Replacement Filters for the Express Water ROALK10 (Alkaline, 100 GPD) Reverse Osmosis System
Express Water · Alkaline Reverse Osmosis
Replacement Filters for the Express Water ROALK10 (Alkaline, 100 GPD) Reverse Osmosis System
Every filter your system needs — stage by stage — using IPW house-brand cartridges that fit the standard 10" housings and cost a fraction of the OEM parts.
Also fits: Express Water ROALK10 · ROALK10D · ROALK10M · Express Water alkaline
✓ Standard 10" × 2.5" cartridges
Express Water ROALK10 (Alkaline, 100 GPD) Replacement Filters
This system uses standard 10" cartridges and an 1812 membrane. Pick the exact part for each stage below.
Filters by stage
Replace each stage with the exact IPW part below.
1
Sediment pre-filter
5µm polypropylene · 10" × 2.5"
IPW 5M-SED-10×2.5 — $3.50
Replaces genuine OEM: Express Water sediment filter
2
GAC carbon
granular activated carbon · 10" × 2.5"
IPW UDF-10 GAC carbon — $7.99
Replaces genuine OEM: Express Water GAC filter
3
Carbon block
coconut carbon block · 10" × 2.5"
IPW CBC-10-5 carbon block — $8.99
Replaces genuine OEM: Express Water carbon block filter
4
RO membrane
100 GPD thin-film composite
Replaces genuine OEM: Express Water 100 GPD membrane
5
Inline post-carbon polish
10" × 2" coconut GAC inline · ¼" quick-connect
Replaces genuine OEM: Express Water inline post-carbon filter
6
Alkaline / remineralization
10" × 2" multi-mineral alkaline inline · ¼" QC
Replaces genuine OEM: Express Water alkaline mineral filter
When to replace
🪣 Sediment & carbon: every 6–12 months🥤 Post-carbon & alkaline: every 12 months💧 RO membrane: every 2–3 years
✓ Fits the Express Water ROALK10 with standard 10" × 2.5" housings, an 1812 membrane and ¼" tubing — not sure? call (714) 541-6600.
Not sure this is your system? Use the Isopure Water Filter Finder → Match by system name, by the part number printed on your current filter, or by snapping a photo.
Express Water ROALK10 filter FAQ
What filters does the Express Water ROALK10 use?
A sediment filter, a GAC carbon filter and a carbon block (all 10" × 2.5"), a 100 GPD 1812 membrane, an inline coconut carbon post-filter and an inline alkaline mineral filter, both with ¼" quick-connects.
What replaces the alkaline filter?
Our PureTopia IL-10SC-AK-EZ14 is a 10" × 2" inline alkaline filter with mixed mineral media and ¼" quick-connects. It adds minerals back and raises pH after the RO membrane.
How often should I change the ROALK10 filters?
Change the sediment and carbon filters every 6 to 12 months, the post-carbon and alkaline filters about once a year, and the membrane every 2 to 3 years.
Is the ROALK10 the same as the RO5DX?
The first five stages are the same type and size, but the ROALK10 uses a 100 GPD membrane instead of 50 GPD and adds the alkaline filter. Questions? Call (714) 541-6600.
All replacement filters by system · Express Water RO5DX · NU Aqua Platinum 6-Stage Alkaline · Reverse osmosis membranes
Compatibility reference only. Photos of complete systems shown on this page are provided to help you identify your unit and confirm that our filters fit. All brand names, model numbers, and product images are the property of their respective owners; Isopure Water (IPW Industries Inc.) is not affiliated with, sponsored by, or endorsed by these manufacturers. We sell compatible replacement filters and parts — not the branded systems pictured, unless a system is separately listed for sale on our store.
