Water quality caused Dr. Clark grave
concerns, as she found it affected her patients negatively.
Her primary concern was solvents in water such as chlorine,
benzene and motor oil. Such solvents are best filtered
with coconut carbon, which is why she helped to develop and
test these high quality filters.
Dr. Clark found that traditional carbon
filters caused a major problem because the very solvents the
filters took out always re-contaminate all subsequent water
that would run through the filter - in micro amounts. She
found the solution to this problem was a superior and more
thorough backwash. By backwashing the carbon with hot water
instead of cold water she was able to regenerate the carbon
to her satisfaction.
This is of course the same principle as to
why you get more impurities (especially solvents such as
oils) out of your clothes when washing them in hot water
rather than cold water.
Dr. Clark turned to SHRC because she knew
that she could rely on the company that was established by
her son, Geoff Clark all the way back in 1993.
See more about carbon filtration here
Automatic and Programmable
Dr. Clark Whole House Water Filter - Version
3 includes a Computerized Main Control Valve. When you
receive it the valve is set to 10 minutes backwash plus 6
minutes rinse cycle. This equals 16 minutes total x 4
gallons per minute (GPM) = 64 gallons.
You can reduce the 64 GPM water consumption to 40 GPM on the
Version 3 Filters by reducing the backwash time to 6 minutes
backwash and rinse time to 4 minutes (10 minutes x 4 GPM =
40 gallons per backwash.
Further on Version 3 Filter you can adjust the backwash to
always happen at the same time of the week. You have a
choice between every day to every 99 days.
Backwash Whole House Water Filter
Designed by Dr. Clark
In 2007, after 2 years of researching many filter
combinations and testing of countless of filter mediums Dr.
Clark finally found this filter and filter medium to meet
her requirements. Oskar, Kirk White and an engineer worked
under the direct instructions of Dr. Hulda Clark and came up
with a workable design that met Dr. Clark’s strict
requirements and gained her approval after 6 months of
frequent testing of the water. She found that the water from
this filter (after an initial hot back wash) was purer than
from any other filters on the market.
The basic idea that hot carbon is more
easily cleaned in hot water than cold is perhaps intuitive
for most people that do dishes and laundry. There may also
be a more scientific explanation because hot water has been
proven to expand the tiny little pores in the activated
carbon, hence making it easier for pollutants to be
dislodged from the trap.
Specially processed and pre-hot-washed
Activated Carbon from Coconut Shells is used as filter
medium. This filter is the brainchild of Dr. Hulda Clark
herself. It met Dr. Clark’s strict requirements and gained
her final approval after 6 months of frequent testing of the
water. Dr. Clark found that the water from this filter
(after an initial hot back wash) was purer than from any
other filters available.
Since the filter does not contain tightly
packed filter media, it back-washes effectively, washing out
impurities. Solid carbon filters cannot do this. Dr. Clark
found that all other filters trap impurities within the
filter and distribute microscopic amounts of those toxins
into the water during the life of the filter.
Design with Hot Water Cleaning
This is the first filter on the market that
takes advantage of the fact that carbon pores expand in hot
water allowing for a more effective backwash (regeneration).
Only loose carbon can be effectively
regenerated. During backwash the carbon media is lifted up
and tumbled around in hot water. This is not possible with
tightly packed filters. Loose carbon also prevents the
formation of “water ways” in the carbon. Water follows the
law of least resistance and with time it carves a water way
right through your filter. Those waterways are destroyed
The filter is fully automatic and performs a
Hot Water Backwash every 1 to 99 days (your choice). Dr.
Clark recommends every 5 days. Dr. Clark wanted the filter
automatic because she found from experience that (a) people
don't change filters on time (b) forget to initiate manual
Activated Carbon is known for being the most
effective filter medium for organic solvents, such as oils,
benzene, and chlorine. Those are the type of toxins Dr.
Clark is most concerned with.
The shear quantity of carbon (1 cu ft)
contributes to the filters effectiveness.
Main filter medium (1 qubic ft carbon) does
not need to be changed more often than once every 3 to 5
years. You can control how often the system backwashes in
order to save water.
We now have the filter “pre-installed” on a
board so that you don’t have to pay your plumber to become
confused about how to install it. We have also recently
simplified the electronic circuits, making for a
Does Not Create “Hungry Water”
The filter does not take out all your
minerals from the water and therefore does not attach to
your plumbing system as “hungry water does”.
The filter does not add any chemicals to
Many prominent researchers agree
with Dr. Clark that chlorine is a killer. It is even defined
by the US EPA as a pesticide! Dr. Robert Carlson, a
highly accomplished researcher from the University of
Minnesota who’s work is sponsored by the Federal
Environmental Protection Agency, sums it up by claiming,
“the chlorine problem is similar to that of air pollution”,
and adds that “chlorine is the greatest crippler and killer
of modern times!”
Quick Reference Guide
When you open the image, please maximize your browser
windows to see the instructions clearly.
Considerations Before You Purchase
must be installed vertically (does not work in horizontal
position) with inflow, outflow and drain in accordance with
manufacturer’s recommendations to meet applicable building
Installation typically costs $600. We don’t
recommend you install this by yourself.
Additional costs will apply if you want to
operate the system outside USA on another voltage because
you need special transformers. If you live in a 220V area
please make sure to request a 220V a/c adapter for the main
filter head. You still need a step up transformer in order
to power the a/c adapter for the 4 automatic valves.
