FAQs

TDS meter:

Want to test your water before purchasing a filter jug?

    - 90-Day Test Period: for just £5 (with free delivery), you can get a TDS meter to check your water quality for up to 90 days

    - Risk-Free Purchase: if you decide to buy a filter jug or dispenser, we’ll refund the cost of your TDS meter by giving you a £5 discount on your order

    - Money-Back Guarantee: if you don’t need a filter jug or change your mind, simply return the meter for a refund (you just cover the return postage). Contact us at orders@theprinciples.co.uk to get the correct returns address for this item

     

    Top Questions:

    How is ZeroWater different from other brands? 

    • Advanced Filtration: While most conventional water filters use 2-stage filtration, ZeroWater employs a patented 5-stage filter systemSuperior Technology: ZeroWater filters utilize Ion Exchange Technology, unlike simple carbon-only filters
    • Unmatched Purity: ZeroWater removes virtually all (99.6%) detectable dissolved solids, whereas leading brands remove only up to 50%

    How long will the ZeroWater filter last? 

    When do I change the filter? 

    When the TDS meter reads "006", it's time to change the filter. It is strongly recommended that the reading not go past that point. Unlike conventional filters, ZeroWater will show a noticeable difference in taste or smell, indicating it’s reached the end of life

    How often should I measure the TDS level in my water?

    Use the provided TDS meter to regularly test your water, ideally every other day, especially if you have high TDS levels (over 300). By using the TDS meter to frequently measure your filtered water, you will know it is time for a filter change before it has gone too far past 006

    Do ZeroWater products contain BPA?

    All ZeroWater products are BPA-Free

    How fast should my water run through the filter?

    Due to its comprehensive 5-stage filtration, water filtration is slightly slower but far more effective than 2-stage filters. It also depends on the TDS level of your water, for example our water has a TDS of 025 and our ZeroWater jug can filter 1.7L in approx. 20 minutes.

    Does a ZeroWater filter reduce the pH of water?

    ZeroWater doesn't change the pH levels of your water. Under extreme filter exhaustion, pH reduction may occur but is not harmful. It’s best to replace the filter upon exhaustion

    Where can I recycle used ZeroWater filters?

    Most Household Waste & Recycling Centres in the UK accept used filters for recycling. Filters should be disposed of in the plastic recycling skips and will then be reprocessed and turned into other products such as garden furniture. Please also check with your local authority first

     

    Reasons to choose ZeroWater:

    UK tap water is drinkable, so why do I need a ZeroWater filter?

    Even well-treated tap water can pick up chemicals along its way from the treatment plant to the tap (or from pipework in your home). This is what gives tap water that typical taste. ZeroWater offers crisp, refreshing water by removing these contaminants

    What does the ZeroWater filter remove?

    Click here to view a list of contaminants removed by ZeroWater, and 6 reasons why you should filter your water 

    Is it bad to remove all TDS?

    Current filtering technologies can’t distinguish between harmful chemicals and beneficial minerals, so it removes all of them. Many nutritionists recommend that you receive essential vitamins and minerals from a well-balanced diet, and not necessarily from water alone

    ZeroWater vs. bottled water

    ZeroWater filters deliver purified-quality water at as little as 10p per litre, without the plastic waste

    ZeroWater vs. Reverse Osmosis (RO)

    ZeroWater matches the purity of RO systems without the need for plumbing installation or water wastage

    ZeroWater vs. Distilled water

    Unlike the energy-intensive and lengthy process of distillation, ZeroWater uses Ion Exchange for crisp, refreshing water

     

    Troubleshooting: 

    Flow rate: my filter/jug/dispenser takes too long to filter

    The water travels through 5 stages in order to bring your water down to 000 TDS. Most other water filters use only 1-2 stages which is why their water can't reach 000. Slow flow indicates effective contaminant removal

    Why can't I get a "zero" reading on my TDS meter? 

    Ensure the filter is threaded correctly and fully seated to prevent contamination. Check that the blue rubber O-ring is in place

    Why is my TDS meter/indicator not working? 

    Press the on/off button. If the screen shows no reading, replace the batteries (2 x 357A or 2 x LR44)

    Why does my filtered water taste acidic or fishy? 

    This taste indicates the filter has reached the point of exhaustion and must be replaced

    My new filter arrived wet/with condensation in the bag

    The carbon inside the filter is rinsed with purified water before it is packed. Sometimes, this can cause condensation inside the bag/lid, which is harmless