Watts PWROKCZRO User Manual

Installation, Operation
and Maintenance Manual

Kwik-Change™ Zero Waste Reverse Osmosis
Model PWROKCZRO

PURE WATER

Important

Please read the entire manual before proceeding with the
installation and startup Your failure to follow any attached
instructions or operating parameters may lead to the product’s
failure.

Save manual for future reference.

IOM-WQ-PWROKCZRO

PWROKCZRO

Table of Contents

Operational Parameters...................................3

Contents of Reverse Osmosis System........................3

Tools Recommended For Installation .........................3

Drill a Hole for the Faucet in a Porcelain Sink ................... 3

How To Use Quick-Connect Fittings For Tubing Connections ......4

Punch a Hole for the Faucet in a Stainless Steel Sink.............3

Faucet Installation .......................................5

Installation of Hot and Cold water supply valves ................5

Reverse Osmosis Module Mounting .........................5

Connect the Tubing to the Hot and Cold Water Valves............5

Tank Ball Valve Installation .................................6

Check Air Pressure in the Tank .............................6

Blue Tube Connection (From RO Module To The Tank) ...........6

Blue Tube Connection (From RO Module to the Faucet)...........6

Start up Instructions .....................................6

6-Month System Maintenance.............................. 7

Annual System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Membrane Replacement .................................8

Parts List / Unit Drawing ..................................9

Troubleshooting .......................................10

Arsenic Fact Sheet .....................................11

Limited Warranty .......................................12

Note: Do not use with water that is microbiologically unsafe or

of unknown quality without adequate disinfection before or after
the system.

Introduction

Thank you for your purchase of a state of the art Watts Kwik­Change™ Zero Waste Reverse Osmosis (RO) water treatment
system. Water quality concerns are becoming more of a focus for

the public. You may have heard about contaminants in the drinking
water, such as Arsenic, Perchlorate, Chromium, Cryptosporidium
or Giardia. There may also be some local water issues such as high
levels of Lead and Copper. This Watts water treatment system has
been designed and tested to provide you with high-quality drink­ing water for years to come. The following is a brief overview of the
system.

Your Reverse Osmosis System:

Osmosis is the process of water passing through a semi-permeable
membrane in order to balance the concentration of contaminants
on each side of the membrane. A semi-permeable membrane is a
barrier that will pass some particles like clean drinking water, but not
other particles like arsenic and lead.

Reverse osmosis uses a semi-permeable membrane; however, by
applying pressure across the membrane, it concentrates contami­nants (like a strainer) on one side of the membrane, producing crystal
clear water on the other. This is why RO systems produce both clean
drinking water and rinse water that is flushed from the system. This
reverse osmosis system also utilizes carbon block filtration technol­ogy, and can therefore provide a higher quality drinking water than
carbon filtration systems alone.

Your system is a three stage RO which is based upon separate
treatment segments within the one complete water filtration system.
These stages are as follows:

Stage 1 – Carbon filter, recommended change 6 months.

The first stage contains a 5-micron carbon block filter. This
helps ensure that chlorine and other materials that cause
bad taste and odor are greatly reduced.

Stage 2 – Membrane, recommended change 2 to 5 years.

Stage-2 is the heart of the reverse osmosis system, the
RO membrane. This semi-permeable membrane will
effectively take out TDS, Sodium and a wide range of
contaminants such as Percholate, Chromium, Arsenic,
Copper, Lead as well as Cysts, such as Giardia and
Cryptosporidium. Because the process of extracting this
high-quality drinking water takes time, your RO water
treatment system is equipped with a storage tank.

Stage 3 - Carbon post filter, recommend change 12 months.

The final stage is a high-quality carbon filter. Drinking water
enters this filter after the water storage tank, and it is used
as a final polishing filter.

Note: Filter life may vary based upon local water conditions or
use patterns.

System Maintenance

Just because you cannot taste it, does not mean that it is not there.
Contaminants such as Lead, Chromium and Arsenic are undetect­able to the taste. Additionally, over time if you do not replace the
filter elements, other bad tastes and odors will be apparent in your
drinking water.

