One of the best ways to get cleaner and safer drinking water straight from the tap is an under sink water filter. Tired of bottled water or wanting better water at home? Under sink filters will give you convenience, reliability and great results.

At Isopure Water we have a huge range of under sink water filters to suit you, including high quality filters like the PURA UV-1 and the PURA UVB range. This guide will show you how to install an under sink water filter with ease, with simple steps and maintenance tips.

Tools You’ll Need to Get Started

Before starting to install your under-sink water filtration system, take out the following tools and materials:
  • Adjustable wrench
  • Teflon tape
  • Screwdriver
  • Drill (if this is to be mounted)
  • Bucket and clean towel
  • Silicon-based O-ring lubricant

Step-by-Step Installation Guide

Step 1: Find The Ideal Location
Choose a location under the sink that is easy to access, making maintenance much easier. The space has to be big enough for the filtration unit and the connections up to the cold water line.


Step 2: Shut Off the Water Supply
Turn off the cold water supply valve under your sink. Open the faucet to release pressure from the lines.


Step 3: Prepare the Unit and Components
Unpack your system, such as the PURA UV-1 or PURA UVB2, and verify that all components, including filters and O-rings, are present. Check the manual for any specific requirements for your model.


Step 4: Install the Mounting Bracket
Use the included screws to attach the mounting bracket to the cabinet wall under your sink. Ensure the unit is upright and easily accessible.


Step 5: Connect the Inlet and Outlet Tubing
Attach the inlet tubing to the cold water supply line and the outlet tubing to the dedicated faucet or existing faucet line. Use Teflon tape to ensure secure, leak-proof connections.


Step 6: Install the Filters and UV Lamp (Optional)
If your system includes ultraviolet (UV) purification, such as the PURA UVB2 or UV1, carefully insert the quartz sleeve and UV lamp. Follow the manufacturer's guidelines to avoid damaging these fragile components.


Step 7: Flush the System
Turn on the water supply and let water flow through the system for several minutes. This step removes any carbon fines or debris from the filters.

*Pura UV Installation Manual


Maintenance Tips for Longevity

  • Replace Filters Regularly: Filters in systems like the PURA UVB2 and UV-1 typically last 4-6 months, depending on water quality. Replace them as needed to maintain optimal performance.
  • Clean the Quartz Sleeve: For UV systems, clean the quartz sleeve when replacing the UV lamp or filters. Use non-abrasive materials to avoid scratching the surface.
  • Disinfect Annually: At least once a year, disinfect the system to eliminate bacteria buildup and ensure the highest water quality.

Why Choose Isopure Water for Your Filtration Needs?

Isopure Water is your trusted source for advanced water filtration systems. From the PURA UVB series to the compact UV-1, we offer solutions designed to meet the demands of modern households. Explore our collection of under sink water filtration systems here and take the first step toward healthier water today.

Improve Your Water Quality Now

Don’t settle for anything less than pure, great-tasting water. An under sink water filtration system is an investment in your health and convenience. Start your journey to better water quality with Isopure Water today.