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EWG's Tap Water Database

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Maintaining Your Water Filter

The amount of money and effort that you'll need to spend in order to keep your water filter in top working order is an important consideration when making your purchase. Installing the filter is only the first step. All water filters require regular cartridge replacement and/or other maintenance in order to continue removing contaminants from your tap water.

Always consult the user manual before replacing a filter cartridge or cleaning your system. Here are four more things you need to know:

1. Filter cartridges have a lifespan.

2. When cartridges reach their capacity, you should replace them.

3. Dirty or old cartridges might reduce your water flow rate.

4. Reverse osmosis filters and water softeners require special maintenance.