Amazon · Sep 28, 2026
$107 $166
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This Waterdrop whole house filter system is $106.98. That's $59 off list and the best price we could find. It uses a two-stage setup with a sediment filter and a coconut-shell carbon filter to reduce chlorine, lead, and odors throughout the home, and both cartridges meet NSF/ANSI 372 lead-free standards. It ships for free. Buy Now at Amazon
Features
- 5-stage filtration
- withstands pressure of 25-90 PSI
- 1" inlet/outlet
Amazon · Sep 18, 2026
$100 $143
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This Waterdrop gravity-fed water filter system is priced at $100, down from $143. It's a savings of $43 and the best price we could find. The stainless steel tank holds 2.25 gallons and doesn't require electricity or plumbing to install. Its carbon filters can last up to 6,000 gallons before needing replacement. It ships for free. Buy Now at Amazon
Features
- 2.25-gallon water capacity
- Includes two black carbon filters
- Filter lifespan up to 6,000 gallons
- Made from 304 food-grade stainless steel
- Does not reduce TDS level
Target · Sep 17, 2026
$278 $328
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Tankless design saves counter and cabinet space compared to older RO systems, and the 400GPD flow rate keeps up with daily cooking and drinking use without long refill waits. It's $50 off the $328 list price at Target. Buy Now at Target
Features
- 400GPD capacity with 12-second water cup fill time
- 7-stage filtration removes TDS, heavy metals, and chlorine
- Tankless design reduces footprint and prevents secondary pollution
- 1:1 drain ratio saves 300% more water
- LED indicators display filter life and TDS levels