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Most homeowners don’t mind drinking clean water until they notice an objectionable taste, odor, or build-up from minerals and chlorine. Tap water can contain contaminants, excess minerals, and chlorine that affect both taste and quality, and upgrading to a reverse osmosis system is one of the most effective ways to improve it. Currently, the The WaterDrop G3P800 Tankless Reverse Osmosis System lists at $849 (Was $999), discount applied when you enter code (WDG3P800) at checkout.
Waterdrop has built a strong reputation for designing Reverse Osmosis Units that combine advanced filtration technology with sleek, space-saving designs that fit easily under the sink. A drop of water Also offers an upgraded version with features like UV sterilization, remineralization and smart system monitoring. Some of those advanced options are included below, along with bundled kits that extend filter life and reduce long-term maintenance.
Note: Enter the promo code listed at checkout to receive the discounted price shown.
Our favorite waterdrop spring deals
Waterdrop G3P800 Tankless Reverse Osmosis System
Photo: Waterdrop
This tankless reverse osmosis system provides fast, high-capacity filtration while saving under-sink space with a compact design. It’s a solid entry into Waterdrop’s premium lineup, and additional G3P800 variants add features like remineralization, UV sterilization, and extended filter kits for even more flexibility.
More discounts on waterdrop filter systems
If you are still looking for the right reverse osmosis unit, check out these waterdrop models that come with various features to suit individual needs.
G3P800 series
Use discount code: WDG3P800
G3P600 series
Use discount code: WDG3P600)
K6 series
Use discount code: WDK6
X series high-capacity smart systems
Use discount code: WDX8
Entry-level systems
Use discount code: WDD6





