Woder Advanced HM and Lead Removal Dual Filtration System

Heavy metals are present in all water supplies. Our Lead Removal Cartridge is specifically formulated for communities and households where water testing has confirmed heavy metal concentrations exceeding the EPA’s Maximum Contaminant Levels (MCLs).

WQA-Certified Woder WD-GEN4-2512TC Cartridge (WD-G4-REP, 2nd stage of this system) is WQA certified to NSF/ANSI 42 for Chlorine taste, odor and NSF/ANSI 372 for lead free compliance as verified and substantiated by test data.

Product Specifications:

Removal Capabilities: Our advanced Lead Removal cartridge removes 99.9% of lead, heavy metals, chlorine and chromium 6. In addition it also removes mercury, volatile organic compounds, carcinogens, and other contaminants. It also remove turbidity, odor, and bad tastes (claims tested by CLB Labs and are not certified by WQA).

Product Dimensions: 15.1″ X 7.25″ (12.25″ space needed with the hoses) X 2.52″

Capacity:
WD-HMG4-REP Cartridge – Dependent on heavy metals levels in your water.
WD-G4-REP Cartridge – Woder Gen4 Advanced Filtration.

Cartridge lifespan: 1 year under warranty.

Application: Residential Point of use (POU). For residential areas with very high levels of heavy metals in the water.

System includes:
WD-HMG4-REP cartridge (First stage, capacity depends on HM levels) and WD-G4-REP cartridge (Second stage, WQA Gold Seal Certified). Head with dual, built-in shut off valves, inlet hose (3/8 female compression by 1/4 standard pipe thread), outlet hose (3/8 m compression by 1/4 standard pipe).

Common applications include;
Point of use(POU) under sink water filtration system (direct connect to municipal treated cold-water supply hose)

Selective Filtration™
Our proprietary Selective Filtration™ technology removes 99.9% of contaminants while leaving in all essential minerals. Reverse Osmosis (RO) filters also remove 99.9% of contaminants, however, RO also remove ALL the minerals found in tap water – including minerals your body needs. RO systems can waste thousands of gallons of water annually while flushing contaminants down the drain.

Two-Stage Heavy Metal & Lead Removal Under-Sink Filter (WD-D-HMG4-G4-DC)

The WD-D-HMG4-G4-DC is our two stage under sink water filter for households facing more severe or persistent heavy-metal contamination than our single-stage combo model is sized for. It runs a dedicated first-stage heavy-metal cartridge ahead of the standard Gen4 Advanced media, giving you an advanced heavy metals water filter with more capacity specifically for lead, arsenic, and related contaminants, rather than folding that media into a single combined cartridge.

Dual-Stage vs. Single-Stage: Why Choose More Capacity

The natural question is why choose this over our single-stage WD-HMG4-DC. The answer comes down to capacity and severity. A dual stage hm water filter like this one uses a first-stage cartridge sized independently of the Gen4 stage, which means more dedicated heavy-metal removal media doing that specific job. For households with confirmed higher contamination levels, that extra capacity matters more than it would for milder cases. This is what we mean when we describe it as a heavy metals water filtration system built for more demanding situations.

On lead specifically, this system is one of our most capable options. An advanced lead water filter setup like this pairs dedicated first-stage media with Gen4’s own lead reduction, giving two separate opportunities to pull lead out of the water before it reaches your glass. If you’re comparing a dual stage lead water filter against our standard combo model, the dual-stage design is the more thorough option when a water test has confirmed elevated levels. As a lead water filtration system, it’s built specifically for that use case rather than general-purpose filtration.

Lead Reduction and Installation

Installation direct-connects to your existing under-sink cold-water valve, no drilling required, following the same process as our other Direct Connect products. As a heavy metals removal water filtration system and lead removal water filtration system in one, it’s meant to be the more serious option in our lineup without being any harder to install than our standard filters. This filter is designed and packaged in the USA.

Frequently Asked Questions

When should I choose the dual-stage system over the single-stage HMG4 filter?

The dual-stage system is the better fit when a water test shows more severe or persistent heavy-metal contamination, since its dedicated first-stage cartridge carries more capacity than the combined media in our single-stage model.

What contaminants does this two-stage system remove?

The first stage targets heavy metals and lead specifically, while the second Gen4 Advanced stage adds broader reduction of chlorine, PFAS, and other common contaminants.

How is this installed under the sink?

It direct-connects to your existing cold-water valve, the same install process as our other Direct Connect systems, with no drilling required.

Is this filter WQA certified?

Only the second-stage Gen4 Advanced cartridge carries WQA Gold Seal certification. The first-stage heavy-metal media is tested separately, and we keep that distinction accurate on every product page.