Pure, clean drinking water for your home. Reverse osmosis systems remove 99.9% of contaminants including PFAS, lead, microplastics, and chlorine. Undersink, countertop, and premium options with professional installation available.
Reverse osmosis (RO) is the gold standard of home water purification. It works by forcing water through a semi-permeable membrane with pores so tiny (0.0001 microns) that virtually nothing passes through except pure water molecules. Dissolved salts, heavy metals, chemicals, bacteria, viruses, microplastics — they're all left behind.
Modern RO systems go beyond just the membrane. They typically include multiple filtration stages: a sediment pre-filter catches particles, an activated carbon filter removes chlorine and organic chemicals, the RO membrane handles everything else, and a final post-filter (often with remineralization) polishes the water and adds back beneficial minerals for taste.
The result? Water that's 99.9% pure, tastes incredibly clean, and is free from the contaminants that make headlines — PFAS, lead, microplastics, chromium-6, and hundreds more. All from a compact system that fits under your kitchen sink.
Find the right water filtration system for your home and budget
Hidden under your sink with a dedicated faucet. The most popular choice for permanent, whole-kitchen water purification.
No installation required — connects to your existing faucet. Perfect for renters or anyone who wants portability.
Advanced tankless design with smart monitoring, UV sterilization, and alkaline remineralization. The best water possible.
Keep your system running at peak performance. Genuine replacement filters for all Waterdrop models.
Not all water filters are created equal
| Feature | Reverse Osmosis | Pitcher Filter | Fridge Filter |
|---|---|---|---|
| PFAS Removal | Yes (90-99%) | No | No |
| Lead Removal | Yes (99%+) | Partial (some models) | Partial |
| Microplastics | Yes (99%+) | No | No |
| Chlorine/Taste | Yes | Yes | Yes |
| Fluoride | Yes | No | No |
| Total Contaminants | 1,000+ | 5-15 | 5-20 |
| Cost Per Gallon | $0.03-$0.06 | $0.15-$0.30 | $0.10-$0.20 |
| Flow Rate | Fast (tankless) | Slow (gravity) | Moderate |
| Annual Filter Cost | $30-$80 | $40-$80 | $40-$60 |
Pitcher filters are better than nothing, but they only scratch the surface. If you want real protection from the contaminants that matter most — PFAS, lead, microplastics — reverse osmosis is the only reliable option.
Comprehensive protection against 1,000+ contaminants
California has some of the most contaminated tap water in the nation
Clean water isn't just about taste — it's about protecting your health and your family's health from contaminants that accumulate in your body over time:
Shop RO systems, countertop filters, and replacement cartridges
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