Classic
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Single Handle Centerset Bathroom Faucet in Chrome

Model#: 521-ECO-DST-A
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Classic
View Full Classic Bathroom Collection
Single Handle Centerset Bathroom Faucet in Chrome
Model#: 521-ECO-DST-A
List Price: $19170
Add to Favorites
Find local Delta® installers.
PRODUCT FEATURES
Designed for performance, the Classic Bath Collection provides smart technology that will stand the test of time. Delta® faucets with Diamond Seal® Technology perform like new for life with a patented design that reduces leak points, is less hassle to install and lasts twice as long as the industry standard. WaterSense® labeled faucets use at least 20% less water than the industry standard — helping you save water without compromising performance. You can install with confidence, knowing that Delta® faucets are backed by our Lifetime Limited Warranty.
  • Diamond Seal® Technology is less hassle to install and helps your faucet perform like new for life, reducing leak points and lasting twice as long as the industry standard
  • Everything you need is together in one convenient box, including integrated InnoFlex® PEX supply lines
  • Fits 3-hole 4 in. installations
  • Plastic push pop-up drain assembly in matching finish (included) is ADA compliant and simple to install, operate and clean
  • Includes ADA compliant lever handle
  • WaterSense® labeled faucet uses at least 20% less water than the industry standard without compromising performance
  • Rigid spout does not swivel
  • 3/8-inch compression fittings
  • Backed by Delta Faucet's Lifetime Limited Warranty
Special Information
Warning Image
California Prop 65 WARNING
Eco-Friendly
WaterSense® Labeled
Technology and Special Features
ADA Compliant
No-Lead Compliant
Diamond Seal® Technology
Special Information
Warning Image
California Prop 65 WARNING
Documents & Specs
Product Support, Repair Parts & Technical Specifications
View Technical Specifications
View Maintenance & Installation Sheet
View Parts & Accessories Diagram
Register Product
Resources
Design Files
Installation Information
3-hole 4" installation
3-hole 4" installation
Flow Rate :
1.20 gpm @ 60 psi, 4.5 L/min @ 414 kPa
Overall Height (in.) :
5-1/4
Valve Type:
NA

INSTALLATION SUPPORT

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REVIEWS
Rated 2 out of 5 by from Leaks Here we go again. Just got the leaking kitchen faucet fixed and the bathroom starts dripping. Fits since they were installed at the same time 2 years ago. Delta sent me a new cartridge for the kitchen unit which was not a major problem to replace but one needs the right tools. This is not what I want to be doing every two years.
Date published: 2019-03-10
Rated 1 out of 5 by from Cannot install water fittings. Instructions do not match faucet model. Cannot install. Water connections do not insert into outlet fittings, because plastic sleeves are fixed to very end of tubes.
Date published: 2018-12-23
Rated 5 out of 5 by from Works fine, visually very attractive Works fine, visually very attractive!
Date published: 2018-11-12
Rated 5 out of 5 by from Looks great and easy to clean. The curved design leaves no corners for soap film to accumulate.
Date published: 2018-10-30
Rated 4 out of 5 by from great product Happy to have chosen this product
Date published: 2018-04-24
Rated 5 out of 5 by from great product great product. well worth the money. very durable and well built
Date published: 2017-11-21
Rated 2 out of 5 by from Faucet drops Does not completely shut off. Right now has a drop of water ready to drop and faucet has not been turned on for at least 2 days. This should not be happening.
Date published: 2017-08-31
Rated 4 out of 5 by from good practical faucet We like the faucets that we bought. We encountered some issues during installation, but fixed now.
Date published: 2017-06-15
Rated 3 out of 5 by from The product looks great but water pressure through the aerator is less than good. The aerator cuts the faucet water pressure in half, resulting in time-consuming waits to run enough water to completely rinse. Also, faucet sometimes doesn't shut off--have to turn on/off again to get it to completely shut off.
Date published: 2017-05-09
Rated 5 out of 5 by from New and improved. Old standby but with new and improved features including easy installation.
Date published: 2016-11-03
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Q&A

How do you remove the airrator from the faucet. it is clogged with dirt.

Asked by: Pierre
Thank you for your question, Pierre! This model uses a cashe or "hidden" aerator that will require the supplied wrench for removal. https://www.deltafaucet.com/parts-product-detail?modelNumber=RP60730 Best regards, Edward
Answered by: Delta Faucet
Date published: 2024-03-28

what cartrige does a 521-ECO-DST-A faucet take?

Asked by: Robert
Hi Robert, Thank you for your inquiry! The RP50587 Valve Cartridge assembly comes with the Delta Classic Lavatory 521-ECO-DST-A faucet model. https://media.deltafaucet.com/PartsDiagram/DPD-L-500-DST.pdf Best regards, Tanya
Answered by: Delta Faucet
Date published: 2024-03-28

IS THIS faucet metal or plastic

Asked by: eddie
Hi Eddie, Thank you for your question! The faucet body and handle are metal. The internal waterways are PEX tubing. Best regards, Jon
Answered by: DeltaFaucet3
Date published: 2020-01-05

What aerator fits the bathroom faucet 521?

