Water Filter, Reverse Osmosis System, Reverse Osmosis Pressure Tank, Water Filtration Systems
Toll Free: 877-541-6603
Open 9 AM - 5 PM PST Mon-Fri
Quick Order

If you already know your part numbers, simply enter them below along with the quantity desired and click Add to Cart for a speedy check-out.

Enter Part Number:Qty.

Newsletter Signup

Join our newsletter list to get the latest updates


Contact Us

TOLL FREE: 877-541-6603


Home > Drinking Water Systems > Watts Reverse Osmosis Systems

Watts (W-525) 5 Stage Reverse Osmosis System 50 GPD

Watts (W-525) 5 Stage Reverse Osmosis System 50 GPD


Retail Price:: $358.14

Your Savings:: $99.14

On sale: $309.99$259.00 On Sale


Availability: Ships within 24-72 hours

Choose Options



A high quality system that is assembled in the USA and is NSF & WQA Certified! This guarantees the quality of your water. It comes with everything necessary for a standard installation including instructions, faucet and a set of filters.

Features & Benefits

  • Five stage treatment for superior performance.
  • 50 GPD membrane (Made in USA).
  • Designer chrome faucet with ceramic disc for greater durability.
  • Genuine John Guest® fittings throughout for optimum security.
  • 3/8” post filter and 3/8” tubing to faucet for greater flow.
  • Assembled in USA.
  • Certified by NSF International (Std. 58) for third party documentation.
  • Certified to NSF / ANSI Std. 58 for Pentavalent Arsenic reduction.
  • One year limited Warranty from date of purchase.

Specification Data

  • Membrane: 50 GPD
  • Maximum pressure: 100 psi
  • Minimum pressure: 40 psi
  • Maximum TDS: 2,000 PPM
  • Maximum hardness: 15 GPG
  • Maximum Iron: 0.3 PPM
  • Maximum HS: 0.0 PPM
  • Tubing (tank & faucet): 3/8"
  • Tubing (other): 1/4"


Excellent quality system
Shipping was fast,received everything as described.Installation DIY was smooth,problem free.System work fine. Use TDS meter to check water quality. City tap water reading 160ppm,RO tap water reading 008ppm.
Reviewed by: Zoran from Toronto Canada. on 1/14/2014
Excellent System
I was able to install it in my home myself. Important to note that this was my first plumbing work by myself on any house. Large tank had a slow leak, but I'm willing to be it was me. I bet if I unscrew it and apply some more tape it will go away.
Reviewed by: John from Madison, WI. on 8/21/2013
Excellent Product
I did a ton of research on NSF 58 certified water filters before choosing Watts. There is no doubt that this is an excellent product, on the easy side to install as far as filters go. In my previous house, I had a Culligan filter which produced a slightly higher pressure which I was accustomed to. I've had to get used to the slightly slower flow. But the quality of this filter I believe is better, so it's worth it.
Reviewed by: Leigh from Palm Desert, CA. on 5/27/2013
Highly Recommended!!!
Certification by NSF & WQA itself tells about the product.......The quality of the product is shown by the quality of our water after it gets purified.......I highly recommend it...............
Reviewed by: Philip John from Detroit, Michigan, US. on 3/8/2012
Impressed by High Performance of the system
I didnt see anywhere like this simple installation instructions which are associated in this product....I am totally impressed by the high performance of the system which can be done through the help of Five Stage treatment.....
Reviewed by: Amirthapradeep Ma.M. from Tamilnadu, India. on 3/7/2012


Questions & Answers

Q: What are the specification? Sizes? or where can I look that up? What are your Consumer Report ratings?
Asked by:  - 11/11/2013 (Submit an answer)
A: System size is 16" length x 6" depth x 16" height ; Tank size 11" diameter x 13" height. Consumer Reports do not do ratings for these types of products. Watts did not pay them to do so and probably never will for 99.9% of their products.
Was this answer helpful?  0 of 7 Customer(s) found this Answer helpful.
Answer provided by:  
Q: I have no pressure coming from faucet after a minute or so of getting a drink. I was told the tank needs 7psi of pressure. where do I fill the tank? Do I have to take whole system apart?
Asked by:  - 1/5/2014 (Submit an answer)
A: It is the round tank. Probably says PAE RO-132 on it. Remove the Blue cap at the bottom and use a bike pump to re-pressurize it but be sure the tank is empty.

There is a chance you need to replace it if it doesn't work.
Was this answer helpful?  0 of 1 Customer(s) found this Answer helpful.
Answer provided by:  
Q: they are telling me we casn only use a system that is NSF 60 or 61 approved Do you guys have such a thing?
Asked by:  - 1/23/2014 (Submit an answer)
A: I don't think there are ANY units on the market with that NSF 60 / 61 rating. I can't think of any company who wants to pay for it.
Was this answer helpful?  0 of 0 Customer(s) found this Answer helpful.
Answer provided by:  
Q: Does this unit come with an air gap faucet?
Asked by:  - 2/1/2014 (Submit an answer)
A: No. It does not. It comes with a non air gap faucet.
Was this answer helpful?  0 of 0 Customer(s) found this Answer helpful.
Answer provided by:  
Q: is there one hose going to the purified water spicket or more than one?
Asked by:  - 5/3/2014 (Submit an answer)
A: The faucet that comes with it is a non air gap. It only has one line going to the faucet.
Was this answer helpful?  0 of 0 Customer(s) found this Answer helpful.
Answer provided by:  
Browse Similar Items
Systems > Reverse Osmosis Systems