Water filter systems
Shop Woder’s WQA Gold Seal certified, US made water filter systems – under-sink and inline options with Selective Filtration that keeps essential minerals in.
Showing all 23 results
-
High Flow Countertop Gravity Water Filter 3.25 Gallons w 2 Sets (4) of CB9 filters
WD-2XCLB-CGF-3.25$434
Best Sellers
Water Quality Guides & Tips
Learn how to maintain your filter, improve tap water quality, and choose the right filtration system for your home.
Water filter systems
A good water filter shouldn’t force you to give up the minerals that make water taste like water. That’s the thinking behind every product in this category. Each of our water filter systems runs on Advanced Selective Filtration media, engineered to pull out lead, chlorine, and PFAS while leaving calcium and magnesium untouched – a notably different path from ordinary carbon filter systems for water or from reverse osmosis. We split the lineup two ways: Under-Sink Direct Connect systems that install at the cold-water line beneath your kitchen faucet, and Inline John Guest systems that quick-connect to refrigerators, ice makers, and RVs. The filtration technology underneath is identical either way; what changes is where in your home the water actually gets treated.
Under-Sink or Inline?
Want filtered water right at the kitchen tap for drinking and cooking? An under-sink Direct Connect unit is the place to start – it ties into your existing cold-water supply line with zero drilling. If it’s your fridge’s water and ice dispenser you’re after, or you need something for an RV or a standalone cold-water tap, an Inline John Guest system fits better, since it relies on tool-free push-to-connect fittings on quarter-inch tubing. A lot of our customers end up running both: an under-sink filter feeding the faucet and an inline filter guarding the fridge line. Whichever direction you go, you can browse every model in this water systems filter lineup by contaminant concern or connection type right from this page.
Why WQA Certification and US Manufacturing Matter
These aren’t throwaway claims – they’re worth calling out directly. Woder’s base Gen4 Advanced filtration media is WQA Gold Seal certified, and every system we sell is built in the United States. Independently verified performance plus US made water filter manufacturing is what separates our quality water filter systems from imported carbon cartridges that make removal claims with no third-party testing behind them. On products that layer in additional heavy-metal, arsenic, or fluoride removal media alongside the base Gen4 stage, that add-on media is typically CLB Labs-tested rather than WQA-certified – the exact certification for each stage is spelled out on its individual product page.
The Technology Behind Every System
Selective Filtration technology is the registered approach running underneath everything we sell, built to reduce contaminants selectively rather than strip water indiscriminately the way reverse osmosis does. It’s what lets a Woder filter cut down lead, chromium-6, and chlorine while calcium, magnesium, and other minerals stay put – the same approach that makes our water filter systems for well water (and filter systems for well water more broadly) a solid option for households juggling sediment, iron, or mineral hardness on top of standard municipal contaminants. If you’re weighing water purification filter systems in general, this mineral-retaining approach is the biggest thing separating Woder from both basic carbon pitchers and RO under-sink units. Browse Under-Sink and Inline below, or read more on how Selective Filtration works.
Frequently Asked Questions
What is the difference between an under-sink and an inline water filter system?
An under-sink Direct Connect system installs beneath your kitchen sink and filters water at the faucet, while an Inline John Guest system uses quick-connect fittings on quarter-inch tubing to filter water headed to a refrigerator, ice maker, or RV. Both run on the same Advanced Selective Filtration media – the difference is simply where the filtered water comes out.
Are Woder water filter systems WQA certified?
Our base Gen4 Advanced filtration media is WQA Gold Seal certified. On dual-stage products with added fluoride, arsenic, or heavy-metal removal media, that additional stage is CLB Labs-tested rather than WQA-certified, and each product page specifies exactly which claim applies to which cartridge.
Are Woder filters made in the USA?
Yes – every Woder water filter system is manufactured in the United States, which gives us direct oversight of materials and assembly quality instead of depending on overseas production runs.
What does Selective Filtration mean?
Selective Filtration is our registered filtration approach that targets specific contaminants for removal while letting beneficial minerals remain in the water, rather than stripping out everything the way reverse osmosis does.
