Let me start off by saying it is very hard to determine what is fact and what is propaganda, since this is a water filter that competes with the biggest water filter company in India.
Court to Decide Water Purifier Battle
Pure Water, Dirty Linen
Water purifiers ineffective in preventing waterborne diseases, revealed through RTI
For those who don't know (as I didn't,)
The Pureit water filter consists of four parts that purify the water
in four stages: a 'microfibre mesh', a 'compact carbon trap', a
'germkill processor' and a 'polisher', as branded by Hindustan
Unilever. For the Pureit Marvella model, the microfibre mesh has been
rebranded as a 'pleated filter', while the compact carbon trap has
been rebranded as an 'activated carbon filter', along with a prefix of
'unique'. The microfibre mesh functions as a sieve, filtering out
visible dirt. The carbon trap removes parasites and pesticides. The
processor is a tablet consisting of chlorine. This stage removes
bacteria and viruses. The polisher improves taste and clarity of water
and removes the residual form of chlorine from the water. These four
parts are collectively branded the germkill kit or the battery.
This battery needs continual replacing, as indicated by a germkill
battery indicator visible on the front of the device. Pureit also
features an 'auto switch off' mechanism whereby the filter prevents
the flow of water following the consumption of the germkill kit. This
kit itself comes in various models. The model of the germkill kit
determines how much water it can purify before the kit needs
The germkill kit is designed to work at 25° C in moderately humid
conditions. The volume specified by the germkill battery assumes these
conditions. The germkill kit has an expiry date of three years from
the date of packaging.
While according to Pureit,
The first batch of water that gets purified in your new Pureit, or
from a new 'Germkill Kit™', should be drained away when it collects in
the transparent chamber. This batch of water may have a distinctive
taste and needs to be drained out by opening the tap. It should be
noted that even though the first batch of water may have a distinctive
taste, it is completely safe, even if accidentally ingested. Once you
drain away the first batch, you will get pure and great tasting water
in subsequent batches.
This would suggest that at least some chlorine gets through on a new system or a new 'Germkill Kit' (ie. chlorine tablet.) However I cannot seem to find any factual information to support claims that they don't remove 100% of the chlorine from the water, after the initial use. This doesn't mean that they truly do, but since they have had samples of there water tested by numerous labs around the world (a result of court cases and competitive company attacks,) if they didn't in fact remove 100% of the chlorine you would think there would be a large amount of evidence showing this.
Their 'polisher' is a activated carbon filter, and activated carbon is very good at removing chlorine, and it is entirely possible for a activated carbon filter to remove 100% of chlorine from water. Most remove between 96% to 100% with the average at 99%.
HUL claims Pureit does the following:
- Meets E.P.A. germ kill criteria.
- Provides complete protection from waterborne diseases caused by germs.
- Is 'As Safe As Boiled Water'. This is also Pureit's tag line.
They also claim that it has been tested by the following institutions:
- SRL Ranbaxy Clinical Reference Laboratories, Mumbai, Maharashtra.
- Sundaram Medical Foundation, Chennai, Tamil Nadu.
- King Institute of Preventive Medicine, Chennai, Tamil Nadu.
- Indian Public Health Association, Kolkata.
- Institute of Public Health Engineers, Kolkata.
- National Institute of Cholera and Enteric Diseases, Kolkata.
- Central Food Technological Research Institute, Mysore, Karnataka.
- National Environmental Engineering Research Institute, Chennai, Tamil Nadu.
- London School of Hygiene and Tropical Medicine, UK.
- Scottish Parasite Diagnostic Laboratory, Glasgow, UK.
Virological evaluation lab test results, Pureit is Unit 8 (Chlorine levels not tested.)
So in conclusion, if you exclude the first batch of water produced, as the company says to do, it does seem like this unit filters out very close if not all of the chlorine it introduces in the stage before the polisher. It seems it's virus filtering ability is the most serious potential flaw in the unit, as this is the majority of the articles I read focused on.
Sorry if this wasn't very helpful, it isn't easy finding much unbiased information on the subject.