Why does my filtered water taste different or unusual?Updated 2 months ago

Why ZeroWater tastes different from other filtered water

ZeroWater removes 99–100% of dissolved solids from your tap water, including minerals like calcium and magnesium. This makes the water extremely pure — closer to distilled water than to spring water, giving it a softer, cleaner taste that's perfect for tea and everyday drinking. For people used to bottled mineral water or lightly filtered tap water, this can take some getting used to.

Pure water at 000 TDS is sometimes described as "flat", "metallic", or "empty". This is not a defect — it's the water without anything in it.

A sour or lemony taste

If you notice a sour or lemony taste, it usually means your filter is almost used up. Check your TDS meter:

• If it reads 006 or higher, it's time to replace the filter.
• If it reads 001 but the taste is already off, consider replacing the filter a bit earlier.
• Once you reach a reading of 001, we recommend testing after each refill so you catch the right moment to replace it.

A fishy, sulphur, or unpleasant taste

This usually means the filter is at the end of its life or has been used beyond its capacity. Test your filtered water with the TDS meter:

• If it reads 006 or higher, replace the filter. An overloaded filter can release previously captured contaminants back into the water.
• If it still reads 000–005, the taste may be coming from a contaminated pitcher. Clean the pitcher thoroughly — see our cleaning guide.

My new filter makes the water taste unusual

A brand-new filter can occasionally produce a slightly unusual taste in the first few uses. This is harmless and will settle naturally. If the taste persists after several fills, please contact our customer service team — we're happy to help.

Still not right?

Please contact our team with your TDS reading and a description of the taste — we'll help diagnose the issue.