How long does a ZeroWater filter last?Updated 2 months ago
How long your filter lasts depends on your tap water
This depends on the TDS value of your tap water (you can measure this using your TDS meter). The TDS value indicates the level of dissolved solids present in your tap water — the higher the TDS, the faster the filter will need to be replaced.
Check the TDS value of your tap water, then use the table below to see roughly how much water you can filter with each ZeroWater filter:
| Tap water TDS | Pollution level | Capacity per filter |
|---|---|---|
| 000–001 | Clean water | – |
| 002–050 | Low pollution | 150+ litres |
| 051–200 | Average pollution | 100–150 litres |
| 201–300 | High pollution | 50–100 litres |
| 301–400 | Very high pollution | 30–50 litres |
| 401+ | Extremely high pollution | Under 30 litres |
Because filter life comes down entirely to your tap water’s TDS, the same filter can last very differently in different places — even with identical use. A filter that lasts several months at home on low-TDS tap water could fill up in just a few weeks somewhere with much higher TDS, such as while on holiday. Always check the TDS of the water you’re filtering rather than assuming it’ll last as long as it does at home.
More information
For how to know exactly when to replace your filter, see When should I replace my ZeroWater filter?