Waterdrop promo codes

9 codes and 1 deal checked at Waterdrop checkout by the PickedBox Team. Best right now: $400 off the X16 X Series undersink reverse osmosis system.

waterdropfilter.comPickedBox Team·Last verified October 8, 2026

Lead offerBest offer first · commission does not change the order

$400 off $400 off the X16 X Series undersink reverse osmosis system X16 system only. One code per order. Code · Worked Oct 8, 2026 · listed since Oct 2026 Show code Opens Waterdrop in a new tab. The code appears here.

9 more Waterdrop offers

Best offer first. Commission does not affect the order.

$400 off $400 off the X12 reverse osmosis system X12 system only. One code per order. Code · Worked Oct 7, 2026 · listed since Oct 2026 Show code

$240 off $240 off the G3P800 reverse osmosis system G3P800 system only. Code · Worked Oct 8, 2026 · listed since Oct 2026 Show code

$100 off $100 off the K6 instant hot RO system Eligible products only. Code · Worked Oct 5, 2026 · listed since Oct 2026 Show code

$100 off $100 off eligible Waterdrop purchases Eligible products only. Code · Worked Oct 8, 2026 · listed since Oct 2026 Show code

$90 off $90 off the A2G hot and cold RO water dispenser Eligible products only. Code · Worked Oct 5, 2026 · listed since Oct 2026 Show code

$70 off $70 off the M6HG remineralization instant hot RO system M6HG system only. Code · Worked Oct 8, 2026 · listed since Oct 2026 Show code

$30 off $30 off the M6SL mineral countertop RO system M6SL system only. Code · Worked Oct 8, 2026 · listed since Oct 2026 Show code

Code M6CG hot and cold countertop RO system for $459 M6CG system only. Price applies at checkout with the code. Code · Worked Oct 6, 2026 · listed since Oct 2026 Show code

$20 off Extra $20 off your first order with email sign-up First order only. Waterdrop says it stacks with the current promotion. Deal · Worked Oct 6, 2026 · listed since Oct 2026 Get deal

Waterdrop discount programs

Waterdrop Rewards

Free membership. Earn 10 points per $1 spent (more at higher tiers), get free shipping, birthday bonus points and a monthly $10 off $200+ reward.

Waterdrop Rewards at waterdropfilter.com

Refer a friend

Members share a link; the friend gets 25% off and the member gets a $50 gift card after the friend orders.

Refer a friend at waterdropfilter.com

Military, first responder and other service discounts

Verify through VerifyPass to get a unique code for 15% off.

Military, first responder and other service discounts at waterdropfilter.com

Trade-in program

Trade in an old RO system for credit toward a new X Series or M6 Series system: up to $150 for a Waterdrop undersink system and $100 for another brand.

Trade-in program at waterdropfilter.com

30-day price match

If the price on waterdropfilter.com drops within 30 days of purchase, you can request a price match.

30-day price match at waterdropfilter.com

Email sign-up

Subscribing gives an extra $20 off the first order.

Email sign-up at waterdropfilter.com

When Waterdrop runs sales

A calendar from past years, not a promise. Other home stores on the same dates: Home promo codes.

When	What usually happens
January	Clearance markdowns on older and discontinued models
Late March (World Water Day)	Spring promotion with discounts on filtration systems (March 25 to 31, 2026)
June (Prime Day week)	Waterdrop Day Sale with up to $700 off RO systems (June 23 to 26, 2026)
Labor Day	Labor Day sale with up to $500 off
October (Prime Big Deal Days)	Fall Deals with up to $400 off and model-specific codes (October 8 to 14, 2026)
Black Friday week	Pre-sale with tiered savings from 15% off $300 up to 35% off $2,000 or more

Expired Waterdrop codes

Codes that no longer work, kept with their dates. The code itself opens after the click, and so does Waterdrop.

Was $100 off $100 off your order Expired code · worked until Oct 5, 2026 Show expired code

Was Up to $55 off Up to $55 off Waterdrop deals Expired code · worked until Oct 2, 2026 Show expired code

Was 10% off 10% off your order Expired code · worked until Oct 5, 2026 Show expired code

Questions about Waterdrop codes

Do Waterdrop promo codes work on any product?

Most Waterdrop codes are tied to one model, such as the X16 or G3P800. Add that model to your cart before you enter the code.

Can I combine Waterdrop codes?

Only one promo code can be used per order. The first-order sign-up discount is the exception Waterdrop lists as stackable with a current promotion.

Does Waterdrop offer free shipping?

Yes. Economy shipping (4 to 8 business days) is free on all orders, and standard shipping is free on orders over $200.

What is the Waterdrop return policy?

You can return items within 30 days of receipt with no restocking fee, but you pay return shipping unless the item has a quality issue. Items must be disassembled and repackaged as received.

Does Waterdrop have a military discount?

Yes. Service members and other eligible groups verify through VerifyPass and get a unique code for 15% off.

Can I pay for a Waterdrop filter with HSA or FSA funds?

Waterdrop lists HSA and FSA cards as a payment option at checkout.

Waterdrop shipping, returns and payment

Shipping: Economy shipping (4 to 8 business days) is free; standard shipping (3 to 6 business days) is $5.99 or free over $200; express starts at $10.99. Ships to most US states, not to Puerto Rico or other US territories, and not internationally. Checked October 8, 2026.
Returns: Return within 30 days of receipt with no restocking fee; you pay return shipping unless the item is defective. After 30 days a 10% restocking fee applies. Contact customer service before sending a return. Checked October 8, 2026.
Payment: Credit and debit cards, PayPal, Klarna, HSA/FSA cards, Amazon Pay, Shop Pay, Apple Pay, Meta Pay and Google Pay. Checked October 8, 2026.