For new parents · formula feeding
Your formula is only as clean as the water you mix it with.
Every bottle you make up is mostly tap water. Babies drink an enormous amount for their size, and their systems are still developing, so they have the least tolerance for what's in it. Boiling kills the germs, but it doesn't remove forever chemicals, microplastics or lead.
The routine you already have down
You sterilise everything that touches the bottle. Not what goes in it.
By week two you've got the whole ritual memorised, half of it done one-handed at 3am. Look how careful you already are.
Your bottle-making routine
- Sterilise the bottles & teats
- Boil the kettle
- Cool to the right temperature
- Level, correct scoops
- Wash your hands first
- Check the use-by on the tin
Every step protects against germs. Not one of them touches the chemicals dissolved in the water itself.
The thing boiling can't fix
Boiling was never the whole answer.
Boiling kills bacteria, and that matters, which is exactly why NHS guidance says to make up feeds with water boiled and cooled to no less than 70°C. But heat does nothing to the contaminants that worry parents most, and infants are the group least able to cope with them.
- Forever chemicals aren't removed by boiling, and official guidance flags developmental effects in infants and children as a concern.
- Lead can leach from older pipes and fittings, and there is no known safe level for a baby. Boiling can actually concentrate it.
- Microplastics pass straight through the kettle, and have now been detected in human blood and tissue.
- Babies are uniquely exposed. They drink far more water per kilo than adults, through organs that are still maturing.
Mains tap water is treated to be safe, and for most of us it's fine. What it isn't required to remove is forever chemicals, microplastics or lead.
For a newborn on an all-liquid diet, those are exactly the things worth taking off the table.
Before you reach for the obvious answer
Bottled water and jug filters feel safer. They're not the fix.
- Bottled water isn't recommended for making up feeds. It isn't sterile, some brands carry sodium or sulphate levels that aren't suitable for infants, and it's one of the biggest sources of microplastics there is.
- Supermarket jug filters mostly improve taste and chlorine. Most don't reliably remove forever chemicals, lead or fluoride, and independent testing has shown that many of these filters can actually increase heavy metal contamination such as aluminium by significant margins.
- Boiling alone handles bacteria, but leaves forever chemicals, lead and microplastics right where they were.
Removing forever chemicals, lead and microplastics takes real, multi-stage filtration, not a plastic jug.
The easy options were never built for the contaminants that matter most to a baby.
See it in action
Watch the bench top filter at work.
No plumbing, no power, no fuss. Fill the top, and gravity does the rest, drawing your tap water down through 13 stages of filtration into clean, great-tasting water. Press play below, and tap to unmute.
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The Waters Co difference
Start every bottle with water you can actually trust.
The BIO 500 MAX runs your tap water through 13 stages, removing up to 99% of chlorine, chemicals, heavy metals and bacteria, filtering microplastics down to 0.1 microns, and holds it in a 7 litre hand-blown glass reservoir with a BPA, BPB and BPS-free build. You filter first, then prepare bottles exactly as your formula tin, your health visitor and NHS guidance advise.
- Targets forever chemicals, pesticides and herbicides, plus lead, microplastics, chlorine and bacteria in one pass.
- Hand-blown glass reservoir, BPA / BPB / BPS-free build, no plastic sitting in your baby's water.
- Adds 60+ trace minerals back, so the water enriches rather than just strips.
- Filter first, then follow your usual prep, it's a step before the bottle, never a replacement for safe preparation.
13 stages of sterilising, filtration and mineral activation, held in hand-blown glass.
What comes out
The things you've been staring at the tap wondering about.
Forever chemicals
Flagged for developmental effects in infants and children.
Lead & heavy metals
Can leach from older pipes. No known safe level for a baby.
Microplastics
Boiling doesn't touch them. Filtered to 0.1 microns here.
Glass reservoir
Hand blown, BPA / BPB / BPS-free. No plastic in your baby's water.
Chlorine & sediment
The taste and smell of the tap, filtered out at your worktop.
Minerals added back
Bio-organic trace minerals your water is usually missing.
