+971 50 8565570 info@nortex.ae

Water Tank Cleaning & Disinfection


Contaminated water can cause serious health complications. Debris and other contaminants can build up inside the water tanks and the distribution system over time, which creates the perfect breeding environment for bacteria such as Legionella, as well as a variety of other water-borne diseases. All water tanks and the associated pipelines must be regularly inspected, maintained, cleaned and disinfected in line with local and International standards.

Why clean the water tanks?

It is a fact that unhealthy water is the one of the leading cause of death around the world along with alcohol consumption and cigarette smoking.  Most of us do not take the trouble of getting our water tanks cleaned periodically which can prove fatal.  Even if we use filtered water for drinking or cooking purpose, there are many instances where we use unfiltered water such as for washing yourselves, brushing your teeth etc and hence we do consume it in some way or the other.

Nortex provides cleaning and disinfection for all sorts of residential and commercial water tanks and pipelines.  We follow local as well as international guidelines like Dubai Municipality Local Order 61/1991, BS 6700 Domestic Water Storage Tank Hygiene (UK) & HS (G) 70 Prevention of Legionella (UK). We use Dubai Municipality approved chemicals to ensure a superior level of hygiene, stripping of layers of bio-film known to harbor the legionella bacteria, whilst being safer, environmentally friendly and better value for money.

Dubai Municipality Guidelines for Control Legionella in Water Systems

  • Water systems have to be kept clean to reduce the nutrients available for bacteria growth. Regular visual inspections should be made at least every month to avoid the build-up of dirt, organic matter or other debris.
  •  All water systems which create a water spray or aerosol, and Spa pools must be treated and maintained to minimize the risk of Legionella bacteria contamination. Along with any disinfection methods of treatment used, the following are recommendations to reduce of the incidence Legionella contamination within domestic plumbing (hot and cold) water systems:
  • Water systems (hot & cold water) must be flushed with water of not less than 70 °C for 5 minutes (minimum of 60 °C) measured at the outlets. Or
  •  Treated with chlorine to provide minimum free chlorine residual of 1-2 mg/l at all outlets.

Inspecting and cleaning a (hot and cold) water system

  1. Water systems (hot & cold water) must be flushed at least every six months with water of not less than 70 °C for 5 minutes (or an equivalent temperature/time combination) or treated with chlorine to provide minimum free chlorine residual of 1-2 mg/l at all outlets.
  2. Reduce dead legs (stagnant lines and stubs) in the system,
  3. Clean and inspect hot water tanks regularly – annually as a minimum,
  4. Continually run hot water circulation pumps – avoid recycling to mixing valves only,
  5. Store hot water at a minimum temperature of 60 °C (140 °F) and deliver to the taps at a minimum temperature of 50 °C (122 °F),
  6. Store and distribute the cold domestic water below 20 °C (68 °F) – if not possible , then consider monitoring of Legionella and using a disinfection system if Legionella are not under control,
  7. Flush the entire water system on a regular basis (at least quarterly),
  8. Consider routine treatments – including the use of approved biocides.

Call Us Today

Nortex represents compassion, reliability & loyalty. We are a specialised cleaning services company comprising of professional staff with over 10 years of experience in UAE.

Nortex have a mission to be Dubai's most respected service brand. Our aim is to carry out all types of cleaning services with utmost professionalism and sincerity. 

We strive to establish a culture that supports our team members, so they can provide exceptional service to our customers.

  • Industry Expert
  • Fast & Professional
  • Experienced
  • Flexible Pricing
  • Satisfaction Guaranteed

Reach Us Today


+971 50 8565570