer), and chemical dosing. Conduct domestic water sampling, CWST inspections, and softener testing. Perform TMV testing and servicing, chlorine dioxide testing, and cooling tower dosing equipment servicing/repairs. Undertake sidestream filter inspections and changes. Manage transportation of samples to laboratory drop-off points (Moorgate). Complete logbook inspections, audits, job sheets, and maintain accurate records. Enter laboratory data into Excel trending sheets for analysis. Collaborate with site teams and ensure tasks are carried out in line with compliance requirements. Qualifications: NVQ Level 2/3 in Plumbing, Water Treatment, or a related discipline (preferred). Legionella awareness training or equivalent (desirable). Full UK driving licence (required for site travel). Experience: Previous experience in water treatment, water hygiene, or building services maintenance. Strong knowledge of closed system water treatmen