This is why it is important to change out your filters at the recom­mended intervals as indicated in this system manual. When replacing
the filter elements, pay special attention to any cleaning instructions.
Should you have any further questions please refer to our website
at www.watts.com or call our customer service department at

1-800-244-1299.

2

Operational Parameters

STEP 1

Do not use with water that is microbiologically unsafe
or of unknown quality without adequate disinfection

!

before or after the system. System is intended to be
installed on the cold water line only.

Operating Temperatures Maximum 100°F (37.8°C) Minimum 40°F (4.4°C)

Operating Pressure

pH Parameters Maximum 11 Minimum 2
Iron Maximum 0.2 ppm
TDS (Total Dissolved Solids) < 1800 ppm
Turbidity < 5NTU

Hardness: Recommended hardness not to exceed 10 grains per
gallon, or 170ppm. System will operate with hardness over 10 grains
but the membrane life may be shortened. Addition of a water soft­ener may lengthen the membrane life.

Water Pressure: The operating water pressure in your home should
be tested over a 24 hour period to attain the maximum pressure.
If the incoming water pressure is above 85psi a pressure regulator
is recommended, and if over 100psi then a pressure regulator is
required.

Copper Tubing: Reverse Osmosis water should not be run through
copper tubing as the purity of the water will leach copper causing

an objectional taste in water and pin holes may form in the tubing.

Watts supplies speciality filters that can be used if copper tubing
follows the Reverse Osmosis unit. Be sure to follow any state or local
regulations during installation.

Note: RO unit must be installed a minimum of 25 Pipe feet from
water heater.

Maximum 85psi

(6.0 kg/cm2)

Minimum 40psi

(2.80 kg/cm2)

***IMPORTANT NOTICE***

System was tested in a laboratory setting utilizing a hot water
heater of 40 gallons set at 120°F. Performance may vary if
your heater is smaller than 40 gallons or set above 120°F,
contact the manufacturer for additional details.

System should not be used on homes equipped with a back­flow prevention on the hot water heater. This device is 100%
efficient, as no water is lost to drain in the production of the
RO water.

Drill a Hole for the Faucet in a Porcelain Sink

Note: Most sinks are predrilled with 1½" or 1¼" diameter hole
that you can use for your RO faucet. (If you are already using it
for a sprayer or soap dispenser, see Step 2).

Caution: Porcelain sinks are extremely hard and can crack or
chip easily.

Use extreme caution when drilling. Watts accepts no responsi­bility for damage resulting from the installation of faucet.

Step A – Determine desired location for

Step B – Using a variable speed drill

Step C – Using a 1¼" hole saw, pro-

Step D – Make sure the surroundings

the RO faucet on your sink
and place a piece of masking
tape on over where the hole is
to be drilled. Mark the center
of the hole on the tape.

set on the slowest speed, drill

1

⁄8“ pilot hole through both

a
porcelain and metal casing
of sink at the marked center
of the desired location. Use
lubricating oil or liquid soap
to keep the drill bit cool (If drill
bit gets hot it may cause the
porcelain to crack or chip).

ceed to drill the large hole.
Keep drill speed on the slow­est speed and use lubricating
oil or liquid soap to keep the
hole saw cool during cutting.

of the sink are cooled before
mounting the faucet to the
sink after drilling and remove
all sharp edges.

Contents of Reverse Osmosis (RO) System

1 Tank

1 RO Module

1 Parts Bag

1 Faucet Bag

1 Manual

If any of the items are missing please contact prior to installing.

Tools Recommended for Installation

• 1¼" Hole Saw Bit for Faucet opening

• Round Knockout Punch for Stainless
Sinks 1¼"

• Adjustable Wrench

• Sharp Knife

1

⁄2" & 5⁄8" Open End Wrenches

•

• Phillips Screw Driver

• Needle Nose Pliers – Adjustable Pliers

• Electric Drill

1

⁄8" Drill Bit

•

1

⁄4" Drill Bit

•

3

⁄8" Drill Bit

•

OR

Punch a Hole for the Faucet in a Stainless
Steel Sink

Note: If mounting faucet to a Stainless
Steel Sink you will need a 1¼" Hole
Punch. The faucet opening should be
centered between the back splash
and the edge of the sink, ideally on the
same side as the vertical drain pipe.

