Water filters.

Submitted: Saturday, Mar 03, 2018 at 20:29
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What is the best portable filter for drinking water?
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Reply By: Member -Pinko (NSW) - Saturday, Mar 03, 2018 at 20:53

Saturday, Mar 03, 2018 at 20:53
BEST Water Filter Inline Caravan RV Water Filter
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Reply By: Crusier 91 - Saturday, Mar 03, 2018 at 21:40

Saturday, Mar 03, 2018 at 21:40
Another vote for BEST.
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Follow Up By: IvanTheTerrible - Saturday, Mar 03, 2018 at 22:05

Saturday, Mar 03, 2018 at 22:05
Best is the only one I can find. I assume there would be others.
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Reply By: Sand Man (SA) - Sunday, Mar 04, 2018 at 09:03

Sunday, Mar 04, 2018 at 09:03
What do you mean by best?

I use an in-line filter cartridge on my caravan, available from Bunnings.
Stefani Water Filter Cartridge

I also have a Brita water filter Jug which can be put in the fridge to keep the water chilled. Available from BigW.
I use the 2.4l model. It uses a replaceable filter cartridge.
Brita Filter Jug

Both are excellent, giving clear, untainted drinking water, without breaking the Bank.
Combine the two, (ie fill the jug from the filtered van water) and you can't go wrong. If you are not connected to the mains water at a van park, just fill the jug from the van's tank.
I fill an insulated 530ml drinking flask from the jug prior to the day's travel and I have cheap. tasty, chilled drinking water while driving. No overpriced bottled water for me!

Bill


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Follow Up By: Member - ACD 1 - Sunday, Mar 04, 2018 at 12:41

Sunday, Mar 04, 2018 at 12:41
Hi Bill

B.E.S.T. is a brand of inline water filter. It stands for Bacteria Eliminating Silver Treatment.

It is a cartridge that can have hose fittingsor permanent fittings at either end for Portable or permanent fitting.

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Anthony

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Reply By: Peter_n_Margaret - Sunday, Mar 04, 2018 at 09:07

Sunday, Mar 04, 2018 at 09:07
A 0.5um active carbon with silver installed after the pump and before the tap, preceeded with a 5um sediment filter to protect the carbon filter from excessive crud.
The most economical way to achieve this is to use twin 10"under sink style housings and replaceable filter cartridges.
Best" are not all that quality (they have options), are much smaller capacity and at least double the replacement cost.
Buy cartridges according to specification, not brand.

Cheers,
Peter
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Reply By: Bob Y. - Qld - Sunday, Mar 04, 2018 at 09:16

Sunday, Mar 04, 2018 at 09:16
Ivan,

No filter will clear turbid water for drinking, except probably reverse osmosis, so you'll need to clear the water first, before filtering to remove the "nasties".

There's a number of products that will clear the sediment.

Bob

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Follow Up By: Peter_n_Margaret - Sunday, Mar 04, 2018 at 09:41

Sunday, Mar 04, 2018 at 09:41
I suggest that a 0.5um filter will remove colloidal clay from water, but it will also block the filter relatively quickly too, so avoid cloudy water for that reason if you can (although the cloudy stuff is unlikely to be a risk in itself, the other stuff present may be).
If you can't avoid it, a pinch of alum will flocculate all the cloudy stuff in a bucket if left to stand for a few hours and the clear water can be poured off the top.

We chlorinate ALL water that we pick up (with sodium hypochlorite). The carbon filter will remove any chlorine that is left over.

Cheers,
Peter
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Follow Up By: Bob Y. - Qld - Sunday, Mar 04, 2018 at 10:54

Sunday, Mar 04, 2018 at 10:54
Thanks for that, Peter. Kept my reply brief as not really sure if Ivan was chasing that info or not.

Having lived on the Diamantina for over 20 years, we're very, very familiar with the use of alum for clearing water. We only used cleared water for washing & cooking, not for drinking.

Note your use of sodium hypochlorite, might have to get some.

