FAQs / Sanitisation

• Why do water dispensers need to be sanitised?

  In most cases, the correct term for what is required is cleaning, not sanitisation. Mains-fed (point-of-use) water dispensers do not typically require full disinfection or sanitisation, provided they are used in environments where the water supply is already potable. Regular cleaning—particularly of external surfaces and key user contact points—is essential for maintaining hygiene and optimal performance.

  The term “sanitisation” originated in the United States and is generally associated with disinfection protocols for bottled water coolers, where bottled water is classified as a food product. As such, these systems are expected to follow stricter cleaning regimes.

  Point-of-use (POU) water dispensers were developed as a cost-effective and environmentally sound alternative to bottled dispensers in regions with safe, reliable mains water. Modern dispensers, like those manufactured by Borg & Overström, are designed as sealed systems, making internal cleaning impractical. Instead, periodic flushing with an appropriate cleaning solution is recommended to help maintain internal cleanliness.

  Our products are not designed for use with non-potable water. If a customer chooses to use water from an untreated or marginal source, a suitable upstream water treatment system—such as reverse osmosis—must be in place. These systems are commonly found in areas without access to regulated potable water and may require separate maintenance protocols.

  It is important to note that regulated drinking water can degrade over time, especially in low-use scenarios. However, when potable water is used in conjunction with equipment made from certified, hygienic materials, the risk of contamination is significantly minimised.

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• What is the recommended frequency for cleaning or sanitisation, and why?

  Cleaning frequency should be determined by the operator based on the environment, usage, and a general risk assessment. A good practice is to carry out internal cleaning at the same time the filter is replaced. Filter life is set by the filter manufacturer and is usually based on total water volume processed.

  The industry norm for POU dispensers is a 6-month interval. This recommendation is based on guidelines established by trade associations in the absence of specific regulatory standards. However, in high-usage or high-risk environments, more frequent cleaning may be necessary.

  For bottled water dispensers, the standard cleaning frequency is every 3 months.

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• What sanitising agents are recommended and why?

  The preferred sanitising chemical is food grade hydrogen peroxide (H₂O₂ 3%). This agent is effective against a broad range of bacteria, leaves no harmful residues, and is safe to use at low concentrations. It is also relatively stable when stored correctly, making it a reliable option for regular use.

  Other chemicals, such as diluted bleach solutions (e.g., sodium hypochlorite), are sometimes used but carry higher risks. Chlorine-based cleaners can degrade plastics and internal components, especially in complex systems. Additionally, they require meticulous rinsing to prevent harmful residue, making them less suitable for modern dispenser systems.

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• Where can the recommended sanitising chemical be obtained?

  Hydrogen peroxide and other appropriate cleaning agents are widely available from suppliers of commercial and industrial cleaning products. Distributors often already have relationships with such suppliers, making sourcing straightforward.

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• Why doesn’t Borg & Overström supply sanitising chemicals directly?

  Borg & Overström focuses on the manufacture and distribution of premium water dispensers. As a trade supplier, we do not maintain an extensive range of cleaning chemicals because:

  • Most of our distributors already source cleaning materials from specialist providers.
  • The sale and distribution of chemical-based products are increasingly regulated, limiting our ability to supply such products outside of the UK in a viable or compliant way.

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• What are the risks of using non-recommended cleaning agents?

  Using unsuitable chemicals can negatively impact both the function and longevity of the unit. Potential risks include:

  • Damage to internal components (especially plastic or silicone parts)
  • Adverse effects on water taste or odour
  • Potential health risks due to chemical residues
  • Overall product failure

  These risks are influenced by several factors including chemical composition, concentration, exposure time, and environmental conditions.

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• Does the use of non-recommended chemicals affect the product warranty?

  Yes. The use of non-approved cleaning agents will invalidate the manufacturer’s warranty. It is essential that only recommended chemicals and processes are used to maintain warranty coverage and to safeguard equipment performance.

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• What is the correct cleaning procedure for external components (e.g., drip trays, nozzles, panels)?

  External components should be cleaned regularly using a soft cloth with warm water and a mild detergent. Drip trays, dispensing nozzles, and touch panels are high-contact surfaces and should be disinfected more frequently, particularly in shared or high-use environments. Avoid abrasive materials or aggressive chemicals that could damage surfaces or labels.

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• Can sanitisation be carried out by the end user, or should it be performed by trained service personnel?

  While external cleaning can be managed by the end user, internal cleaning and sanitisation should only be carried out by trained technicians. This ensures that approved chemicals are used correctly, that all internal pathways are properly flushed, and that no damage is caused to sensitive components.

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• Are there visual signs that indicate a unit may need cleaning or maintenance?

  Yes. Indications include:

  • Discolouration or staining on external surfaces
  • Build-up in the drip tray or nozzle area
  • Changes in water taste or odour
  • Reduced water flow or dispensing performance

  These signs should prompt immediate cleaning or further inspection to prevent service issues.

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• What are the safety precautions when handling cleaning agents?

  Operators should:

  • Wear protective gloves and eye protection when handling chemicals
  • Follow all manufacturer safety data sheet (SDS) instructions
  • Store chemicals in clearly labelled containers, away from food and drink
  • Ensure proper ventilation during use
  • Thoroughly rinse internal components after use, if required by the chemical

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