
If a cold water tank in Bradford is dirty, oversized or has not been looked at for a long time, a clean and disinfection puts it right and gives you the paperwork to prove it.
Water Hygiene Services is an independent Legionella control company based in Leeds, about 10 miles from Bradford. We clean and disinfect cold water tanks for estates managers, facilities managers and building and property managers in Bradford.
What is a cold water tank clean and disinfection?
A tank clean removes sediment, scale, rust, sludge and biofilm from the inside of a cold water storage tank. The tank is then disinfected using an approved method and contact time, so bacteria levels fall and the stored water is safe to use. We work to HSG274, supporting ACoP L8.
Cleaning and disinfection are linked but not the same. Cleaning removes physical contamination, and disinfection treats the tank and the system afterwards. In most cases both are needed, because disinfecting a dirty tank does not last. For the full detail, see our Tank Cleaning and Disinfection page.
- Visible dirt, sediment or sludge in the tank
- Rust staining
- Damaged lids or missing insect screens
- Stale or discoloured water
- Poor microbiological results
- A tank that has been unused, repaired or altered
- A risk assessment that recommends cleaning
Tank cleaning in Bradford
Yorkshire Water supplies the area. Larger housing blocks often have roof tanks that serve many flats and need planned access.
We clean tanks in:
- Large housing stock managed by housing associations and landlords, including blocks with communal systems
- Care homes, nursing homes and supported living
- Schools, colleges and the university
- The hospital and GP practices
- Older mills and warehouses now used by businesses and for storage
How a tank clean is carried out
- We plan the work with you so the tank can be isolated and drained safely.
- The tank is drained and cleaned inside, removing sediment, scale, rust, sludge and biofilm.
- We check the condition of the lid, screens and fittings, and note any defects.
- The tank and system are disinfected using an approved agent and contact time.
- The system is flushed and returned to service.
- You receive a job sheet and certificate, and notes on any defects found.
Questions we are asked in Bradford
Our block has a roof tank serving many flats. How is the clean planned?
We agree access and any shutdown with you and the managing agent in advance.
How often should a tank be cleaned?
There is no single frequency for every tank. HSG274 expects tanks to be inspected regularly, and cleaned and disinfected where inspection shows it is needed.



