--- product_id: 56508479 title: "Waterdrop 3US-AF01 Under Sink Water Filter, Replacement for Standard Filtrete® 3US-AF01, 3US-AS01, Aqua-Pure AP Easy C-CS-FF, WHCF-SRC, WHCF-SUFC, WHCF-SUF, NSF/ANSI 42 Certified, Pack of 2" brand: "waterdrop" price: "£87.59" currency: GBP in_stock: true reviews_count: 13 category: "Waterdrop" url: https://www.desertcart.co.uk/products/56508479-waterdrop-3us-af01-under-sink-water-filter-replacement-for-standard store_origin: GB region: United Kingdom --- # NSF/ANSI Certified Stable Flow Rate: 0.75 gpm Lead-Free Material Waterdrop 3US-AF01 Under Sink Water Filter, Replacement for Standard Filtrete® 3US-AF01, 3US-AS01, Aqua-Pure AP Easy C-CS-FF, WHCF-SRC, WHCF-SUFC, WHCF-SUF, NSF/ANSI 42 Certified, Pack of 2 **Brand:** waterdrop **Price:** £87.59 **Availability:** ✅ In Stock ## Summary > 💦 Drink Smart, Live Fresh! ## Quick Answers - **What is this?** Waterdrop 3US-AF01 Under Sink Water Filter, Replacement for Standard Filtrete® 3US-AF01, 3US-AS01, Aqua-Pure AP Easy C-CS-FF, WHCF-SRC, WHCF-SUFC, WHCF-SUF, NSF/ANSI 42 Certified, Pack of 2 by waterdrop - **How much does it cost?** £87.59 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/56508479-waterdrop-3us-af01-under-sink-water-filter-replacement-for-standard) ## Best For - waterdrop enthusiasts ## Why This Product - Trusted waterdrop brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Certified Safety:** Trust in NSF/ANSI standards for your family's health. - • **Pure Water, Pure Life:** Experience the taste of freshness with every drop! - • **Effortless Maintenance:** Replace every 6 months for optimal performance. - • **Upgrade Your Hydration:** Stay ahead with our advanced filtration technology. - • **Versatile Compatibility:** Fits multiple popular filtration systems seamlessly. ## Overview The Waterdrop 3US-AF01 Under Sink Water Filter is a high-performance filtration solution, certified by NSF/ANSI 42 to effectively reduce chlorine and ensure safe drinking water. Made from premium, lead-free materials, this filter guarantees reliability and safety. With a stable flow rate of 0.75 gpm, it provides consistent filtered water without pressure drops. Designed for easy replacement every 6 months or 6,000 gallons, it fits various popular filtration systems, making it a versatile choice for health-conscious consumers. ## Description Buy Waterdrop 3US-AF01 Under Sink Water Filter, Replacement for Standard Filtrete® 3US-AF01, 3US-AS01, Aqua-Pure AP Easy C-CS-FF, WHCF-SRC, WHCF-SUFC, WHCF-SUF, NSF/ANSI 42 Certified, Pack of 2: Replacement Under-Sink Water Filters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Direct replacement for factory filter - Worked as advertised without issues. Came fast and were less expensive than the Samsung variant. Review: Nice clean water with no oder. - No problems with product, very easy to insert. I usually run the faucet for a couple of seconds to clean out any stagnate water before drinking or use in cooking. Good water flow. ## Features - NSF/ANSI Certified Filter:Tested against NSF/ANSI 42 standards, it effectively reduces Chlorine. Activated carbon block and other advanced filter media ensure efficient and safe filtration. - Authority Guaranteed Material:Specially selected premium materials are lead-free, which is fully certified by the IAPMO against NSF/ANSI 372 standard. The BPA-free, lead-free material ensures more reliable use from the inside out. - Stable Flow Rate: The tested full flow rate for waterdrop water filter is 0.75 gpm. Provides you with stable filtered water without obvious pressure drops.This filter does not reduce TDS! Connected with the cold water valve only! - New upgrade & Keep Water Fresh:After advanced upgrade, the model number is changed from WD-3US-AF01 into WD-W01. To keep your water fresh, replace your filter every 6 months or 6,000 gallons, whichever comes first will vary based on water condition. - Replacement Model:3M Filtrete 3US-AF01, 3US-AS01 system, 3M AP3-765S, 3M AP3-C765, AP Easy C-CS-FF, WHCF-SRC, WHCF-SUFC, WHCF-SUF Filter Cartridge; Fits 3US-AS01 Advanced Under-Sink Filtration Systems, AP Easy CS-FF Under-Sink Filtration Systems. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B075JB1T5Q | | Best Sellers Rank | #97,171 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #685 in Replacement Under-Sink Water Filters | | Brand Name | Waterdrop | | Compatible Water Purifier Models | 3M 3US-AS01 | | Customer Reviews | 4.7 4.7 out of 5 stars (651) | | EU Spare Part Availability Duration | 6 Months | | External Testing Certification | IAPMO | | Included Components | Packaging, Replacement water filter, User Guide | | Item Dimensions D x W x H | 8.6"D x 17.2"W x 27.7"H | | Item Type Name | Replacement Water Filter | | Item Weight | 2.6 Pounds | | Manufacturer | Waterdrop | | Manufacturer Part Number | WD-3US-AF01 | | Material Type | Activated Carbon | | Model Number | WD-3US-AF01 | | Number of Items | 2 | | Product Benefits | Reduces chlorine, taste, odor, and other harmful elements | | Set Name | 2 | | UPC | 840814194362 840814142172 | | Unit Count | 2.0 Count | ## Product Details - **External Testing Certification:** IAPMO - **Item Weight:** 2.6 Pounds - **Material:** Activated Carbon - **Product Benefits:** Reduces chlorine, taste, odor, and other harmful elements - **Product Dimensions:** 8.6"D x 17.2"W x 27.7"H ## Images ![Waterdrop 3US-AF01 Under Sink Water Filter, Replacement for Standard Filtrete® 3US-AF01, 3US-AS01, Aqua-Pure AP Easy C-CS-FF, WHCF-SRC, WHCF-SUFC, WHCF-SUF, NSF/ANSI 42 Certified, Pack of 2 - Image 1](https://m.media-amazon.com/images/I/61HHevnYILL.jpg) ## Available Options This product comes in different **Size, Number Of Items** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Direct replacement for factory filter *by M***I on February 26, 2026* Worked as advertised without issues. Came fast and were less expensive than the Samsung variant. ### ⭐⭐⭐⭐⭐ Nice clean water with no oder. *by J***B on February 9, 2026* No problems with product, very easy to insert. I usually run the faucet for a couple of seconds to clean out any stagnate water before drinking or use in cooking. Good water flow. ### ⭐⭐⭐⭐⭐ Great filters *by R***H on October 31, 2025* Great product --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/56508479-waterdrop-3us-af01-under-sink-water-filter-replacement-for-standard](https://www.desertcart.co.uk/products/56508479-waterdrop-3us-af01-under-sink-water-filter-replacement-for-standard) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-19*