Woder WD-HMG4-REP Cartridge is similar to our Advanced Woder WD-G4-REP Cartridge but with more Heavy Metal Removal Media for houses / offices with a higher then EPA’s recommended heavy metal rate in their water supply.
It removes 99.9% of lead, heavy metals, chlorine, chromium 6, mercury, volatile organic compounds, carcinogens, and other contaminants – as well as turbidity, odor and bad taste. Capacity depending on the levels of sediment found in your tap water.
The WD-HMG4-REP is a single stage replacement cartridge for:
Woder WD-HMG4-DC Water Filter.
Woder WD-HMG4-JG Water Filter.
The WD-HMG4-REP is a 1st stage replacement cartridge in:
Woder WD-D-HMG4-G4-DC Water Filter.
Woder WD-D-HMG4-G4-JG Water Filter.
Cartridge lifespan: 1 year under warranty.
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 out contaminants down the drain.
Heavy Metal & Lead Removal Replacement Cartridge (WD-HMG4-REP)
For existing owners of our heavy-metal combo systems, the WD-HMG4-REP is the part that keeps that protection going. It’s a water filter cartridge replacement built for our WD-HMG4-DC and WD-HMG4-JG products, combining the same Gen4 Advanced media with dedicated heavy metals removal cartridge performance, packaged as a single reorder so you’re not buying a whole new housing. Anyone running one of these combo systems and due for a swap is exactly who this listing is built for, whether you’re on the under-sink DC housing tucked into your cabinet or the inline JG version feeding a fridge or RV line. Both housings take this same internal media, so there’s no separate part number to hunt down depending on which one you own, ordering the right replacement is a matter of matching your existing product rather than guessing at compatibility.
What It Removes
This part removes the same things your original system did: standard Gen4 contaminants like chlorine and lead, plus the added media targeting arsenic and elevated lead specifically. It’s one of our more specialized replacement water cartridges, functioning as a genuine heavy metals removal replacement cartridge rather than a standard part, since the media combination isn’t shared with our other lines. On certification, it’s worth staying precise: the base Gen4 stage is WQA Gold Seal certified, while the added dual-media replacement cartridge stage is CLB Labs tested performance, a distinction we keep consistent across everything we sell in this category. Neither certification is more important than the other, they simply verify different things, general contaminant reduction on one side and targeted heavy-metal performance on the other, and both matter for anyone relying on this system as their primary line of defense against arsenic and lead in their water supply.
When to Replace It
Knowing when it’s time for replacing water filter cartridge media like this comes down to the usual cues: a drop in flow rate, or simply hitting the part’s expected cartridge lifespan as listed on the product page. Because this part is doing more work than a standard filter, tracking your install date is especially worthwhile here, since waiting for a symptom means you may have already gone a while without full heavy-metal protection. Ordering replacement cartridges for water filters on a set schedule rather than reactively is the more reliable approach for this specific product, since the drop in effectiveness on the heavy-metal side isn’t always as obvious to the senses as a change in taste or flow would be.
How to Replace It
Installing the new part follows your original housing type: DC systems unscrew for a straightforward swap, while JG systems use a push-to-connect change. Either way, our install guides cover the exact steps, and most water filter cartridge replacements of this type take just a few minutes with nothing more than basic hand tools, no plumber and no special training required for either housing style. Ordering a compatible replacement cartridge going forward is just a matter of bookmarking this product page, and this heavy metals removal filter is designed and packaged in the USA.
Frequently Asked Questions
Which Woder systems is this replacement cartridge compatible with?
It’s built for our WD-HMG4-DC (under-sink) and WD-HMG4-JG (inline) heavy-metal combo filters, matching the same Gen4 plus heavy-metal media combination in both.
How often should I replace this cartridge?
Watch for a drop in flow rate, and check the expected lifespan listed on the product page. Given the specialized media, replacing on a set schedule is more reliable than waiting for a symptom to show up.
Is this cartridge WQA certified?
The base Gen4 Advanced media is WQA Gold Seal certified. The added heavy-metal removal media is CLB Labs tested rather than WQA certified, and we keep that distinction accurate across all our heavy-metal products.