1

Step A – Drill a ¼" pilot hole. Use a

Hole Punch and an adjustable

wrench to punch the hole in the

sink. Change to the 1¼" Hole

Punch to enlarge the hole

The faucet can now be installed.

3

⁄2"

How To Use the Quick-Connect Fittings For Tubing Connections

To make a connection, the tube is simply pushed into the fitting.
Place a piece of tape

1

⁄2" from end of tube to indicate how far the
tube should be inserted. The unique patented locking system holds
the tube firmly in place without deforming it or restricting flow.

NOTE: These diagrams are just to show how the quick-connect
fittings work, your product may not have this exact connector
part.

It is essential that the outside diameter be free of score marks and that burrs and
sharp edges be removed before inserting into fitting.

Push the tube into the fitting, to the tube stop. The collet (gripper) has stainless
steel teeth which hold the tube firmly in position while the O-ring provides a perma­nent leak proof seal.

To disconnect, ensure the system is depressurized before removing the tube. Push
in collect squarely against face of fitting. With the collet held in this position, the
tube can be removed. The fitting can then be reused.

Fitting grips before it seals. Ensure tube is pushed into the tube stop.

Pull on the tube to check that it is secure. It is a good practice to test the system
prior to leaving site and /or before use.

4

STEP 2

STEP 3

Watts Chrome Top Mount
Faucet Installation

MiniMuM MaxiMuM

Mounting Hole Size 1" 11⁄4"
Torque on Toggle Bolt 5 lb.in. (max)

Gather and identify the faucet pieces.

Step A - Remove faucet base & faucet spout from their respective

plastic bags. From above the sink, feed the faucet tubing

& toggle bolt down through the 1¼" mounting hole in
the sink. Ensure that the soft rubber gasket is uniformly

positioned in between the base of the faucet and the top of
the sink.

Step B - Align the faucet base so that the handle is on the right side

and the base is sitting flush on the sink top. Turn the handle

down (towards you) to the “ON” position to reveal the

tightening screw (located where the spout will be inserted).
Using a phillips head screwdriver, turn the screw clockwise
until the toggle bolt secures the faucet base snug onto the
sink top.

Step C - Once the faucet base is securely fastened to the sink top,

insert the faucet spout into the faucet base until it is fully

seated. Turn the handle up (away from you) to the “OFF”

position.

Adapt-A-Valve™ Installation

Verify contents prior to installation:

( 1 ) - Plastic Adapt-a-Valve™ & Black Collet
( 1 ) - Brass Adapter no washer
( 1 ) - Brass Adapter with black washer
( 1 ) - White rubber washer

Water supply line to the system must be from the cold water
supply line only. Hot water will severely damage your system.

WARNING: Do not use Teflon tape with the Adapt-A-Valve™.

For 3⁄8" Configuration

(With Brass Fittings)

* Insert White Washer

1

For

⁄2" Configuration

Hot

Supply

Cold

Supply

(Without Brass Fittings)

1

⁄2" Conguration

Step A - Turn off the cold water supply to the faucet by turning the

Step B - Open cold water sink faucet to relieve pressure.

Step C - Choosing the configuration that fits your plumbing, at-

angle stop valve completely off.

tach the Adapt-A-Valve™ as illustrated in the four photos
above.

Hot

Supply

Cold

Supply

STEP 4

Reverse Osmosis Module Mounting

Step A – Determine best location for the

Note: Do not cut any RO system tubes at this time

RO module to be mounted to
allow for future system main­tenance. The parts bag has 2
self tapping screws. Using an
electric drill with a Phillips bit,
screw them into the cabinet

wall 6" apart and 16" from the

bottom of the cabinet.

5

STEP 5

STEP 8

Tank Ball Valve Installation

Step A – Teflon tape must be applied

in a clockwise direction. Wrap
(4 to 8 turns) around the male
pipe threads (MPT) on the
stainless steel fitting on top of
the tank.

Step B – Thread the Quick-Connect

ball valve (supplied in the
parts bag) onto the stainless
steel connector on the tank.