You have zero spare minutes. We know.
On the worktop in minutes. No plumbing, no power.
Sit it on your kitchen worktop
Compact and lightweight, assembled by hand in a couple of minutes. It's gravity-fed, with no drilling, no electrician, no cupboard rearranging.
Fill the top with tap water
Gravity draws it down through all 13 stages into the 7 litre glass reservoir. Keep it topped up so there's always filtered water ready for the next feed.
Filter, then make up bottles as normal
Draw from the reservoir, boil, cool to no less than 70°C and prepare exactly as your tin directs. One filter set runs up to 12,000 litres or around 18 months, which covers the bottle year and then some.
Glass, not plastic
BPA / BPB / BPS-free build.
Up to 12,000 litres
Per filter set, around 3p a litre.
Free UK shipping
Fast delivery nationwide.
From parents already doing this
The peace of mind on the 3am feed is the part they mention.
"We're formula feeding and I kept thinking about what was in the water going into every bottle. Boiling never sat right with me because I knew it didn't remove the chemicals. This gave me back some calm on the night feeds."
"Our house is older and I was worried about lead in the pipes. Knowing the heavy metals are filtered out before it goes anywhere near the formula was the whole reason we bought it. Simple to use too."
"Bought it the week we brought her home. It sits on the worktop, we filter, then make up bottles the way the tin says. The one baby thing that was genuinely easy to sort."
Honest answers
The questions new parents ask us.
Do I still need to boil the water for formula?
Yes. Always prepare formula exactly as the tin, your health visitor and NHS guidance advise, which means water boiled and then cooled to no less than 70°C, with each feed made up fresh. Filtering happens first, so you're simply boiling and mixing with cleaner water to start with. The BIO 500 MAX is a step before preparation, never a replacement for it, and it is not a steriliser.
Isn't bottled water safer for making up bottles?
No, and NHS guidance advises against it for feeds. Bottled water isn't sterile, some brands have sodium or sulphate levels that aren't suitable for infants, and bottled water is a major source of microplastics. Filtered, re-mineralised tap water lets you avoid the plastic and follow standard preparation with water you can trust.
We have older plumbing. What about lead?
The BIO 500 MAX filters heavy metals including lead, which can leach from older pipes and fittings. Because there's no known safe level of lead for a baby, this is one of the most common reasons parents filter specifically for bottle-making. If you think you have lead pipes, your water company can advise on testing and replacement.
Will it strip out minerals my baby needs?
No. Rather than stripping the water bare, the BIO 500 MAX re-mineralises it, adding back over 60 trace minerals. Your baby's nutrition comes from the formula itself; the filter simply cleans the water you mix it with, and you follow the tin's instructions as normal.
Is our tap water actually unsafe, then?
For most people it's treated to be safe and is fine. What mains treatment isn't required to remove is forever chemicals, microplastics and lead from older plumbing, and infants are the most sensitive to those. That's why many parents choose to filter for the bottle years specifically, rather than out of alarm.
Will 7 litres keep up with a newborn?
Comfortably. A newborn's feeds are a small fraction of that, and the reservoir also covers the tea, coffee and cooking that keep the rest of the household going. You just top it up when it runs low.
Your purchase is 100% protected
Waters Co has led gravity-fed water filtration for over 40 years, with independent lab testing behind its removal claims and certifications including NSF International, ISO, CE, FDA and the Water Quality Association. Your BIO 500 MAX ships free within the UK, holds your water in hand-blown glass rather than plastic, and is covered by a lifetime warranty and a 30 day money back policy. You're not taking a risk, you're taking a worry off the night-feed list.
One thing off the list
You check everything else on the bottle. Now check the water.
Of all the things you're carefully getting right for your baby, this is one of the simplest to sort: cleaner, re-mineralised water held in hand-blown glass, on your worktop, ready for every feed.
BIO 500 MAX 7 Litre Bench Top Water Filter
⭐⭐⭐⭐⭐ Trusted by Thousands
- Free & Fast Delivery
- 99% Forever Chemical Removal
- Easy to Use & Maintain
