---
product_id: 451751528
title: "Pentair Pentek EP-20BB Big Blue Carbon Block Water Filter, 5 Micron"
brand: "pentek"
price: "2365.99 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Pentek"
url: https://www.desertcart.tn/products/451751528-pentair-pentek-ep-20bb-big-blue-carbon-block-water-filter
store_origin: TN
region: Tunisia
---

# Low 2 psi pressure drop at 4 gpm 5-micron fine sediment filtration 44,000-gallon cartridge capacity Pentair Pentek EP-20BB Big Blue Carbon Block Water Filter, 5 Micron

**Brand:** pentek
**Price:** 2365.99 DT
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your water game—because your home deserves the freshest flow.

## Quick Answers

- **What is this?** Pentair Pentek EP-20BB Big Blue Carbon Block Water Filter, 5 Micron by pentek
- **How much does it cost?** 2365.99 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/451751528-pentair-pentek-ep-20bb-big-blue-carbon-block-water-filter)

## Best For

- pentek enthusiasts

## Why This Product

- Trusted pentek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Flow That Keeps Up:** High-porosity design maximizes carbon use while maintaining steady water flow with minimal pressure loss.
- • **Certified Confidence:** NSF/ANSI Standard 42 tested and certified for reliable material safety and performance.
- • **Value-Packed Longevity:** Each cartridge filters up to 44,000 gallons—enough for a year of fresh water, shipped in a convenient 4-pack.
- • **Pure Taste, Zero Compromise:** Bonded activated carbon block slashes chlorine taste & odor for fresher whole-home water.
- • **Built to Last, Designed to Fit:** Fits all 20-inch Big Blue housings with a durable polyolefin wrap that traps sediment and extends life.

## Overview

The Pentair Pentek EP-20BB is a 20-inch Big Blue carbon block water filter cartridge that reduces chlorine taste, odor, and fine sediment down to 5 microns. Featuring a high-porosity design and polyolefin outer wrap, it ensures efficient filtration with minimal pressure drop (2 psi at 4 gpm). Certified to NSF/ANSI Standard 42, it fits all 20-inch Big Blue housings and delivers up to 44,000 gallons of cleaner, better-tasting water per cartridge. Sold as a value 4-pack, it supports whole-home filtration needs for over a year.

## Description

The Pentair Pentek EP-20BB is a 20-inch Big Blue whole-house carbon block cartridge that reduces chlorine taste and odor and other unwanted tastes and odors for cleaner, better-tasting water. It is molded from bonded powdered activated carbon (PAC) and rated at a nominal 5 microns, so it also captures fine sediment.A high-porosity design keeps water moving through the block as the carbon works, so more of the carbon is used before the cartridge plugs, all at low pressure drop. A polyolefin outer wrap acts as a pre-filter, trapping sediment that would otherwise plug a carbon block and extending the cartridge's useful life.Measuring 20" x 4.5", it fits all 20-inch Pentair Pentek Big Blue and other heavy-duty housings and is tested and certified by NSF International to NSF/ANSI Standard 42 for material requirements. Each cartridge provides up to 44,000 gallons at a low 2 psi drop at 4 gpm and handles water up to 180°F. Ships as a value 4-pack; replace about every 12 months.

