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'.

Zerowater 4 Pack Replacement Filter Cartridges Zr 004 4 Count

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Description

💧 Elevate your hydration with science-backed purity—don’t settle for less!

PURE WATER EVERY TIME - Advanced 5-stage filtration removes 99.6% of total dissolved solids for crisp, clean taste.
UNIVERSAL COMPATIBILITY - Seamlessly fits all ZeroWater pitchers and dispensers, from compact to large capacity models.
ECO FRIENDLY CONVENIENCE - 4-pack replacement filters keep your water fresh longer, reducing plastic waste and saving money.
CERTIFIED SAFETY ASSURANCE - NSF certification guarantees reduction of lead and harmful heavy metals—drink with confidence.
OUTPERFORMS THE COMPETITION - Delivers twice the contaminant removal compared to leading brands—upgrade your hydration game.

ZeroWater 4-Pack Replacement Filter Cartridges utilize a unique 5-stage filtration system with ion exchange technology to remove 99.6% of total dissolved solids, including lead and heavy metals. NSF certified and compatible with all ZeroWater pitchers and dispensers, these filters deliver superior water purity and taste, outperforming leading brands by twice the contaminant reduction. Ideal for health-conscious professionals seeking reliable, eco-friendly hydration solutions.

Specifications

ASIN	B0189G52OK
Best Sellers Rank	#24,756 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #38 in Pitcher Water Filters
Brand	ZeroWater
Brand Name	ZeroWater
Compatible Water Purifier Models	ZeroWater ZBD-040, ZeroWater ZD-010RP, ZeroWater ZD-012-RP, ZeroWater ZD-013W, ZeroWater ZD-018, ZeroWater ZD-022-RR, ZeroWater ZD-030RP, ZeroWater ZD-032-RR, ZeroWater ZD-052-RR, ZeroWater ZD-20RPN, ZeroWater ZFM-400CR, ZeroWater ZJ-003, ZeroWater ZJ-004S, ZeroWater ZP-006, ZeroWater ZP-006-4, ZeroWater ZP-007RP, ZeroWater ZP-010, ZeroWater ZP-010ECO, ZeroWater ZP-012-RR, ZeroWater ZR-0810N
Customer Reviews	4.6 out of 5 stars 3,389 Reviews
External Testing Certification	NSF
Global Trade Identification Number	00851510006002
Included Components	1
Item Dimensions D x W x H	13"D x 18"W x 13.69"H
Item Type Name	ZeroWater 4-Pack Replacement Filter Cartridges ZR-004
Item Weight	3.02 Pounds
Manufacturer	ZeroWater.
Manufacturer Part Number	ZR-004
Material	Porcelain
Material Type	Porcelain
Model Number	ZR004
Number of Items	1
Product Benefits	Reduces Microbial Cysts
Product Dimensions	13"D x 18"W x 13.69"H
Set Name	4-pack
UPC	851510006002
Unit Count	4.0 Count

Reviews

R**E

4.03.2026

J**N

17.03.2026

A**R

28.04.2026

W**R

3.10.2025

A**A

24.02.2026

T**Y

5.01.2026

A**R

24.04.2026

K**N

20.03.2026

T**N

22.02.2019

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Trustpilot

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Anita G.

Good experience, but the tracking updates could be better.

2 months ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

€ 107.12

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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Customer service was outstanding when I had questions about the product.

2 days ago