Weeplow Earth 8.5L Gravity Water Filter review
By Tom Calder
A well-built stainless steel gravity system whose O’Pure 2 elements pair activated carbon with a 0.02-micron hollow-fibre membrane, a step beyond carbon-only filters. Weeplow publishes its lab reports: in SGS testing the elements cut the MS2 test virus by 99.9999%, and other reports cover PFAS, pesticides and heavy metals. It needs no power or plumbing, and long-life elements keep running costs low.
- Best for
- Households that want one worktop filter for everyday drinking water and supply resilience, with a membrane designed to block viruses as well as bacteria.
- Skip it if
- You only want better-tasting tap water day to day
as of 2 Nov 2026, 16:07 GMT · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.We earn a commission if you buy through the retailer links on this page. It doesn't change our verdict. How we make money →
Researched, not used. We haven't used this product. This review is built from the maker's specifications, owner reports and our own sizing.
Weeplow has paid for an advertisement feature on this site.
What we like
- A 0.02-micron hollow-fibre membrane plus activated carbon: in SGS testing the elements cut the MS2 test virus by 99.9999%, and Weeplow’s published reports also cover PFAS, pesticides and heavy metals.
- Runs entirely on gravity, so it keeps producing filtered water during a power cut or supply interruption.
- Weeplow rates a pair of elements at up to 22,000 litres (typically one to two years), which it puts at less than a penny a litre.
- Food-grade 304 stainless steel with a 10-year warranty on the chambers, stand and tap, and it ships from within the UK.
Worth knowing
- Gravity flow is slow, up to about 3.8 litres an hour with both elements, and they need scrubbing every couple of months to keep the flow up.
- New elements need priming and one or two flush cycles before first use, which takes a little patience.
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Our review
The Weeplow Earth is an 8.5 litre stainless steel gravity filter whose two elements combine activated carbon with a 0.02 micron hollow-fibre membrane. Weeplow publishes lab reports, including a 99.9999% reduction of the MS2 test virus by SGS, which is more evidence than most worktop filters offer. UK tap water is already safe, so this is a resilience purchase, not a daily necessity.
What it is
Weeplow's product page gives a 304 stainless steel system 50 cm tall, or 66 cm on its stand, 22 cm across and 3.75 kg, holding 8.5 litres in total. Two O'Pure 2 elements pass up to 3.8 litres an hour between them and are rated for up to 22,000 litres as a pair, which Weeplow puts at one to two years of household use. The chambers, stand and tap carry a ten-year warranty. There is no plumbing, no power and no pressure: water goes in the top and drips through.
Weeplow's technology page describes the elements as hollow-fibre ultrafiltration combined with activated carbon, with a 0.02 micron pore size, and says they were assessed under the NSF/ANSI 42 and 53 protocols. It does not claim NSF certification, which is a different thing: a certified product is tested and audited by the standards body itself.
What the lab reports say
Weeplow's independent tests page lists five reports. SGS tested the MS2 virus at a 99.9999% reduction, and ran the pesticide and heavy metals work; the bacteria and PFAS reports come from labs the page does not name. The product page quotes E. coli at greater than 99.99% in one place and nearly 99.99% in another, PFAS at more than 99.9% and pesticides at up to 99.9%. We found no report on cysts such as Cryptosporidium, though a 0.02 micron membrane is far finer than a cyst, and none on chlorine, which the carbon is there for.
Our separate Weeplow Earth guide goes through the reports in more detail. The Drinking Water Inspectorate exists, in its own words, to provide independent reassurance that public water supplies in England and Wales are safe, and our guide to whether UK tap water is safe explains how that regulation works. A filter like this is for the rare day the supply is interrupted or a boil water notice is issued, when stored water and your water company's instructions come first.
Living with it
Gravity is slow. Nearly four litres an hour from a full top chamber is fine if you fill it at night, less fine if you want eight litres now. New elements need priming and a couple of flushes, and Weeplow says they need a scrub every few months to keep the flow up. The 22,000 litre rating works out at well under a penny a litre over the life of the elements, which is where a gravity filter beats a jug.
Note that Weeplow advertises with us. That does not change the figures above, which are its own, or the honest limit: this is a worktop filter, and a household that does not store water has the wrong thing first.
How it compares
On the gravity filters page British Berkefeld's 8.5 litre system uses two Ultra Sterasyl ceramic candles, a design with decades of use behind it, and the ProOne Big uses ceramic elements of its own. Neither publishes a virus test the way Weeplow does. The LifeStraw Home dispenser is cheaper and smaller but its membrane is rated for about 1,000 litres and its carbon stage for 150, so it costs more to run. Weeplow's own Venus is the same technology at 5.6 litres for a smaller kitchen.
Our verdict
Buy it if you want one worktop filter for everyday water and for the week the mains is off, and you value a maker that publishes its lab results. Skip it if you only want nicer-tasting tap water, where a jug does the job, and skip it until you have stored drinking water, which matters more than any filter.
A researched review, built from the maker's specs, manual and UK listings; facts checked 2 Nov 2026. Sources: Weeplow: Earth 8.5 litre gravity-fed water filtration system; Weeplow: independent lab tests; Weeplow: our technology; Drinking Water Inspectorate: what we do.
Who shouldn't buy this
You only want better-tasting tap water day to day. UK mains water is already safe to drink, so a jug filter does that job for less; this earns its place if you also want filtered water through a power cut or supply interruption.
Key specs
| Capacity | 8.5 |
| Filter life | 22000 |
| Filters | 2 x O’Pure 2 elements: coconut-shell activated carbon plus a 0.02-micron hollow-fibre ultrafiltration membrane (maker rates a pair at up to 22,000 L) |
This is a Researched review: we haven't used this product. We check every specification against at least two independent sources, re-check the UK price on a schedule where we can track it automatically, and say plainly who it isn't for. Commissions never change a rating.
Weeplow has paid for an advertisement feature on this site.
If this isn’t the one
Best for Households wanting mains-independent, plumbing-free drinking water at home or in an emergency.
Best for A family, or anyone who wants a bigger reservoir to stretch a power cut or supply interruption.
as of 2 Nov 2026, 16:07 GMT · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.
Best for Mains-water households wanting better-tasting, safer drinking water with no plumbing work.
as of 2 Nov 2026, 16:07 GMT · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.Questions
Does the Weeplow Earth remove viruses?
Weeplow publishes an SGS report showing a 99.9999% reduction of the MS2 test virus through its O'Pure 2 elements. It is assessed under NSF/ANSI protocols rather than NSF certified.
How long do the filters last?
A pair of elements is good for up to 22,000 litres according to Weeplow, which it says is one to two years for a typical household. They need a scrub every few months to keep the flow up.
How fast does it filter?
Up to 3.8 litres an hour with both elements fitted, according to Weeplow. Fill it in the evening and it is ready by morning.
Do I need a water filter in the UK?
No. Public supplies in England and Wales are regulated by the Drinking Water Inspectorate and are safe to drink. A gravity filter is for an interruption or a boil water notice, and stored water should come first.
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