New filter right out of a box of 4 and it doesn’t work! ppm 326! my tap water is 302...? yes the o ring is there and i screwed it in properly. ?..

Have not seen this with any of the filters - on my third one out of the 4 pack. I have found they last a long time before needing to be changed. Maybe try another filter and see what happens. Thoroughly clean everything first.

I just received my filters on august 4. by august 6 the tester reads 16. is this defective filter? there is only one person in household.

The filter normally works between 3-4 months for myself, 2 months when my son is home from college. A failure so quickly can be caused by a number of things; the filter may not be seated in the holder correctly, the filter may not be tightened or the fulfillment company damaged the product before shipping but shipped it anyway. Yes the last one did happen.

Does it contain coconut shells?

I didn't see any coconuts. I have no idea what you are driving at. Coconut shells? Am I missing something?

Whats the difference between the zr-004 filter and the zr-006 filter besides 15 dollars?

Not much 'Google' info available about this, but on the ZeroWater FAQs page, someone asked what the difference was between ZR-001 and ZR-017, and ZeroWater responded with 'just the quantity is different'.

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4-Pack Replacement Filter Cartridges ZR-004, Basic pack

Product ID: 271980569

Details

External testing certification
NSF
Item weight
3.02 Pounds
Material
Porcelain
Product benefits
Reduces Cysts
Product dimensions
33D x 45.7W x

💧5-stage filtration tech

🧪NSF certified heavy metal reduction

⚗️Ion exchange contaminant removal

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€ 180.00

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Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Elevate your hydration game with ZeroWater’s purest filter experience!

DOUBLE THE PURITY - Removes 99.6% of total dissolved solids—twice the effectiveness of leading brands.
PURE WATER EVERY TIME - Advanced 5-stage filtration delivers cleaner, better-tasting water than standard filters.
CERTIFIED SAFETY TRUST - NSF certification guarantees reduction of lead and harmful heavy metals for peace of mind.
FITS ALL ZERO WATER PITCHERS - Seamlessly compatible from smallest to largest pitchers and dispensers—no guesswork needed.
SWITCH UPGRADE EFFORTLESSLY - Compatible with other popular brands—make the smart switch to ZeroWater’s superior filtration.

The ZeroWater 4-Pack Replacement Filter Cartridges ZR-004 feature a unique 5-stage ion exchange filtration system that removes 99.6% of total dissolved solids, outperforming leading brands. NSF certified to reduce lead and heavy metals, these filters fit all ZeroWater pitchers and dispensers, offering a reliable upgrade for cleaner, better-tasting water at home or on the go.

Specifications

ASIN	B0189G52OK
Best Sellers Rank	#175,439 in Kitchen ( See Top 100 in Kitchen ) #535 in Water Filter Cartridges
Brand Name	ZeroWater
Customer Reviews	4.6 4.6 out of 5 stars (3,217)
External Testing Certification	NSF
Global Trade Identification Number	00851510006002
Included Components	1
Item Dimensions D x W x H	33D x 45.7W x 34.8H centimeters
Item Type Name	ZeroWater 4-Pack Replacement Filter Cartridges ZR-004
Item Weight	3.02 Pounds
Manufacturer	ZeroWater.
Manufacturer Part Number	ZR-004
Material Type	Porcelain
Model Number	ZR004
Number of Items	4
Product Benefits	Reduces Microbial Cysts
UPC	851510006002
Unit Count	4.0 Count

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