How long can I keep these filter in storage

Not really sure -- we've had ours for a year (bought them at the time we bought the system) and so far so good.

I am considering this unit for my 2nd home and expect to use sparingly-- is the filter replacement dependent on time elapsed or amount of water used?

Hi, Thanks for your interest in our product. Please note the lifespan of our products relies on two factors: time elapsed and amount of filtered water, when either of these two dimensions is reached, cartridge replacement is required. If you have any other questions, please feel free to contact us. Enjoy the rest of your day! Kind Regards Mia Lauren Customer Service Rep

Am i correct in my assumption that this is not an nsf certified water filtration system?

They were going through the NSF testing process for a while, but now their website and the product description on Amazon states that it is an NSF 58 & 372 CERTIFIED water filtration system with NSF certified replacement filters.

Will these filters work with the G2 system?

Hi Steven, Thanks for your interest in our Waterdrop WD-G2-B Reverse Osmosis System. We are sorry to tell you that those three filters for the G3 system can not work with the G2 system. The G2 system has two composite filters, which are CF filter and MRO filter. Both of them will be in stock in April. Here is the purchase link of there two filters for your reference. CF: http://www.amazon.com/dp/B082D1VZ4P?ref=myi_title_dp MRO: http://www.amazon.com/dp/B082CZV16X?ref=myi_title_dp If you have any questions, please feel free to give us a call between the hours of 8:00 AM-5: 00 PM (PST), Monday through Friday at 1-888-352-3558. We will try our best to help you out. Thank you very much. Best Regards, Mia Lauren

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Waterdrop WD-G3-W Replacement Filter 1-Year Combo, Pack of 2 WD-G3-N1CF Filters and 1 WD-G3-N3CB Filter

Waterdrop WD-G3-W Replacement Filter 1-Year Combo, Pack of 2 WD-G3-N1CF Filters and 1 WD-G3-N3CB Filter

Product ID: 735415812

Details

Brand
Waterdrop
Included Components
Filter User
Installation Type
Under Sink
Item Weight
2.07 kg
Material
Activated
Model Name
WD-G3-2CFCB

⏳1-year long-lasting filter life

💧3-in-1 multi-stage filtration

🥥Natural coconut shell activated carbon

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€ 433.68

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Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Pure water, pure power—taste the difference, skip the wait!

COCONUT CARBON POWER - Superior natural coconut shell activated carbon blocks residual chlorine and odors, enhancing taste.
TANKLESS TDS READY - Advanced reverse osmosis with TDS reduction, compatible with up to 300 PPM water hardness.
TRIPLE ACTION PURITY - Effectively reduces sand, rust, and airborne impurities for crystal-clear water.
EFFORTLESS REPLACEMENT - Twist & go filter swap in just 3 seconds—no tools, no hassle.
HEALTH FIRST FILTRATION - Precision system improves water taste and odor while supporting your family’s well-being.

The Waterdrop WD-G3-W Replacement Filter Combo includes two WD-G3-N1CF and one WD-G3-N3CB filters designed for G3-W, G3P600, and G3P800 RO systems. Featuring a 3-in-1 multi-stage filtration with natural coconut shell activated carbon, it effectively removes sand, rust, chlorine, and odors, delivering fresh, great-tasting water. Each filter lasts up to one year and installs effortlessly with a simple twist, supporting health and convenience for your home.

Specifications

ASIN	B07WZDLNLY
Amazon Bestseller	#1,648,497 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1,186 in Replacement Stationary & Under-Sink Water Filters
Brand Name	Waterdrop
Customer Reviews	4.8 4.8 out of 5 stars (1,437)
EU Spare Part Availability Duration	1 Years
Included Components	Filter, User Manual
Installation Type	Under Sink
Item Type Name	Undersink Water Filtration System
Item Weight	2.07 kg
Manufacturer	Waterdrop
Material Type	Activated Carbon, Carbon
Model Name	WD-G3-2CFCB
Model Number	WD-G3-2CFCB
Other Special Features of the Product	Multi-stage filtration, TDS reduction, tankless
Part Number	WD-G3-2CFCB
Power Source	Gravity Supply/Water Pressure
Purification Method	Reverse Osmosis
Supported Water TDS Level Maximum (PPM)	300
UPC	840814161753
Unit Count	1.0 Count
Upper Temperature Rating	100 Degrees Fahrenheit

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