Pure-75 Filter Replacement Kit (Complete Set with Membrane)
The complete cartridge refresh for the Pure-75: 1 sediment, 2 carbon block, and the 75 GPD membrane, all quarter-turn quick-change with no water shutoff.
Pure-75 Filter Replacement Kit (Complete Set with Membrane)
The complete cartridge refresh for the Pure-75: 1 sediment, 2 carbon block, and the 75 GPD membrane, all quarter-turn quick-change with no water shutoff.
Not sure which cartridges are due, or what fits your system?Tell Aidan when you last changed filters (or text a photo of your system) and he will confirm exactly what you need: the complete kit, just sediment + carbon, or the optional alkalinity remineralization cartridge. No guesswork, no buying cartridges you do not need.
✓1 x sediment filter (5 micron) - quarter-turn quick-change cartridge
✓2 x carbon block filters - one pre-filter (membrane protection), one post-filter (taste polish)
✓1 x 75 GPD TFC reverse osmosis membrane - the dissolved-solids workhorse
✓Free shipping to all lower 48 states
Fits the Pure-75 only. These Twist & Loc quick-change cartridges fit the Pure-75 Reverse Osmosis System. If you have a different RO unit, call or text 800-460-5810 and we will identify the right cartridges for it.
Replacement Schedule
Cartridge
Interval
Why
Sediment filter
Every 6 months
Catches sand, silt, and rust before they load the carbon
Carbon block (pre)
Every 6 months
Removes chlorine that would damage the membrane
Carbon block (post)
Every 6 months
Final taste and odor polish at the faucet
RO membrane (75 GPD)
Every 24 months
Does the dissolved-solids removal; protected by the filters above
How a Change Works
Quarter-twist the old cartridge - it disengages and the flow stops automatically. No water shutoff, even under full pressure.
Twist the new cartridge in until it locks.
Run the faucet for a few minutes (and after a membrane change, drain the first tank) to flush the new cartridges.
Between membrane changes you only need sediment + carbon cartridges. Call or text 800-460-5810 to order individual cartridges, including the optional alkalinity remineralization cartridge for mineral-added taste.
Every Pure-75 cartridge position covered, membrane included
An RO system is only as good as its filter schedule. The carbon pre-filter is what stands between chlorine and the membrane, the sediment filter is what keeps grit out of everything downstream, and a membrane that is protected on schedule lasts its full 24 months. This kit is the complete refresh for the Pure-75: one sediment filter, two carbon blocks, and the 75 GPD TFC membrane, all in the quarter-turn Twist & Loc quick-change format.
Changes take seconds per cartridge with the water still on, even under full pressure. No housing wrench, no sump of water to dump, no o-rings. The sediment and carbon cartridges go in every 6 months and the membrane every 24 months, so this kit covers the membrane-change year; in between, order just the sediment and carbon cartridges by phone or text at 800-460-5810, along with the optional alkalinity remineralization cartridge if you want mineral-added taste.
✔Complete Set with Membrane
✔Quarter-Turn Quick Change
✔No Water Shutoff Needed
✔1 Sediment + 2 Carbon + 1 Membrane
✔Fits the Pure-75 System
✔ Expert Filter & Maintenance Support
From identifying cartridges to walking you through your first quarter-turn change to setting up reminder schedules, Aidan provides hands-on support at every step. Real person, real expertise, 30+ years of water treatment experience. No bots, no scripts.
📞 Call Us800-460-5810
✉️ Email Supportsupport@midatlanticwater.net
🕒 Live Hours7 days a week
Frequently Asked Questions
Four cartridges: 1 sediment filter, 2 carbon block filters (the pre-filter and the post-filter), and 1 x 75 GPD TFC reverse osmosis membrane. That is every cartridge position in the Pure-75 system, so this kit is a complete refresh, including the membrane that most 'replacement packs' make you buy separately.
The sediment filter and both carbon blocks change every 6 months. The membrane changes every 24 months. So this complete kit lines up with the membrane-change year: install everything at once and the whole system is fresh. For the 6-month changes in between, you only need sediment and carbon cartridges, which we ship individually: call or text 800-460-5810 to order.