Bob

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Follow Up By: Peter_n_Margaret - Sunday, Mar 04, 2018 at 17:24

Sunday, Mar 04, 2018 at 17:24
Sodium hypochlorite is standard household bleach without any additives (the cheapest you can buy). Liquid pool chlorine is the same, but usually double the concentration.
Granular pool chlorine is different. Don't use that.

Cheers,
Peter
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Reply By: Ron N - Sunday, Mar 04, 2018 at 09:45

Sunday, Mar 04, 2018 at 09:45
Peter has nailed it. I've been using a Pentek standard 10" (250mm) x 2.5" (63mm) double filter system for around 15 years, and it works just fine.

I use a 5 micron, string wound primary filter to catch the rocks and dirt, and a 1 micron activated carbon filter to catch the bugs and crap, that gets through the 5 micron primary filter.

It's staggering the amount of crap you find in the filters when you change them, they can triple in weight.

I've found the white filter housings and heads don't like UV light and will crack and split if exposed to sunlight for extended periods.
The more durable filter housings and heads are the blue or black ones.

A local supplier, Aquastream, have a good range of products, a good website, and reasonable prices.
Make sure you keep a chart/log of filter installation date and replacement dates taped somewhere easily visible - and make sure you write down the filter installation and change dates.

It's too easy to forget about changing them when they're not on view regularly. I change the filter cartridges every 18 mths.

The best part about the 10 inch x 2.5 inch Pentek system is that the number of retailers/resellers is huge, and you can even get them off eBay.
I've even purchased off FiltersFast in the U.S. when I couldn't find cheap enough replacements here.

Watch out for the ripoffs involved in water filters, some retailers think selling them is the path to an immediate fortune.
The primary filter cartridges shouldn't cost any more than about $10 to $15, and the activated carbon ones shouldn't cost any more than about $25 to $30.

Cheers, Ron.
AnswerID: 617355

Reply By: Member - Stephen L (Clare SA) - Sunday, Mar 04, 2018 at 09:48

Sunday, Mar 04, 2018 at 09:48
Hi Ivan

If you are using dam, or river water that has lots of suspended clay particles, you fist must remove those particles first before you can further treat the water.

I did this experiment a few years ago and it works a treat, changing murky water to water as clear as rainwater in just hours.

Have a look at my Blog on How to Settle Muddy Water


Cheers



Stephen
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Reply By: qldcamper - Sunday, Mar 04, 2018 at 10:25

Sunday, Mar 04, 2018 at 10:25
I have been using a filter that I have modified, using a standard spin on filter housing. It is stuffed full of that synthetic stuffing material used in toys and cheep pillows. I just syphon it through that between two 20l buckets, when the flow rate slows just take it apart and give it a rinse out and stuff it back in, the tighter I stuff it in the finer it filters, don't have to carry spare cartridges that way.

Once it is clean I use a method I found online to kill off any harmful organisms.
It is taken from the survival kits they drop in disaster struck areas by the US military.

After a lot of searching and converting strengths and imperial to metric conversions it turns out that 5ml of the bleach Aldi sells to 20 litres of water for 12 hours works, double it if it is really bad water.( I have never used it on really bad, like dead animals floating in it)

I use the water for everything other than drinking however I have made coffee out of it and survived just out of curiosity, couldn't taste the bleach at all.

I do flush the filter out with a high concentration of bleach then with town water till there is no smell when it has been in storage for a while and keep it sealed when stowed in the trailer.
AnswerID: 617358

Reply By: Member - Noah273 - Sunday, Mar 04, 2018 at 17:31

Sunday, Mar 04, 2018 at 17:31
We use a "BEST" filter inline when filling our tanks from a tap with pressure however when we need to draw water from a natural source we use this KatadynAn excellent fool proof product with a claimed filter life of up to 100 000 litres.
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Bryan

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Follow Up By: IvanTheTerrible - Sunday, Mar 04, 2018 at 18:10

