MaxPure® 3-Stage Under-Sink RO Drinking Water System — 90 GPD
SKU 45-0066Or 4 interest-free payments — see options at checkout.
- Founded 1985
- Built in Tempe AZ
- In-house membranes
- Lifetime support
The MaxPure 90 GPD is a more compact version of our standard drinking water system — same NSF-grade filtration, smaller footprint to fit under tighter sinks. 3 stages of filtration, a 4-gallon pressurized tank, and a non-air-gap chrome faucet. Built and tested in Tempe, AZ.
Features
- SpectraPure 90 GPD RO membrane
- 1 micron sediment + 1 micron carbon block pre-filters
- Inline GAC post-filter polishes taste before the faucet
- Non-air-gap chrome faucet — clean look, no air-gap drain to deal with
- 4-gallon pressurized storage tank for on-demand flow
- Pressure gauge for at-a-glance system monitoring
- Auto shut-off (ASO) valve preserves membrane life
- NSF-grade components throughout
Specs
- Production: 90 GPD at 60 psi, 77 °F
- Stages: sediment → carbon block → RO membrane → inline GAC post-filter
- Tank: 4-gallon pressurized with ball valve
- Faucet: non-air-gap chrome, lead-free
- Included: feed adapter with valve, drain saddle, quick-connect fittings and tubing
- Warranty: 1 year
Related products
- Replacement cartridges: Drinking Water System Cartridge Replacement Kit
- Standard footprint version: DWS 90 GPD Drinking Water System
- Add a permeate pump: DWS 90 GPD with Permeate Pump
- Browse all drinking water systems
Questions about filters, production rates, or membranes? Visit our Know Your Filters page or contact us.
Cleaner water for plants, pets, and people
Reverse osmosis membranes reject microplastics, PFAS and "forever chemicals," chlorine and chloramine byproducts, heavy metals, and the dissolved solids that show up as taste and scale. That means cleaner feed water for your plants, animals, business, or family — and a lot less reliance on bottled water, which keeps plastic out of the landfill. Most setups run a 3:1 waste-to-product ratio on hard water and 2:1 on soft water, and can be tuned to 1:1 in high-purity feed areas or with a periodic pure-water flush. The system is built to last with field-serviceable filter housings, so you replace cartridges (not whole units) for years of dependable purity.