No. Every cartridge in this kit is the Twist & Loc quick-change design: a quarter twist of the wrist disengages the old cartridge and the flow stops automatically, even with the system under full pressure. Twist the new one in until it locks. No housing wrench, no spilled sump water, no o-rings. A complete change of all four cartridges takes under 2 minutes.
Yes. The membrane only changes every 24 months, so between membrane changes you just need the sediment and carbon cartridges. We sell individual cartridges by phone and text at 800-460-5810, including an optional alkalinity remineralization cartridge that adds minerals back after the membrane for people who prefer mineral-added taste.
This kit fits the Pure-75 Reverse Osmosis System, which uses the quarter-turn Twist & Loc quick-change cartridge format. It does not fit standard-housing RO units or other quick-change formats. Not sure what you have? Send a photo of your system to 800-460-5810 by text and we will identify the right cartridges before you order.
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Pure-75 Filter Replace...$195.00
Why This Kit Costs More Than Generic Cartridges
A complete, guaranteed-fit set with the membrane included
What you get with generic marketplace cartridges
Generic 'compatible' RO cartridges sold on marketplaces are a lottery: quick-change formats are not interchangeable between brands, listings rarely say which systems they actually fit, and most 'replacement packs' quietly exclude the membrane, the one cartridge that does the dissolved-solids work. Order wrong and you are repacking boxes instead of drinking water.
There is also no one to call. If a cartridge will not seat or the water tastes off afterward, a marketplace seller is not walking you through it.
The Real Cost Comparison
Generic Marketplace Cartridges
$40 - $120
❌Lifespan: Fails in 3-4 years
❌Result: Frequent repairs, poor water quality, leaks
❌Support: None
Fit lottery, membrane usually excluded, no support
Best Long-Term Value
Pure-75 Complete Kit
$195
✅Lifespan: Lasts 15+ years
✅Result: Done right the first time, peace of mind
✅Support: Lifetime USA Support
All 4 positions incl. membrane, guaranteed fit, 7-day support
Spread over the membrane's 24-month life, this complete refresh works out to roughly 27 cents a day for water your family drinks every day, with zero fit risk and a 2-minute change. That is the honest math, and if you only need the 6-month sediment + carbon set, call us and spend less.
What you get with this kit
All four cartridge positions in the Pure-75 covered in one box: 1 sediment, 2 carbon blocks, and the 75 GPD TFC membrane, in the exact Twist & Loc quick-change format the system uses. Guaranteed fit, quarter-turn changes with no water shutoff, and a real person at 800-460-5810, 7 days a week, if anything is unclear.
Between membrane changes you only buy the cheaper sediment + carbon cartridges individually, so you are never paying for a membrane you do not need.
Contact Us
800-460-5810
We're here to help.
30-Day Return Policy
30 days from delivery to make sure it's right for your setup
If you're not satisfied with the Pure-75 Filter Replacement Kit within 30 days of delivery, contact us and we'll arrange the return. You'll get a full refund of the purchase price once it is back in our warehouse. No restocking fees on unopened items, and no runaround.
10,000+Systems Installed
455+Verified Reviews
30+Success Rate
We have been helping homeowners solve water problems for over 30 years, and we would rather confirm fit before you order than process a return after. Call or text 800-460-5810 with your system's make and model and we will verify compatibility in two minutes. If something still is not right, the 30-day window has you covered.
The Industry "Return Policy" Trap
+
Many online retailers technically accept returns, but the fine print requires you to pay return shipping and then deducts a 15-25% restocking fee. It is a return policy designed to discourage returns.
Ours is different: contact us within 30 days, we provide return instructions, and unopened items carry no restocking fee.
How Our 30-Day Return Works
1
Contact Us Within 30 Days
Call, text, or email within 30 days of delivery to start the return. We'll ask a few quick questions about the item's condition.
2
We Send Return Instructions
This ships back as an ordinary parcel - no freight logistics. We walk you through repacking it.
Refund Issued, No Restocking Fee
Once the item is back at our warehouse and inspected, we issue a full refund to your original payment method. No restocking fees on unopened items.
The most common mistake with replacement filters is ordering a set that does not fit your system. Text me a photo of your RO unit before you order and I will confirm these are the right cartridges. If anything is still wrong, 30 days, no restocking fee on unopened kits, no hard feelings.
