does it take out 99.9999 of contaminates including radioactive elements

In an independent test done last year, the Black Berkey filter elements with the PF-2 attachments filtered out the following:Uranium: 100%Lead: 100%Mercury: 99.8%Cesium: 98.6%Aluminum: 86.6%Copper: 100%Arsenic: 100%Strontium: 100%Cadmium: 100%The test they performed in this case was only for heavy metals, so it of course filters out much more than just these things, as shown in other tests. This just highlights the heavy metals. Hope this helps!

How often are filter changes required under normal city water conditions?

It depends on how much water you filter & how many filters you use (2 or 4). Also, normal city water varies due to local water hardness. We fill up the filter 1 to 2 times per day (usually twice) with 4 & change them every 6 months, but if we didn't have kids, our filters would probably last us about twice as long. However, this is still cheaper than other filtering methods we've used & does a much better job.

How does Calif prop 65 relate to this product??

There's plastic in it (the screws) so that sets off prop 65. The Plastic itself is safe but in the manufacturing some things are used that aren't. Prop 65 is waay too vast to be useful.

Do the black filters remove lead?

Tests show the Black Berkey filters remove up to 95% of lead and a host of other heavy metals.

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Berkey Big Gravity-Fed Water Filter with 2 Black Elements Provides Clean, Refreshing Water at Home, Camping, RVing, Off-Grid, Emergencies

Product ID: 253652119

Details

Brand
Berkey
Capacity
8.5 Liters
Material
Stainless
Product dimensions
21.6L x 21.6W
Special features
Chlorine

💧2.25-gallon capacity

🧪Removes 250+ contaminants

🛠️No tools, electricity, or plumbing needed

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NT$32727

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Sold byAmazon TaiwanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💦 Elevate your water game—because clean water is the new luxury.

BUILT TO LAST - Each pair of filters purifies up to 6,000 gallons, supporting your hydration needs for months without compromise.
LAB TESTED SAFETY - Black Berkey Elements are independently verified to reduce over 250 contaminants, ensuring peace of mind with every sip.
VERSATILE PORTABLE - Sleek stainless steel system fits countertops or travel setups—ideal for camping, RVing, emergencies, and everyday use.
EFFORTLESS ECONOMICAL - Gravity-fed design means zero electricity or installation costs, delivering premium filtration for just pennies per gallon.
PURE HYDRATION ANYTIME - Transforms tap or natural water into crisp, great-tasting refreshment—perfect for home, office, or off-grid adventures.

The Berkey Big Gravity-Fed Water Filter features a 2.25-gallon stainless steel system equipped with two original Black Berkey Elements that remove over 250 contaminants without electricity or plumbing. Independently lab-tested, it offers economical, long-lasting filtration for home, office, or outdoor use, filtering up to 6,000 gallons per filter pair. Trusted by adventurers and professionals alike, it delivers pure, great-tasting water anytime, anywhere.

Specifications

ASIN	B00CYW3EVO
Best Sellers Rank	#56,237 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #146 in Under-Sink Water Filters
Brand Name	Berkey
Capacity	8.5 Liters
Container Type	Bottle
Customer Reviews	4.6 4.6 out of 5 stars (3,855)
Global Trade Identification Number	00197644669424
Included Components	Filters
Installation Type	Freestanding
Item Dimensions L x W x H	21.6L x 21.6W x 48.9H centimeters
Item Weight	0.01 Ounces
Manufacturer	Berkey
Material Type	Stainless Steel
Maximum Flow Rate	0.03 Gallons Per Minute
Model Name	BER-BU2
Model Number	BK4X2-BB
Other Special Features of the Product	Chlorine Reduction
Part Number	BER-BU2
Power Source	Gravity-Fed
Purification Method	Activated Carbon
Smart Home Compatibility	Not Smart Home Compatible
Supported Water TDS Level Maximum (PPM)	1000
UPC	197644669424
Unit Count	1 Count
Upper Temperature Rating	1 Degrees Celsius

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