Caution: Do not Teflon tape the plastic
elbow threads as this may cause leaks.

STEP 6

Blue Tube Connection
(From The RO Module To TANK)

Step A – Position tank in desired loca-

tion. Stand it upright or lay it
on its side (using the black
plastic stand). Measure the

blue tube (marked “TANK”)

from the RO module over to
the tank and cut it to length
leaving a straight edge on
the end of the tube. Then insert the tube into the quick­connect fitting on the tank ball valve. Make sure the tube
is pushed in all the way to the tube stop (see Page 4 for
quick-connect fitting use directions).

STEP 7

Check Air Pressure in the Tank

Note: Check air pressure when tank is empty of water!

Check air pressure in the storage tank when you notice a de­crease in available water from the RO system. Air can be added
with a bicycle pump using the schrader valve that is located on
the lower side of the tank behind the blue plastic cap.

Step A – Turn off the incoming water

supply to the RO by turning the
knob on the Adapt-A-Valve™
clockwise until it stops. (Follow
the green tube away from the
RO system to find the Adapt-A­Valve™.)

Step B – Open the RO Faucet and allow water to drain from the tank

until it is completely empty.

Tip: When water from the RO faucet slows to a trickle, with the
faucet still in the open position, you may add air to the tank to
purge any left over water, this will ensure that the tank is com­pletely empty.

Step C – Once all water in the tank is purged, check air pressure us-

ing an air pressure gauge, it should read between 5 - 7psi.
(Digital air pressure gauge is recommended)

Step D – Follow startup procedure on Page 6.

Blue Tube Connection
(From The RO Module To FAUCET)

Step A – In the parts bag locate

Step B – Insert the

3

⁄8" stem X 1⁄4" quick-

the
connect fitting adapter.
Insert the stem adapter
into the
connect fitting that is on
the end of the top mount
faucet toggle bolt.

3

⁄8" open quick-

1

(marked “FAUCET”) from

the RO Module into the

1

⁄4" quick-connect end of
the
connect fitting adapter
that was previously
installed above in the top
mount faucet. Make sure
the tube is pushed in all
the way to the tube stop.

⁄4" blue tube

3

⁄8" stem X 1⁄4" quick-

Start Up Instructions

Warning: To prevent the possibility of electrical shock, clean up
any water on cabinet floor and dry all water from outside of RO
unit.

Step A– Turn on the incoming cold and hot water at the angle

Note: If you have connected your RO system to a refrigerator /
ice maker, make sure the ice maker is off (do not allow water to
flow to the ice maker) until flushing is complete and the tank has
been allowed to fill completely. Connection from the RO to the
ice maker system should have an in-line valve installed before
the ice maker so it can easily be closed to prevent water flowing
to the ice maker during start up and periodic maintenance. Your
RO tank must be allowed to fill up fully in order for the ice maker
system to work properly.

Step B – Plug the 24 volt transformer power cord connector into the

Step C – Plug the transformer into the electrical outlet under the sink.

Step D – Open the RO faucet and leave it open until water begins to

Step E – After water trickles out of the faucet, close the RO faucet

Note: Ensure Ball Valve on the RO storage tank is open.

Note: During the fill period you may hear water trickling due to
the Reverse Osmosis Process.

Step F – After the Tank has filled, open the RO Faucet to flush the

Note: Flushing of the tank 3 times is only necessary during the
initial startup and after replacing the membrane.

Important: Your reverse osmosis system contains replaceable
treatment components that are critical for effective contain­ment reduction. Periodic inspection and following proper
system maintenance is critical for continued performance.

6

stop valves by turning the knob on the Adapt-A-Valve™
counterclockwise. Check the system for leaks and tighten
any fittings as necessary. (Check frequently over the next 24
hours to ensure no leaks are present).

RO wire harness connector (labeled Transformer).

trickle out (it will come out slowly).

allowing the storage tank to fill with water. It may take 4 to
6 hours to fill the tank completely depending on the pro­duction capability of the membrane, local water tempera­ture and water pressure.

tank completely to remove carbon particles from final filter.
You will know that the tank is empty when the flow rate
from the RO faucet is down to a trickle. Repeat this step
two more times. The fourth tank can be used for drinking.

