Pentek EPM-20BB Big Blue Carbon Water Filter — 20-Inch, 10 Micron, 30,000 Gallon Capacity

The Pentair Pentek EPM-20BB Big Blue carbon water filter is a cost-conscious cartridge designed for whole-house filtration. This 20-inch unit combines a modified carbon block with bonded powdered activated carbon to support taste and odor reduction while still handling sediment filtration. The result is a cartridge that aims to deliver consistent performance across daily water use, from showers to cooking, without a steep pressure drop.

Key benefits at a glance

• ECONOMICAL SOLUTION for chlorine taste & odor reduction and sediment filtration
• FITS ALL 20" Big Blue housings and other 20" heavy-duty housings, replacing 20" x 4.5" carbon cartridges
• HIGH POROSITY design helps prevent early plugging, maximizing adsorption while maintaining a low pressure drop
• NSF International tested and certified for your peace of mind
• 30,000 gallon capacity with recommended replacement every 6 months or when water quality or pressure changes

Design, performance, and real-world use

In real-life use, you may notice clearer-tasting water and less odor after installation, especially in municipal-supplied systems. The cartridge’s high porosity enables steady flow, while the outer wrap traps sediment that can clog carbon blocks, helping to extend overall life between replacements.

• Low pressure drop supports normal household filtration performance
• Easy replacement in standard 20" housings for DIY setups

Compatibility and maintenance

Designed to fit 20" Big Blue housings and many 20" heavy-duty housings, the EPM-20BB is a practical option for upgrading taste and odor reduction in a whole-house filtration system. Replace every six months or when you notice changes in water quality or pressure to maintain expected performance.