Coffee Lovers 5-Stage Under-Sink RO Drinking Water System
SKU 45-0006Or 4 interest-free payments — see options at checkout.
- Founded 1985
- Built in Tempe AZ
- In-house membranes
- Lifetime support
Built to order — please allow 2–3 weeks for delivery.
The Coffee Lovers System is the only RO drinking water system we make that actually puts minerals back in the water. Coffee tastes terrible brewed with zero-TDS water — flat, sour, hollow. The CLS-90 strips your water clean through RO, then runs it back through a patented dual-pass remineralization stage to land at roughly 50 TDS and pH ~8. That's the sweet spot for espresso, pour-over, drip, or anything else you brew.
Features
- Patented dual-pass remineralization technology (U.S. Patent #7,303,666) — 7 virtual filtration stages
- 90 GPD RO membrane plus 4 stages of pre- and post-filtration
- Targeted output: ~50 TDS, pH ~8 — ideal for coffee extraction
- Dual TDS meters for input and output water quality monitoring
- Passive permeate pump — no electricity needed
- 4-gallon storage tank with deluxe high-flow air-gap faucet
- Compact wall-mount or under-sink installation
- All install hardware included: fittings, adapters, tubing, manual
Specs
- Production: 90 GPD at 60 psi, 77 °F
- Output water: ~50 TDS, pH ~8 (dual-pass remineralization)
- Patent: U.S. #7,303,666 dual-pass technology
- Stages: 5 physical filtration stages (7 virtual via dual pass)
- Tank: 4-gallon
- Faucet: deluxe air-gap, high-flow
- Warranty: 1 year
Related products
- Replacement cartridges: Drinking Water System Cartridge Replacement Kit
- Standard drinking water: DWS 90 GPD
- Browse all drinking water systems
Questions about water chemistry for coffee or which system fits your setup? 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.