Product comparison · Reverse Osmosis
Aquasure Premier Advanced Alkaline 75 GPD vs Express Water ROELITE9
The Aquasure Premier Advanced Alkaline 75 GPD scores 5.8 and ranks 44th of 69 in Reverse Osmosis; the Express Water ROELITE9 scores 6.1 and ranks 27th of 69 in Reverse Osmosis. The Premier Advanced Alkaline 75 GPD leads on value, the ROELITE9 on build quality.
All 30 Aquasure products 
Aquasure Premier Advanced Alkaline 75 GPD
$220 · 44th of 69 in Reverse Osmosis
- Value — 7 against 5
5.8
6.1
All 24 Express Water products 
Express Water ROELITE9
$307 · 27th of 69 in Reverse Osmosis
- Build Quality — 7 against 6
Across everything we scored, Express Water ROELITE9 sits 0.31 ahead — led by build quality.
Verdict
ROELITE9 ahead · +0.31 (6.1 vs 5.8)Pick the Aquasure Premier Advanced Alkaline 75 GPD when
Value matters7vs5
Ease of installation matters6vs5
Price matters$220vs$307
Pick the Express Water ROELITE9 when
Build quality matters7vs6
Where the Aquasure Premier Advanced Alkaline 75 GPD and Express Water ROELITE9 differ
Scores on a 0–10 scale. Each row is one criterion, biggest difference first.
Build Quality
+1 Express WaterEase of Installation
+1 AquasureContaminant Reduction
tiedCertification Coverage
tiedFlow Rate
tiedFilter Life
tiedWarranty & Support
tiedWhat Aquasure Premier Advanced Alkaline 75 GPD and Express Water ROELITE9 owners report
Independent sources, scored for each model. Premier Advanced Alkaline 75 GPD on 5 of five, ROELITE9 on 4.
The Aquasure Premier Advanced Alkaline 75 GPD reading covers its product line; the Express Water ROELITE9 reading covers its product line.
What they say
Aquasure Premier Advanced Alkaline 75 GPD
- Two r/WaterTreatment and r/HomeMaintenance threads cover the Premier RO platform this system is built on.
- One owner reports 420 ppm TDS at the faucet on a new install, settling to about 360, which is a poor rejection figure; the second describes the Flowlok leak-detection disc deploying during a filter change when a drain-line fitting leaked, which reads as the safety feature working.
- Nothing addresses the alkaline stage specifically, and the subreddit's general scepticism about alkaline water claims is background rather than evidence about this unit.
Express Water ROELITE9
- r/HydroHomies concludes Express Water's alkaline filtration does produce alkaline water but that strength drifts over cartridge life, which bears directly on a model sold on five mineral stages.
- Wider r/WaterTreatment threads recommend the platform for taste and value while calling the install involved.
- No thread names the Elite specifically.
The Aquasure Premier Advanced Alkaline 75 GPD reading covers the whole brand; the Express Water ROELITE9 reading covers its product line.
What they say
Aquasure Premier Advanced Alkaline 75 GPD
- Modernize and Quality Water Lab cover Aquasure through the Harmony softeners.
- Dominick Plumbing notes the absence of NSF certification across the brand.
- No third-party review of the Premier RO systems exists.
Express Water ROELITE9
- WaterFilterGuru bench-tested the platform's RO5DX with Tap Score lab analysis at 8.13 overall and measured a remineralisation stage lifting pH to 9.0.
- TapWaterData's certification audit records no certifier listing for the Elite, so its mineral claims rest entirely on Express Water's own data.
YouTube
one side unscoredThe Aquasure Premier Advanced Alkaline 75 GPD reading covers its product line; no usable source for the Express Water ROELITE9.
What they say
Aquasure Premier Advanced Alkaline 75 GPD
- IrixGuy's Adventure Channel, 98,800 subscribers, has two independent owner reviews of the Premier RO - one after several months at 6,100 views and a several-years follow-up - and a separate third-party self-install walkthrough covers the same 4-stage system.
- None names a specific capacity, so this is the Premier line rather than this model.
- The alkaline stage is not addressed in any of them, and the RO roundups that bench-test at this price point do not include Aquasure.
- Brand-level coverage is the Harmony softeners: DIY Homestead Projects at roughly 115,000 views, NKP Home Improvement at roughly 94,000, geminidrums at 15,000 on the fine mesh and IrixGuy's two-year owner review at 13,000.
Express Water ROELITE9
No usable source.
Amazon
+2 Express WaterThe Aquasure Premier Advanced Alkaline 75 GPD reading covers its product line.
What they say
Aquasure Premier Advanced Alkaline 75 GPD
- No separate Amazon listing for the alkaline 75 GPD configuration carries a readable rating; the replacement alkaline cartridge has its own pool and is a consumable, not the system.
- The score falls back to the Premier 75 GPD at 4.4 from roughly 276, which is the same system without the remineralisation stage.
Express Water ROELITE9
- The Elite appears in Amazon's own Express Water comparison table at 4.1 from 40 ratings - a real pool above the ten-review floor, and the lowest-rated reverse osmosis system Express Water sells there.
- Every sibling in the same table reads 4.4 to 4.6, so the gap is the finding rather than noise.
Owner reviews
tiedThe Aquasure Premier Advanced Alkaline 75 GPD reading covers its product line; the Express Water ROELITE9 reading covers its product line.