6-Month System Maintenance

Order filter by calling Watts at 1-800-224-1299

Item Needed: EDP# 7100109
Includes:

• (1) Carbon Block Filter

This reverse osmosis system contains a replaceable compo­nent (the RO membrane) which is critical to the efficiency of the
system. Replacement of this reverse osmosis membrane should
be with one of identical specifications as defined by Watts to
assure the same efficiency and contaminant reduction perfor­mance.

Note: Your RO module is equipped with valved heads which will
automatically turn off the water supply to each filter when the
filter is released, thus you do not need to turn off the incoming
water supply at the Adapt-A-Valve™. The faucet must be off
when filter is replaced.

Step A – Place the towel under the RO module to catch any excess

Step B – To make the removal of the

water that drips out from the filters during the changeover.

filter housings easier, the heads

& housings may be lifted up

to 90 degrees as shown in the
pictures to the right. Starting
with cartridge closest to the
pump. Change only the carbon
block filter, lift the cartridge
up to 90 degrees. Rotate the cartridge a
clockwise, remove and dispose of used cartridge.

1

⁄4 turn counter-

Step C – Make sure to remove the

Step D – When finished flush your tank

Photographs for reference purposes
only for Kwik-Change™ drinking water
systems. Your system may contain 2, 3,
or 4 filter cartridges.

cap off of the new replace­ment filter. Insert the new filter
cartridge into the head and
rotate it clockwise
it stops. Return cartridge to the
vertical position.

completely once to remove
any natural carbon fines from
the RO system. Check over
the next 24 hours to ensure no
leaks are present.

1

⁄4 turn until

Annual Maintenance

Order filter by calling Watts at 1-800-224-1299

Item Needed: # 7100119
Includes:

• (1) Carbon Block Filters • (1) Membrane

• (1) Post GAC

Note: Your RO module is equipped with valved heads which will
automatically turn off the water supply to each filter when the
filter is released, thus you do not need to turn off the incoming
water supply at the Adapt-A-Valve™. The faucet must be off
when filters are replaced.

Step A – Place the towel under the RO module to catch any excess

Step B – Start with Carbon Block Filter

water that drips out from the filters during the changeover.

(closest to pump). Lift the
cartridge to make the removal
of the filter housings easier, the

heads & housings may be lifted

up to 90 degrees as shown
in the pictures to the right.
Starting with the sediment filter,
lift the cartridge up to 90 degrees. Rotate the cartridge

1

⁄4 turn counterclockwise, remove and dispose of used

a
cartridge.

Step C – Make sure to remove the

Step D – Repeat this procedure for the

Photographs for reference purposes
only for Kwik-Change™ drinking water
systems. Your system may contain 2, 3,
or 4 filter cartridges.

cap off of the new replace­ment filter. Insert the new filter
cartridge into the head and
rotate it clockwise
it stops. Return cartridge to the
vertical position.

2nd and 3rd filter cartridges.
When finished flush your tank
completely once to remove
any natural carbon fines from
the RO system. Check over
the next 24 hours to ensure no
leaks are present.

1

⁄4 turn until

7

Membrane Replacement

This reverse osmosis system contains a replaceable component (the
RO membrane) which is critical to the efficiency of the system.

Replacement of this reverse osmosis membrane should be with one
of identical specifications as defined by Watts to assure the same
efficiency and contaminant reduction performance.

Membranes have a life expectancy between 2 and 5 years, de­pending on the incoming water conditions and the amount the
RO system is used. This reverse osmosis membrane is critical for
effective reduction of total dissolved solids (TDS). The product water
should be tested periodically to verify that the system is performing
satisfactorily.

Normally, a membrane would be replaced during a semiannual or

annual filter change. However, if at any time you notice a reduction
in water production or an unpleasant taste in the reverse osmosis
water, it could be time to replace the membrane. Watts recommends
replacing the membrane when TDS reduction falls below 75%.

Note: A water sample may be sent to Watts for a free diagno­sis of your membrane performance. To send a water sample,
use two (2) clean containers and fill ½ cup of tap water in one
container and ½ cup of reverse osmosis water in 2nd container.
Clearly label each sample. Send the samples to the address
listed on the cover of this manual attention “Water Samples”.
Watts will test the water and mail or call you with the results.