Review: Excellent filter! - I used this filter with a Pentair Big Blue housing as part of my water filtration system. Unfortunately, after plumbing was done and when I took the filter out, I discovered that the blue rim on one end of the filter was broken. The damage was not visible until I removed the filter from its packaging. This is not a defect of the filter itself; rather, desertcart needs to ship these filters more securely, perhaps with bubble wrap or additional protective packaging. Fortunately, desertcart made it easy to request a replacement. The replacement arrived without any defects, but it was still simply placed in a box without much protection, which could easily result in damage during shipping. As for the filter's performance, it has been exceptional. I experienced very little pressure loss—about 2 to 4 PSI at most. The filter is also NSF-certified, which was one of the main reasons I chose to purchase it. Overall, I am very satisfied with the product; my only concern is the inadequate packaging during shipping.
Review: Gets the job done - I get municipal drinking water with 1-2ppm of of chlorine (as much as a public pool) and 22 grains of hardness (more than 2x what's considered "extremely hard"). When I had a water softener installed in my house, I also had a Pentek 20" Big Blue Housing installed before softener. I wanted the carbon filter for a few reasons: 1) Keep chlorine out of the shower and bath, out of my family's lungs and off of our skin 2) Keep chlorine out of the washing machine where it bleaches our clothing 3) Protect the resin in the water softener, which should double it's life 4) Protect the plumbing (PEX pipes, rubber in fixtures, etc...) from chlorine 5) Remove the small amount of sediment that is in the city water which collects in valves and fixtures I previously used the Pentek RFC20-BB Radial-Flow Granular Activated Carbon Cartridge . In comparison, this filter is less expensive, has a finer sediment filter (5 micron vs. 25 micron) and it's rated for up to 180F. Also, carbon block filters don't have the same channeling issues as GAC filters, which become less effective at higher flow rates. However, compared to the RFC20-BB this filter can't handle as much water (only 40,000 Gal. vs. 70,000 Gal.) and has a bigger pressure drop (5.5 psi @ 5 gpm vs. 0.9 psi @ 4 gpm). Neither of those were a big concern for me. We use less than 1,000 gal/week so the capacity easily exceeds the 6 month replacement cycle. As for water pressure, I get a solid 60+ psi coming into my house and even a 10 psi drop is not noticeable. If you already have pressure issues, get RFC20 instead.

## Features

- CLEANER, BETTER-TASTING WATER - Bonded powdered activated carbon block reduces chlorine taste and odor along with other unwanted tastes and odors, giving your whole home fresher water from a single 20-inch cartridge.
- HIGH-POROSITY, HIGH-CAPACITY DESIGN - The high-porosity carbon block keeps flowing as it works, so more of the carbon is used before the cartridge plugs; a polyolefin outer wrap traps sediment to extend cartridge life.
- TESTED AND CERTIFIED - The EP-20BB is tested and certified by NSF International to NSF/ANSI Standard 42 for material requirements; the nominal 5-micron block captures fine sediment while reducing taste and odor.
- FITS 20-INCH BIG BLUE HOUSINGS - Measures 20" x 4.5" and fits all 20-inch Pentair Pentek Big Blue and other heavy-duty housings; drops in to replace any 20" x 4.5" carbon block cartridge.
- 44,000-GALLON CAPACITY, 4-PACK - Each cartridge delivers up to 44,000 gallons at a low 2 psi drop at 4 gpm; this value 4-pack keeps a year and more of replacements on hand. Replace about every 12 months or when taste returns.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09MSWNKSK |
| Best Sellers Rank | #15,005 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #107 in Replacement Under-Sink Water Filters |
| Brand | Pentek |
| Brand Name | Pentek |
| Customer Reviews | 4.7 out of 5 stars 1,078 Reviews |
| EU Spare Part Availability Duration | 1 years |
| External Testing Certification | ANSI, NSF |
| Global Trade Identification Number | 30051678583433 |
| Item Dimensions D x W x H | 4.5"D x 4.5"W x 20"H |
| Item Type Name | Everpure Full Flow Drinking Water System |
| Item Weight | 26.5 pounds |
| Manufacturer | Pentair |
| Manufacturer Part Number | 155583-43-APC |
| Manufacturer Warranty Description | 30 day manufacturer |
| Material | Polypropylene (PP) |
| Material Type | Polypropylene (PP) |
| Model Number | EP-20BB |
| Number of Items | 1 |
| Product Benefits | Reduces Chlorine |
| Product Dimensions | 4.5"D x 4.5"W x 20"H |
| Set Name | 4-pack |
| Unit Count | 1 Count |

