British Berkefeld® 7″ Ultra Sterasyl® Ceramic Water Filter (NSF Certified)

The Ultra Sterasyl Ceramic Water Filter is the world’s only NSF-certified gravity filter meeting NSF/ANSI standards 42, 53, 372, and 401.

It’s our bestselling filter and trusted replacement for all British Berkefeld® and Berkey® ProOne®, Alexapure, Patriot Pure & Many More gravity water filter systems.

This NSF-certified Ultra Sterasyl water filter effectively removes a wide range of contaminants including; 

• Bacteria: Effectively removes bacteria like E. coli, cholera, and typhoid.
• Chlorine: Reduces chlorine levels, improving taste and odor.
• Heavy Metals: Reduces lead and other heavy metals like aluminum, chromium, copper, and cadmium.
• Microplastics: Removes microplastics from drinking water.
• PFAS: Reduces the presence of PFAS, also known as “forever chemicals”.
• Pesticides and Herbicides: Filters out a range of pesticides and herbicides.
• Pharmaceuticals: Reduces the presence of pharmaceuticals in water.
• And Many Other Chemicals: Removes a variety of other chemicals and contaminants. 

• No priming or red dye test needed — easy to install and maintain

• Mineral Retention: Retains healthy, beneficial minerals naturally present in your water. British Berkefeld filters are designed to filter out contaminants while leaving naturally occurring minerals like calcium, magnesium, and potassium intact. In fact, they can even increase the minerals in the water.

• Durable microfilter ceramic exterior with granular activated carbon & heavy metal removal media inside

• Replacement Schedule: Recommended replacement every 6-12 months or 3,000 litres (800 gallons) per set of 2 filters.

• Not compatible with Berkey PF-2 fluoride and arsenic filters (see Ultra Fluoride filters for fluoride removal)

• W9121226