As of Oct 27, 2026, 11:53 AM ET, the Waterdrop G3 RO System Replacement Filters - 400GPD is listed online by Waterdrop (waterdropfilter.com) at $89.97–$269.93; the store's feed doesn't report stock.
Waterdrop sells it online at waterdropfilter.com. The price and stock here come from Waterdrop's own product feed, checked Oct 27, 2026.
| Option | Model no. | Price | Online availability | |
|---|---|---|---|---|
| Standard | 39822042071122 | $269.93 | Listed online (stock not reported) | Buy at waterdropfilter.com |
| Standard | 39822042005586 | $89.97 | Listed online (stock not reported) | Buy at waterdropfilter.com |
| Standard | 39822042038354 | $119.96 | Listed online (stock not reported) | Buy at waterdropfilter.com |
Buy links go to the retailer through an affiliate network, and Aisles Ecommerce may earn a commission if you buy. It doesn't change the price. Disclosure.
At Waterdrop it costs $89.97 to $269.93, depending on the option, as of Oct 27, 2026.
Waterdrop's product feed doesn't say whether it's in stock. It lists 3 options at waterdropfilter.com; check there before you buy.
Compatible Model WD-G3-W WD-G3-N1CF Provides up to 6 months or 550 gallons of clean water WD-G3-N3CB Provides up to 12 months or 1,100 gallons of clean water WD-G3-N2RO Provides up to 24 months or 2,2
