Water Tank Cleaning & Disinfection for London properties
Cold water storage tanks collect sediment, scale, debris and sometimes insects or vermin. That material feeds biofilm and gives legionella somewhere to grow. If an inspection finds contamination, the tank should be cleaned and disinfected. We carry out the work with minimal disruption and issue a certificate when it is done.
Cold water storage tanks in London are often found in roof spaces and plant rooms of dense mix of Victorian conversions. Local water is hard to very hard, which affects how quickly sediment and scale build up in tanks and how often cleaning is needed.
From mansion blocks in Kensington to new-build towers in Stratford and serviced offices in the City, London has some of the most varied water systems in the country. Tall residential buildings often rely on booster pumps, break tanks and long risers, so keeping cold water below 20°C and hot water circulating properly on upper floors takes careful design and monitoring.
What is included
- Pre-clean inspection and photographs
- Isolation and drain down
- Removal of sediment, scale and debris
- Chlorination and contact time verification
- Flushing, refilling and post-clean sampling where required
- Certificate of disinfection
- Recommendations or upgrades for lids, screens, insulation and overflows
How often
Tanks should be inspected at least annually. Cleaning and disinfection is carried out when inspection shows it is needed, rather than on a fixed timetable.
Legislation in England
In England, legionella duties come from the Health and Safety at Work etc. Act 1974, the Management of Health and Safety at Work Regulations 1999 and COSHH 2002, with HSE's ACoP L8 and HSG274 setting the standard. Enforcement is by HSE or the local authority, depending on the premises.
In London, legionella law is enforced by the London borough councils and the City of London Corporation's environmental health team for offices, shops, hotels, restaurants and leisure premises, and by HSE for factories, warehouses, hospitals, schools and council-run premises. We cover all E, EC, N, NW, SE, SW, W and WC postcodes in and around London.
Frequently asked questions
How much does water tank cleaning & disinfection cost in London?
Prices depend on the size and complexity of the property. A single rented home is a short visit, while a large commercial building may take a day or more. Send us the details and we will give you a fixed price for London with no hidden extras.
How quickly can you carry out water tank cleaning & disinfection in London?
Get in touch with your postcode and preferred dates and we will confirm the earliest available appointment in London.
How often should water tanks be cleaned?
Tanks should be inspected at least annually and cleaned and disinfected when the inspection shows sediment, debris or contamination, rather than on a fixed timetable.
Will the water be off during tank cleaning?
Usually only for a few hours. Where water must stay on, we can arrange temporary bypasses or work out of hours.