What they say
Aquasure Premier Advanced Alkaline 75 GPD
- Home Depot lists this alkaline model at 4.0 of 5 from eight reviews, which is below the ten-review floor and not scorable on its own, so the figure used is the standard Premier Advanced at 4.5 of 5 from 41 reviews on the same RO hardware.
- That pool is native, with verified-purchase entries and Aquasure replying under its own support address.
- Scored a point below the standard model because the alkaline version's own eight-review file, thin as it is, points lower rather than higher, and because the 100 GPD Pro at 4.2 from 10 sits between them.
Express Water ROELITE9
- Home Depot, Lowe's and Walmart all stock Express Water reverse osmosis systems, and the platform's listings carry their own review files.
- No retailer listing specific to the Elite was found.
Aquasure Premier Advanced Alkaline 75 GPD vs Express Water ROELITE9: pros and cons
What each one does well, and where it falls short.
Pros 5
Alkaline stage genuinely addresses the flat taste of RO permeate
Same 1.5 to 1 pure-to-drain ratio as the standard Premier, better than most tank RO
Tank, lead-free faucet and full cartridge set included
Quick-twist cartridge changes and Flowlok leak protection
Only thirty dollars over the non-alkaline version
Cons 6
The 8.5 to 10 pH claim has no test data behind it and the upper figure would be unusual in practice
No system-level NSF certification; the Aquasure listing covers membrane materials only
Alkaline water health claims are not supported by evidence and Aquasure leans on them in its copy
75 GPD with a three gallon tank means slow recovery under heavy use
One year warranty against five on the softeners
Its own Home Depot pool sits at 4.0 of 5, the lowest of the Premier range, on eight reviews
Pros 5
Five distinct mineralisation stages rather than the single cartridge used elsewhere in the range
0.0001 micron membrane rated at 100 GPD
Heavier build at 24.7 lbs, roughly double the standard chassis
Standard cartridge sizes despite the premium positioning
Leak-detection and quick-connect fittings carried over
Cons 6
Smaller 2.2 gallon tank than the cheaper systems, so it empties faster in use
No published pH range or mineral output despite being sold on mineral content
No NSF listing
Costs more than the 600 GPD tankless Model 6
One-year warranty
Nine cartridges to track and replace
Aquasure Premier Advanced Alkaline 75 GPD vs Express Water ROELITE9: the numbers
Price, scores and rank, then only the specs that differ. Green marks the side with more.
5.8
44th of 69 in Reverse Osmosis
6.1
27th of 69 in Reverse Osmosis
Removes
Both Chlorine, Fluoride, Heavy metals, TDS, Lead
Aquasure Premier Advanced Alkaline 75 GPDMore
+ Low pH, PFAS, Taste and Odor, Microplastics, VOCs
Express Water ROELITE9
+ Scale, Sediment
SpecAquasure Premier Advanced Alkaline 75 GPDExpress Water ROELITE9
DimensionsNot listed18.5 x 14 x 5 in
Weight23 lb (shipping)24.7 lbs
Same on both
- Filtration Alkaline Remineralization, Carbon Block, Reverse Osmosis, Sediment
- Certifications Not certified
- Flow rate Under 100 GPD
- Filter life 6-12 months
- Warranty 1 Year
- Connection Point of use fitting
- Housing Not specified
- Made in Not stated
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Not sold on either one?
The top-scored and the cheapest other pick from each brand.
More from Aquasure 3 scored in Reverse Osmosis
What’s different
- Filtration: no Alkaline Remineralization
- Removes: adds Sediment
Pick it ifValue matters9vs7
More from Express Water 11 scored in Reverse Osmosis
What’s different
- Filtration: adds Granular Activated Carbon
- Certifications: adds NSF/ANSI 58, NSF/ANSI 372
Pick it ifCertification coverage matters7vs2NSF/ANSI 58 only on the RO5DX
What’s different
- Filtration: adds Granular Activated Carbon
- Removes: no Scale
Pick it ifEase of installation matters9vs5
Aquasure Premier Advanced Alkaline 75 GPD vs Express Water ROELITE9: common questions
Is the Aquasure Premier Advanced Alkaline 75 GPD better than the Express Water ROELITE9?
On our scores, the Express Water ROELITE9 is ahead, 6.1 against 5.8. The Express Water ROELITE9 leads on build quality (7 against 6). The Aquasure Premier Advanced Alkaline 75 GPD leads on value (7 against 5) and ease of installation (6 against 5).
Which is cheaper, the Aquasure Premier Advanced Alkaline 75 GPD or the Express Water ROELITE9?
The Aquasure Premier Advanced Alkaline 75 GPD, at $220 against $307: $87 less.
Which removes more contaminants, the Aquasure Premier Advanced Alkaline 75 GPD or the Express Water ROELITE9?
The Aquasure Premier Advanced Alkaline 75 GPD lists 10 and the Express Water ROELITE9 lists 7, with 5 on both lists. Only the Aquasure Premier Advanced Alkaline 75 GPD lists Low pH, PFAS, Taste and Odor, Microplastics and VOCs.
What do owners say about the Aquasure Premier Advanced Alkaline 75 GPD and the Express Water ROELITE9?
Across 4 independent sources scored for both, the Express Water ROELITE9 is ahead on Reddit, Google and Amazon; Owner reviews is level.
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Scores calculated 16 September 2026 · Products excluded where fewer than two independent sources cover them · How we score