See annual maintenance on Page 7.

Step A – To change your membrane follow the instructions for the

Annual Maintenance (previous section). The procedure to
remove and change the membrane cartridge is the same
as all the other filter cartridges on the RO module.

Step B – Check over the next 24 hours to ensure no leaks

are present.

Replacement Filter Packs

Model Frequency description

PWKCCB13 6 months Carbon Block
PWFPKKCZW Annual Membrane and filters
PWKCGAC13 Annual GAC filter
PWMEMKC60 2-5 years 60 GPD membrane

8

Parts List

The reverse osmosis system contains a replaceable treatment com­ponent, critical for the effective reduction of total dissolved solids and
that the product water shall be tested periodically to verify that the
system is performing properly

iteM # edp # description

1 7300052 MODULE

2 7300034 ELBOW - 1/4" QC X 1/4" STEM (NOT SHOWN)

3 7300025 FLOW RESTRICTOR (NOT SHOWN)

4 7300000 TRANSFORMER

5 7100174 STORAGE TANK - 3 GAL WHITE

6 7300068 ADAPT-A-VALVE™

7 7100203 TOP MOUNT FAUCET - CHROME

8 7300073 TANK SHUT-OFF VALVE

9 7300028 ADAPTER - 3/8" STEM X 1/4" QC (NOT SHOWN)

10 7300001 BOOSTER PUMP - 1/4" QC
11 7300015 PRESSURE SWITCH
12 7300066 1/4" GREEN TUBING
13 7300064 1/4" BLACK TUBING
14 7300065 1/4" BLUE TUBING
15 7100109 CARBON FILTER
16 7100125 REVERSE OSMOSIS MEMBRANE
17 7100462 POST CARBON FILTER
18 7300076 SOLENOID VALVE
19 7300075 DOUBLE-CHECK VALVE

8

STORAGE TANK

5

FAUCET

7

TANK SHUT-OFF VALVE

14

14

1/4” BLUE TUBE

11

1/4 BLUE TUBE

TO

KITCHEN

SINK

HOT-WATER

SHUT-OFF VALVE

PRESSURE
SWITCH

ADAPT-A-VALVE

6

CHECK

19

VALVE

TO

KITCHEN

SINK

COLD-WATER

SHUT-OFF VALVE

13

12

FEED WATER

ADAPT-A-VALVE

6

1/4” BLACK TUBE

1/4” GREEN

TUBE

4

10

TRANSFORMER

PUMP

18

SELENOID

1

15

MODULE

1716

9

Troubleshooting

probleM cause solution

1. Low/Slow Production Low Water Pressure Assure a minimum of 40psi incoming water pressure.

Crimps in tubing Check tubing and straighten or replace as necessary.

Clogged pre-filters Replace pre-filters.

Fouled membrane Replace membrane and flow restrictor.

2. Milky colored Water Air in system Air in the system is a normal occurrence with initial start up

3. Water constantly running, unit will not shut off Low water pressure See #1 Above

Crimp in supply tube Check tubing and straighten or repair as necessary.

4. Noise / Water from faucet vent hole or noise from in drain
line drain.

5. Small amount of water in storage tank System starting up Normally it takes 4-6 hours to fill tank. Note: low incoming

6. Water leaks from the filter membrane housing Not properly tightened Re-insert the filter / membrane housing.

7. Low water flow from faucet Check air pressure in tank Use a Digital Air Gauge for best results. The empty tank pres-

Crimp or restriction Check tubing and straighten or repair as necessary.

Drain tube clogged Caused from dishwasher or garbage disposal.

Low water pressure See #1 above.

To much air in tank Tank air pressure should be 5-7psi when empty of water.

Watts sells a booster pump if home water pressure is low.
Make sure water supply is turned on and Adapt-A-Valve™ is
all the way open.

of the RO system. This milky look will disappear during normal
use within 1-2 weeks. If condition reoccurs after filter change,
drain tank 1 to 2 times.