Sunday, Mar 04, 2018 at 18:10
$2,193 is little on the expensive side and have a similar internal to the best in that they both use silver to kill the bugs
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Reply By: Michael ( Moss Vale NSW) - Thursday, Mar 08, 2018 at 20:53

Thursday, Mar 08, 2018 at 20:53
We recently purchased a Sawyer 0.1micron filter. It is a portable unit, It comes with a range of accessories and adapters. It has a lifetime guarantee and guaranteed to filter 4 million litres of water of all qualities. So you get a bucket adapter, a faucet adapter so you can use it at home or take it with you overseas, and also comes with a litre bag that screws into the filter for bushwalking to allow you to drink directly from the filter. It will filter 1200 litres of water a day. The kit is around $100, It's called " All in One", Sawyer filter. No boiling or chemicals after filtering. For around $200, you can buy a similar Sawyer kit but it has a 0.02 micron filter. Made in USA. Probably the finest filter on the market. regards, Michael
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Follow Up By: Ron N - Thursday, Mar 08, 2018 at 23:53

Thursday, Mar 08, 2018 at 23:53
Michael - It would have to be pretty clean water to start with!! - as in no suspended sediment - to filter 4,000,000 litres to 0.01 micron!! - with a filter that size!!

Are you sure you didn't accidentally add a couple of zeros to that 4,000,000 litres?

I pull my 2, 10 inch x 2.5 inch (250mm x 63mm) Pentek filter elements that are fitted to the house, out after around 12-18 months - and about 40,000 to 60,000 litres throughput - and they are FULL of crap!

And this is only 1 micron filtering, from MAINS water!!

Cheers, Ron.
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Follow Up By: Michael ( Moss Vale NSW) - Friday, Mar 09, 2018 at 05:57

Friday, Mar 09, 2018 at 05:57
Ron I can only give you the facts that Sawyer quote. They do suggest when you use the bucket set up with cloudy or water with suspended dirt that you prefilter with an old T Shirt or similar to save having to backflush the filter and keep the flow rate up. So stretch a T Shirt over the bucket and pour the water through that, sounds reasonable. And I did say 0.1 not 0.01 as you replied. Also they supply a syringe to backflush the filter each time you use it.
Michael.
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Follow Up By: Peter_n_Margaret - Friday, Mar 09, 2018 at 09:37

Friday, Mar 09, 2018 at 09:37
Where does all the stuff that gets filtered out go?
Any third party accreditation?

Cheers,
Peter
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Follow Up By: Member - Noah273 - Friday, Mar 09, 2018 at 10:34

Friday, Mar 09, 2018 at 10:34
This person in the states had the water tested from a Sawyer filter . Got to be happy with this result.

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Follow Up By: Michael ( Moss Vale NSW) - Friday, Mar 09, 2018 at 11:11

Friday, Mar 09, 2018 at 11:11
Gday Peter,
A large syringe is supplied with the kit and when you finish using the unit, you simply inject a few syringes of the filtered water back through the unit to back flush and clean the unit. The flow is reasonable considering the micron size, you can fill a 600ml water bottle in about 30 to 40 seconds via gravity. If using the faucet adapter, the flow is about 3 times that. regards, Michael
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Follow Up By: Ron N - Friday, Mar 09, 2018 at 12:15

Friday, Mar 09, 2018 at 12:15
Michael - Ahh, O.K.. My apologies for my decimal error - too late at night when I read that, and my eyes and brain weren't co-operating!

I can see now how Sawyer can claim 4M litres throughput - the regular backflushing is the secret.
That would get rid of the sediment and bacteria load on a regular basis.

Cheers, Ron.
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Follow Up By: Michael ( Moss Vale NSW) - Friday, Mar 09, 2018 at 12:29

Friday, Mar 09, 2018 at 12:29
Ron, that's the problem with most filters, backflushing is not an option and need the entire filter or at least the cartridge replacing periodically. We have an under sink Brita filter at home and it needs to be replaced every six months and it's 0.5 micron and the flow is pathetic to say the least. The Brita replacement filter is $77, so for $100, the Sawyer is a pretty good deal. regards, Michael.
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