Can bacteria grow inside a ZeroWater filter?Updated 2 months ago

Can bacteria grow in the filter?

ZeroWater filters are not designed to remove bacteria or viruses — they are designed to remove dissolved inorganic solids. In theory, bacteria present in tap water could pass through the filter, and in some conditions, bacteria could colonise the filter media if the filter is used beyond its lifespan or the pitcher is not kept clean.

How to minimise the risk

• Replace your filter on time. Replace when your TDS reading reaches 006. An overloaded filter is more susceptible to bacterial growth.
• Store the pitcher in the fridge. Cold temperatures significantly inhibit bacterial growth. Filtered water should be consumed within 2–3 days if stored at room temperature, or up to a week if refrigerated.
• Clean the pitcher regularly. Wash the pitcher body and reservoir at least monthly. See How do I clean my ZeroWater pitcher?
• Don't leave water sitting too long. Don't fill the pitcher and leave it unused for extended periods.

Is tap water in the UK/EU safe from bacteria?

Yes — tap water in the UK and EU is treated to be microbiologically safe before it reaches your tap. Bacterial contamination in tap water is extremely rare. ZeroWater's filtration removes the chemical and dissolved solid concerns; the microbiological safety of European tap water is handled at the treatment level.

Questions?

If you have specific concerns about water quality in your area, your local water authority can provide water quality reports. For questions about your ZeroWater product, contact our team.