The best drinking water you’ll ever have — right at your kitchen sink.
The Ultrefiner Elite is the top-tier reverse osmosis system in the RainSoft lineup — engineered for exceptional taste and powerful contaminant reduction including lead, arsenic, VOCs, and Total PFAS.
A five-stage system designed to work together
Reverse osmosis pushes water through a semipermeable membrane with pores so small that contaminants down to a single ion are filtered out. The Ultrefiner Elite layers that membrane between four other purification stages — so the membrane lasts longer and water tastes cleaner.
Sediment Pre-Filter
Captures sand, silt, rust, and fine particles.
Carbon Pre-Filter
Strips chlorine before it can damage the RO membrane.
RO Membrane
Reduces dissolved solids, lead, PFAS, fluoride, arsenic, and more.
Carbon Polish
Final activated carbon stage neutralizes any remaining taste or odor.
Faucet & Tank
Pressurized tank under your sink. Dedicated faucet on the counter.
Reverse osmosis, explained in under three minutes
A short walkthrough of how reverse osmosis pulls contaminants out of your water — and why it works so well at the kitchen sink.
What separates the Elite from a typical under-sink RO
One of the most-certified residential RO systems
Tested to NSF/ANSI 42, 53, 58, and 401 — including Total PFAS via NSF/ANSI 53 (IAPMO R&T). Most over-the-counter systems carry a fraction of these.
Premium membrane with high contaminant rejection
RainSoft’s top-tier membrane delivers higher rejection of dissolved solids, with extra-capacity pre- and post-filter housings that extend service intervals.
Built for real homes, not catalog photos
Heavy-duty housings, pressurized storage tank, and quick-connect cartridges that make filter changes clean and fast.
Backed by Pure H2O
Local installation by trained RainSoft technicians, filter-change reminders, and 26 years of in-state service backed by 1,000+ Google reviews.
Built for the contaminants modern homeowners actually worry about
Owning the Elite costs less than you’d expect
Fewer filters than the industry average. Cartridge-only replacements. A lifetime manufacturer warranty. Real Ohio service. The Ultrefiner Elite is engineered to keep saving you money long after install day.
99% contaminant removal
Up to 99% reduction across many certified contaminants — depending on incoming water, configuration, and proper maintenance.
3 cartridges to maintain
Two outer filters change annually, plus the RO membrane every 3–5 years. Cartridge-only replacement means less waste and lower lifetime cost.
Lifetime limited warranty
Backed by RainSoft’s manufacturer warranty for the first purchaser at retail.
Lead-free, certified faucet
The dedicated RainSoft faucet is lead-free and available in a range of certified finishes — chosen at install to match your kitchen.
Whole-home filters protect your shower. RO protects what you swallow.
Whole-home filtration improves what you bathe in. RO at the kitchen tap is the gold standard for the water you actually drink and cook with.
- Less plastic-bottle dependency.
- Great for families: baby bottles, pets, and the food you cook.
- Simple ownership: easy filter changes, long-term performance.
How the Ultrefiner fits a whole-home setup
EC5 Softener
Whole-Home HardnessEliminates hard water scale at the point of entry. Softer feed water means longer-lasting RO membranes.
QRS Filter
Whole-Home ChemicalsRemoves chlorine and VOCs from every tap before they reach the RO system.
Ultrefiner Elite
Drinking Water PolishThe final stage. Reduces PFAS, lead, fluoride, and dissolved solids for bottled-water quality at the sink.
Real stories from real Ohio customers
“We stopped buying bottled water completely. Coffee tastes better, ice is crystal clear, and the kids drink water from the tap now.”
“The water test showed our PFAS levels were elevated. The Ultrefiner Elite handled it. Pure H2O explained the science without scaring us.”
“Install was clean and quick. Filter changes are simple — quick-connect cartridges, no mess. Service team is exactly the same way.”
Questions Ohio homeowners ask us
