Special Nonexistent Furniture
SKU #: XWP1002

Watts Premier WP-4V Reverse Osmosis System


View all from Watts Premier



Rewards: Get 3% Back ?

Free Shipping
- Order in the next and have this item delivered free by ! More

Arrives for Christmas to Woodbridge, NJ 02108 (Change)


Product Details
Product Q&A
Shipping & Returns


  • VOC Carbon block filter
  • Easy to Install
  • Four stage manifold (complete with filters)
  • 3 Gallon storage tank
  • 1 - 5 Micron sediment: Reduces dirt, sand and rust
  • 1 - 5 Micron carbon block: Reduces chlorine, objectionable tastes and odor
  • 1 - 35 GPD Thin Film Composite Membrane Filter: High production thin film composite membrane separates unwanted impurities from your water
  • Operating temperatures: Maximum 100°F (37.8°C) and minimum 40°F (4.4°C)
  • Operating pressure: Maximum 100 psi (7.43 g/cm2) and Minimum 40 psi (2.80 kg/cm2)
  • pH Parameters: Maximum 11 and minimum 2
  • Iron: Maximum 0.2 ppm
  • TDS (Total Dissolved Solids) (1800 ppm)
  • Turbidity:< 5NTU
  • System NSF tested and certified against NSF/ANSI Standards 53 and 58 for the reduction of the claims specified on the performance data sheet
  • NSF certified
  • 1 - .5 Micron VOC Carbon Block Filter: Reduces harmful VOC
Show Additional Info


  • Overall Height - Top to Bottom: 16.5 Inches
  • Overall Width - Side to Side: 16 Inches
  • Overall Depth - Front to Back: 5 Inches
  • Overall Product Weight: 25.1 Pounds

Additional Documents

Manual sheet

Weights & Dimensions

  • Overall Height - Top to Bottom: 16.5 Inches
  • Overall Width - Side to Side: 16 Inches
  • Overall Depth - Front to Back: 5 Inches
  • Cartridge Filter Height: 10 Inches
  • Cartridge Filter Diameter: 2 Inches
  • Fitting Size: 0.375 Inches
  • Overall Product Weight: 25.1 Pounds


Product Type: Reverse-osmosisPrimary Material Details: Polypropylene
NSF Certified: YesWaterSense Compliant: No
Primary Material: PlasticADA Compliant: No
Filter Component: Filtration systemContaminant Removal: Sediment; Chlorine taste and odor; Lead; Cyst; Chemicals; Micro-Organisms; Asbestos; VOCs and MTBE
Filter Change Indicator: YesCommercial Use: No
Country of Manufacture: United States 
We're sorry, we have no FAQs to display. 

Still have questions about this product? We're here to help

When you buy a Watts Premier WP-4V Reverse Osmosis System online from Wayfair, we make it as easy as possible for you to find out when your product will be delivered. You can check on a delivery estimate for the Watts Premier Part #: 500109 here. If you have any questions about your purchase or any other Water Filtration product for sale our customer service representatives are available to help.Whether you just want to buy a Watts Premier WP-4V Reverse Osmosis System or shop for your entire home, Wayfair has a zillion things home.

Free Shipping

Ships to:     

Ships via:  FedEx/UPS (Learn More)

Delivery Estimates

Enter your shipping zip or postal code to calculate shipping estimates

Return Policy

We want you to love it. If you don't, you may return your purchase within 30 days of delivery. All you need to do is visit our Self-Service Return Center for instructions. Return credits are issued within 24 hours once the item is received and inspected. Please note that shipping charges are non-refundable. The cost of return shipping will be deducted from your refund.

30-Day Return Policy
See something odd? Report it here.

Customer Reviews

Tell Us What You Think!

Tell us what you think about this product. It will help us provide you with better products in the future and help your fellow Wayfair shopper make better purchases.

Average Overall Rating:
(based on 3 reviews)

Clear All
5 star
4 star
3 star
2 star
1 star
0 star

Best drinking water for a month

 from palm coast, FL– Verified Buyer

Easy to install if you have any skills, water was great for about a month then it started to smell bad. I have to run the water for 30 seconds or so to get good water again. I ordered new filters but they should last at least 6 months, maybe I just have really bad water, undrinkable before.

Was this helpful? Yes / No

Yummy water!

 from Davenport, FL– Verified Buyer

I love reverse osmosis water. The water quality in Central Florida isn't so great. But I love having the nice fresh water. The system is huge! and Takes up most of the cabinet space under the sink. The only thing was that we only have one drain. So we had to re-plum some of the pipes to make it work. Works great. Tastes great too!

Was this helpful? Yes / No

Great System

 from Clovis, NM– Verified Buyer

Installed in no time and does a great job on really bad water! Perfect solution for RVers who are not sure of water conditions. Suggest adding a UV light and additional after filter for not a lot more money. Then you are 99.9 % covered.

Was this helpful? Yes / No
2 out of 2 people found this review helpful

Related Products
The Premier Under Counter UV R Three stage ...
This kit includes two Five Micron Sediment filters, ...
Features: Material: plastic. 1 Filter cartridge included. 125 ...



This item is also sometimes listed under the following manufacturer numbers: 500109