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Applicable Filter Models: H2O-F12, H2O-F13, 

H2O-F14, H2O-F15, H2O-F16, H2O-F17

Parts Included: One Replacement Filter 

Operating Specifications: Please refer to the information 

on the relevant filter box / filter label

Where Used: 

Model number 

/ Watts Part 

Number

Description

Used in System

Filter 

Change 

Time Frame

H2O-F12 / 

88005217

Carbon Block Filter

H2O-DWCB200

H2O-DWUF300

H2O-DWRO300

6 months

H2O-F13 / 

88005235

Lead/Volatile organic 

Compound Filter

H2O-DWGC100

H2O-DWGC101

H2O-DWCB200

H2O-DWUF300

6 months

H2O-F14 / 

88005215

Sediment Filter

H2O-DWCB200

H2O-DWUF300

H2O-DWRO300

6 months

H2O-F15 / 

88005447

Ultra-Filtration

H2O-DWUF300

12 months

H2O-F16 / 

88005218

Reverse Osmosis 

Membrane Filter

H2O-DWRO300

2-5 Years

H2O-F17 / 

88005219

Granular Activated 

Carbon Filter

H2O-DWGC100

H2O-DWGC101

12 Months

Component tested & certified by WQA for NSF/

ANSI 372 standard for ‘Lead Free’ compliance. 

Replacement Filter for Watts Pure 

H20 Series Under Counter Push 

Button Drinking Water Systems.

WARNING

!

Do not use with water that is microbiologically unsafe or of 

unknown quality without adequate disinfection before or after 

the system.

IMPORTANT

CAUTION

!

If you are unsure about installing your WATTS water filter, contact a 

WATTS representative or consult a professional plumber.

Other filters may look the same, but only use certified PureH2O 

manufactured replacement cartridges in systems in order to ensure 

proper reduction of water contaminants

Filter Replacement Instructions

Replacement instructions: 

Step 1:

 Place a towel under the filter 

module to catch any excess water 

that may drip out from the filters 

during the changeover.

Step 2:

 To remove a filter cartridge: 

Push and hold the button on the 

valve head above the filter. Twist 

filter counter-clockwise for about 

45 degree while pulling downward 

(from the head) Release button and 

discard old filter.

Step 3

: To install a filter cartridge: 

Remove the seal cap and insert the 

cartridge into the filter head, push 

upward and twist the filter clock-

wise for about 45 degree until you 

hear an audible “click” (the button 

does not need to be pressed to 

install new filters). 

Step 4:

 Turn faucet handle to the 

open position to start the flow 

of water through the unit. Run 3 

gallons of water through the unit in 

order to flush out the normal black 

carbon fines (it will “sputter” until 

the air is purged out) from the unit. 

A container with a known volume 

can be filled to determine how 

much water has flushed through 

the system. Initially, the water 

may appear cloudy which is due 

to tiny air bubbles and it will clear 

up shortly. Close the faucet when 

finished.

Step 5

: Check for leaks. If you have 

any leaks, shut off the water supply 

to your system, tighten any fittings / 

housings then turn the water supply 

back on. Check frequently over the 

next 24 hours to ensure no leaks are 

present. If you have any questions, 

please call our retail customer 

service at 

(888)321-0500

Tubing not shown in above pictures. Do not remove the tubing 

while changing the filter

NOTICE

Step 2

Step 3-1

Step 3-2

Step 3-3

COMPONENT

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