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Water Treatment Engineer

Effective Recruitment Solutions Ltd
London · posted 21 August 2026
Salary
£36,000 – £40,000 a year
Job type
full time
Location
London, London
Category
Construction
Water Treatment Engineer Water Treatment Engineer. We are looking for an experienced Water Treatment / Water Hygiene Engineer to join a growing building services business, covering sites across London and the South East. This is a mobile, hands-on position carrying out planned maintenance, water hygiene, treatment and remedial works across a range of commercial properties, schools and council buildings. The Role As a Water Treatment Engineer, you will be responsible for: Carrying out PPM works in accordance with ACOP L8, HSG274 and SFG20 Delivering Legionella control and water treatment services Servicing and maintaining water softeners, filtration units, TMVs and dosing equipment Carrying out closed-system analysis, dosing and flushing Maintaining cooling towers and associated equipment Testing and maintaining ClO2 equipment Carrying out site audits and ensuring water hygiene logbooks are accurate and up to date Identifying and completing remedial works Carrying out site surveys of domestic water services where required Assisting with the installation, servicing and commissioning of water treatment equipment Assisting with water tank repairs, replacements and chlorination Liaising with the Help Desk regarding planned maintenance works Ensuring COSHH documentation and site records remain compliant What We're Looking For You should have previous experience working within water treatment and/or water hygiene, with a good understanding of: ACOP L8 HSG274 Legionella control Water treatment systems TMVs Closed systems Dosing and flushing Water hygiene compliance A City & Guilds qualification in Risk Assessment, Water Treatment or similar is desirable. Plumbing or mechanical engineering qualifications and knowledge of HTM 04-01 / HTM 01-05 would also be beneficial but are not essential. You must hold a full UK driving licence. Package £36,000 - £40,000 depending on experience Company van Company phone 40-hour permanent contract Up to 25 days holiday + bank holidays Pension scheme Ongoing training and career progression If you're an experienced Water Treatment or Water Hygiene Engineer looking for a permanent mobile position covering London and the South East, please apply today
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