## Product Details

- **External Testing Certification:** ANSI, NSF
- **Item Weight:** 26.5 Pounds
- **Material:** Polypropylene (PP)
- **Product Benefits:** Reduces Chlorine
- **Product Dimensions:** 4.5"D x 4.5"W x 20"H

## Images

![Pentair Pentek EP-20BB Big Blue Carbon Block Water Filter, 5 Micron - Image 1](https://m.media-amazon.com/images/I/81f7hvxThNL.jpg)
![Pentair Pentek EP-20BB Big Blue Carbon Block Water Filter, 5 Micron - Image 2](https://m.media-amazon.com/images/I/81Nl6X4thyL.jpg)
![Pentair Pentek EP-20BB Big Blue Carbon Block Water Filter, 5 Micron - Image 3](https://m.media-amazon.com/images/I/81cTYn-h3nL.jpg)
![Pentair Pentek EP-20BB Big Blue Carbon Block Water Filter, 5 Micron - Image 4](https://m.media-amazon.com/images/I/61qZ6hYaZ4L.jpg)
![Pentair Pentek EP-20BB Big Blue Carbon Block Water Filter, 5 Micron - Image 5](https://m.media-amazon.com/images/I/71ZZBSPbwML.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent filter!
*by C***A on July 1, 2026*

I used this filter with a Pentair Big Blue housing as part of my water filtration system. Unfortunately, after plumbing was done and when I took the filter out, I discovered that the blue rim on one end of the filter was broken. The damage was not visible until I removed the filter from its packaging. This is not a defect of the filter itself; rather, Amazon needs to ship these filters more securely, perhaps with bubble wrap or additional protective packaging. Fortunately, Amazon made it easy to request a replacement. The replacement arrived without any defects, but it was still simply placed in a box without much protection, which could easily result in damage during shipping. As for the filter's performance, it has been exceptional. I experienced very little pressure loss—about 2 to 4 PSI at most. The filter is also NSF-certified, which was one of the main reasons I chose to purchase it. Overall, I am very satisfied with the product; my only concern is the inadequate packaging during shipping.

### ⭐⭐⭐⭐⭐ Gets the job done
*by D***R on March 16, 2012*

I get municipal drinking water with 1-2ppm of of chlorine (as much as a public pool) and 22 grains of hardness (more than 2x what's considered "extremely hard"). When I had a water softener installed in my house, I also had a Pentek 20" Big Blue Housing installed before softener. I wanted the carbon filter for a few reasons: 1) Keep chlorine out of the shower and bath, out of my family's lungs and off of our skin 2) Keep chlorine out of the washing machine where it bleaches our clothing 3) Protect the resin in the water softener, which should double it's life 4) Protect the plumbing (PEX pipes, rubber in fixtures, etc...) from chlorine 5) Remove the small amount of sediment that is in the city water which collects in valves and fixtures I previously used the Pentek RFC20-BB Radial-Flow Granular Activated Carbon Cartridge . In comparison, this filter is less expensive, has a finer sediment filter (5 micron vs. 25 micron) and it's rated for up to 180F. Also, carbon block filters don't have the same channeling issues as GAC filters, which become less effective at higher flow rates. However, compared to the RFC20-BB this filter can't handle as much water (only 40,000 Gal. vs. 70,000 Gal.) and has a bigger pressure drop (5.5 psi @ 5 gpm vs. 0.9 psi @ 4 gpm). Neither of those were a big concern for me. We use less than 1,000 gal/week so the capacity easily exceeds the 6 month replacement cycle. As for water pressure, I get a solid 60+ psi coming into my house and even a 10 psi drop is not noticeable. If you already have pressure issues, get RFC20 instead.

### ⭐⭐⭐⭐⭐ Great filters and great price
*by A***I on July 12, 2025*

These filters were quite similar to the ones installed by Culligan. Quality seems great, it’s easy to install yourself, and the water flow issue was resolved by replacing old filter by this filter brand.

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-31*