Asked by: JimBro
Hello JimBro, Thank you for contacting us, I would be happy to help you. If the faucet was installed before 2011 then the aerator would be RP60983. If the faucet was installed after 2011 then the aerator would be either RP54977 or RP7111. Please contact us back if you have any questions or need further assistance.  Best Regards,  Nicole
Answered by: Delta7
Date published: 2024-03-28

I brought a replacement 521-ECO-DST-A but it doesn't have a hole in the back for the sink drain rod. Why did you remove this feature from this faucet? Do you make the version of this faucet with the sink drain hole in the back? This is very disappointing

Asked by: Bruce51

Hi! My handle has been loose the last two weeks and today it popped off. I have the metal handle (not crystal). The cartridge looks secure and is still in place and there is no leakage. What do i do?

Asked by: Carisa
Hello Valued Customer, Thank you for contacting Delta Faucet Company! We apologize for the issues you are experiencing and we are happy to help! We have reached out to you directly to further assist you with this matter. We appreciate your inquiry. Please reach out directly if you have further questions! Best Regards, Kyra Digital Communications Specialist
Answered by: Delta
Date published: 2025-03-25

I need the specs for this exact faucet and availability. Model: 521-ECO-DST-A

Asked by: Bob22
Hello Bob22, Thank you for your question! I am happy to help you! I have attached a link to the technical specifications sheet of our Delta 521-ECO-DST-A, Please see the link below. https://media.deltafaucet.com/SpecSheet/DSP-L-521-DST%20Rev%20E.pdf Please contact us back for any further questions. Best Regards, Nicole
Answered by: Delta7
Date published: 2024-03-28

How do I tighten the ball onto the faucet? It is loose and I forget how to do it.

Asked by: GiantsMom
Hello Valued Customer, Thank you for contacting Delta Faucet Company! The knob handle on our 521-ECO-DST-A can be tightened with a philips screw driver. The button on the tip will need to be removed first, then you can tighten the screw to the ball assembly. We appreciate your inquiry. Please reach out directly if you have further questions! Best Regards, Kyra Digital Communications Specialist
Answered by: Delta
Date published: 2025-06-02
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PART LIST

PART LIST

1 2 >
Image-Master-RP52833

Classic

Classic Metal Lever Handle Kit - 1H Bathroom

List Price: $40.10 - $54.05
Free Ground Shipping All Orders $49+

RP52833

Image-Master-RP51502

Delta®

Delta® Bonnet Cap

List Price: $18.05 - $49.70
Free Ground Shipping All Orders $49+

RP51502

Image-Master-RP17446

Delta®

Delta® Button - 1H Bathroom, Tub & Shower

List Price: $13.75
Online Price: $11.00
Free Ground Shipping All Orders $49+

RP17446

Image-RP62933

Classic

Classic Gasket

List Price: $19.40
Online Price: $15.52
Free Ground Shipping All Orders $49+

RP62933

Image-RP60730

Delta®

Delta® Aerator - Wrench - 0.5 GPM

List Price: $13.95
Online Price: $11.16
Free Ground Shipping All Orders $49+

RP60730

Image-Master-RP6146

Delta®

Delta® Lift Rod & Finial - Bathroom

List Price: $29.25 - $36.75
Free Ground Shipping All Orders $49+

RP6146

Image-RP73192

Classic

Classic Button - Red / Blue

List Price: $14.50
Online Price: $11.60
Free Ground Shipping All Orders $49+

RP73192

Image-RP53531

Delta®

Delta® Mounting Nuts - 15 / 16 Series

List Price: $27.15
Online Price: $21.72
Free Ground Shipping All Orders $49+

RP53531

Image-Master-RP60983

Classic

Classic Aerator - Water-Efficient - 1.5 GPM

List Price: $27.35
Online Price: $21.88
Free Ground Shipping All Orders $49+

RP60983

Image-RP52221

Delta®

Delta® Adapter & Screw

List Price: $25.95
Online Price: $20.76
Free Ground Shipping All Orders $49+

RP52221

Image-Master-RP60729

Delta®

Delta® Aerator - Water-Efficient - 0.5 GPM

List Price: $35.05
Online Price: $28.04
Free Ground Shipping All Orders $49+

RP60729

Image-RP152

Delta®

Delta® Set Screw

List Price: $10.45
Online Price: $8.36
Free Ground Shipping All Orders $49+

RP152

4.20 5
Image-RP71111

Delta®

Delta® Aerator - Water-Efficient & Wrench - 0.5 GPM

List Price: $53.60
Online Price: $42.88
Free Ground Shipping All Orders $49+

RP71111

Image-RP51503

Delta®

Delta® Bonnet Nut w/ Valve Seal

List Price: $35.10
Online Price: $28.08
Free Ground Shipping All Orders $49+

RP51503

5.00 3
Image-Master-RP52220

Delta®

Delta® Clear Knob Handle Kit

List Price: $37.65
Online Price: $30.12
Free Ground Shipping All Orders $49+

RP52220

Image-RP54899

Delta®

Delta® Spacers (4)

List Price: $14.00
Online Price: $11.20
Free Ground Shipping All Orders $49+

RP54899

* Actual pricing may vary and is determined by the selling retailer/wholesaler/dealer.