Straighten all drain lines. Clear blockage. Cut off any Excess
tubing

Disconnect the 3/8" black line at the drain, clean the 3/8"
black line out with a wire, then reconnect. Blowing air through
the line will not always remove the clog.

water pressure and/or temperature can drastically reduce
production rate.

If below 5psi, add air or bleed if above 7psi.
Check only when tank is empty of water. See previous page.

sure should be 5-7 psi. To reset the air pressure in the tank,
turn off water supply and drain tank by opening faucet. When
water stops flowing out of the faucet. Remove schrader valve
cover pump air into tank until water stops flowing from the
faucet. Release the air out of the schrader valve until you
reach 5-7 psi. Replace schrader valve cover. Turn on Water.

10

Arsenic Facts

Arsenic (As) is a naturally occurring contaminant found in many
ground waters. Arsenic in water has no color, taste or odor. It must
be measured by an arsenic test kit or lab test.

Public water utilities must have their water tested for arsenic. You
can obtain the results from your water utility contained with in your
consumer confidence report. If you have your own well, you will need
to have the water evaluated. The local health department or the state
environmental health agency can provide a list of test kits or certified
labs.

There are two forms of arsenic: pentavalent arsenic (also called As
(V), As (+5)) and trivalent arsenic (also called As (III), As (+3)). In well
water, arsenic may be pentavalent, trivalent, or a combination of
both. Although both forms of arsenic are potentially hazardous to
your health, trivalent arsenic is considered more harmful than pen­tavalent arsenic.

RO systems are very effective at removing pentavalent arsenic. A free
chlorine residual will rapidly convert trivalent arsenic to pentavalent
arsenic. Other water treatment chemicals such as ozone and potas­sium permanganate will also change trivalent arsenic to pentavalent
arsenic. A combined chlorine residual (also called chloramine) where
it does convert trivalent arsenic to pentavalent arsenic, may not con­vert all the trivalent arsenic in to pentavalent arsenic. If you get your
water from a public water utility, contact the utility to find out if free
chlorine or combined chlorine is used in the water system.

This Watts reverse osmosis system is designed to remove up to 98%
of pentavalent arsenic. It will not convert trivalent arsenic to pen­tavalent arsenic. Under laboratory standard testing conditions, this
system reduced 0.30 mg/L (ppm) pentavalent arsenic to under 0.010
mg/L (ppm) (the USEPA standard for drinking water). Actual perfor­mance of the system may vary depending on specific water quality
conditions at the consumer’s installation. In addition to the indepen­dent laboratory standard testing conditions Watts has conducted
additional field testing on our reverse osmosis units to determine
trivalent arsenic reduction capabilities. Based upon Watts field test­ing, it has been determined that the RO units are capable of reducing
up to 67% of trivalent arsenic from the drinking water.

The RO membrane component of this Watts reverse osmosis system
must be maintained according to its recommended maintenance
cycle. Specific component identification and ordering information can
be found in the installation/operation manual maintenance section,
by phone at 1-800-224-1299 or online www.watts.com

11

liMited Warranty: Certain Watts Pure Water products come with a limited warranty from Watts Regulator Co. Other products may have no warranty or are covered by the original manufacturer’s
warranty only. For specic product warranty information, please visit www.watts.com or the published literature that comes with your product. Any remedies stated in such warranties are exclusive and
are the only remedies for breach of warranty. except For tHe applicable product Warranty, iF any, Watts MaKes no otHer Warranties, express or iMplied. to tHe Fullest extent

perMitted by applicable laW, Watts Hereby speciFically disclaiMs all otHer Warranties, express or iMplied, includinG but not liMited to tHe iMplied Warranties oF
MercHantability and Fitness For a particular purpose, and in no eVent sHall Watts be liable, in contract, tort, strict liability or under any otHer leGal tHeory, For
incidental, indirect, special or consequential daMaGes, includinG, WitHout liMitation, lost proFits or property daMaGe, reGardless oF WHetHer it Was inForMed about
tHe possibility oF sucH daMaGes.

A Watts Water Technologies Company

USA: Tel. [phone] • www.watts.com

Canada: Tel. [phone] • www.watts.ca

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