NOTE: Like stated, this
size of the Whole House Filter fits a 2 bathroom house,
however should you run two showers, a dishwasher, and water
the lawn at the same time the filter will most likely not be
able to purify your water sufficiently. Purification is a
factor of how long the water has contact with the coconut
carbon. Water saving shower-heads, faucets and toilets are
good investments for that reason as well others.
NOTE: Before installing the
filter please be aware that Dr. Clark preferred
gas-powered water heaters over electric water
heaters. The filter will still work properly with an
electric heater because the main task of this filter is to
remove organic solvents such as chlorine from the water. Dr.
Clark was concerned that electric water heaters pollute the
water with metallic heavy metals that are emitted from the
heating elements inside the electric heaters. When those
heating elements heat up to hundreds of degrees they
inevitably pollute the water. Therefore Dr. Clark
recommended people to get gas powered water heaters
installed at the same time they install the whole house
water filter. See more information below.
NOTE: This system works on
both 1 inch and ¾ inch plumbing system. In order to help not
loose pressure because of this installation make sure to
plumb 1 inch pipes (PVC or CPVC) from "water main" to
NOTE: Should you want to
filter well water you are advised to
install an inline UV Water Bug Eradicator system (call
Customer Service for purchasing those). Connect it on the
Main Water Inn, after the Whole House
Attention: This filter is
not designed to work in tandem with any other water
purification equipment (except UV Water Bug Eradicator and
Fluoride Max Eradicator). It’s up to you to decide if you
disconnect other purification equipment.
NOTE: The main filter head,
tank and automatic valves are manufactured to work properly
on a residential building. However we have not gotten any
approval for this system as a whole, from any government
agency. Therefore this system may not be compliant to
building codes. Fore example your area regulations may state
that you can only solenoids made with copper and they may
state that you cannot use any check valves made from PVC.
Further some regulations may state that you cannot put hot
water into the carbon tank or that you cannot use cPVC
plumbing. For this reason, you may not pass building
inspections when you sell the house. We advice you to simply
uninstall the system and take it with you.
Whole House Water Filter Guarantee
You get 1 year manufacturer guarantee on all
components, including all valves. We also offer a 90 day
money back guarantee. Should you not be happy with the
system for any reason, please return it for a refund, minus
a 15% restocking fee. However, should any part of the system
be defective you are entitled to an exchange of the part in
question, after trouble shooting sessions. There is no
refund on shipping.
Limitations to guarantee
parts but not labor
We pressure test the entire system to be free of any
leaks prior to shipping. We do not pay service charges
in case the system is not working. We only guarantee the
parts themselves. Please ask your plumber for a service
guarantee. We are not liable to cover any plumbing bills
under any circumstances. Each board is tested for leaks
before it is sent out. We guarantee that the assembly
board is working properly and does not leak when it
leaves our facility. However if it does leak - it may
have gotten damaged during shipping - this has not
happened before but if it does happen we cannot pay for
a plumber to repair it however we are happy to send you
If you use the filter anywhere else than in USA all
warranty on electrical parts are voided if you plug them
directly into 220V. The filter system is configured for
110v. You can order from at no additional cost (at time
of ordering unit) a replacement a/c adapter specifically
made for the main filter head that works on 220v to
240v. The a/c adapter that works powers the 4 automatic
valves need a "step up transformer" which you can order
at additional cost from us.
Gas-Powered Water Heater?
All traditional water heaters are made in
the same way, with glass lining. This is industry standard.
However electric heaters have a very hot element in direct
contact with the water. This is what Dr. Hulda Clark did not
like, according to her theories the hot element leached
metals into the water.
Here is a link to a water heater spec sheet:
They don’t talk much about glass lining but
in 6th paragraph they mention GLASS COATING.
They are protecting it from rust but at the same time
protect the water from any contact with hot metal. Basically
they pour hot glass into the tank after its made and code it
One of the main companies producing hot
water heaters of this type are:
A. O. Smith Water Products Company
500 Tennessee Waltz Parkway
Ashland City , Tennessee, USA 37015
1-800-527-1953 dial for service info ext 4 ext 3
Q: Do I have to purchase a
gas powered water heater in order to make the Dr. Clark
Whole House Filter work?
A: No. If you have access
to gas to heat your water in a gas powered water heater then
that is preferred but not absolutely necessary. The reason
for this is that electric heaters work by heating the water
with elements that pollute the water slightly. How you heat
your water does not affect the performance of our water
filter, it just gives you the additional benefits of not
polluting your water with ions of heavy metals emitting from
your heating elements. Gas powered water heaters heat the
water "slower" and are lined with glass that protect the
water from contact with metal. Our filter focuses on taking
out organic solvents, such as chlorine, oil and benzine. It
takes out some minerals but not all.
Water filter tank (9” by 48”)
Control Valve with Micro-Switch
Transformer: 24V AC, 1.25A
Pre-washed coconut carbon in Whole House
Filter, 1 cubic foot (inside filter) and 10 lbs pure
Two Normally Open Automatic (Solenoid)
Two Normally Closed Automatic (Solenoid)
Two blue filter housings for backwash
and carbon debris filter
Tool for removing filter housings
Coconut carbon and cartridge for
Fiber filter for collecting carbon
Leads with color coding for easy
Tube for backwash outlet
Instructions with diagram
Two page Service Manual Card (inside
Main Filter Housing)
In accordance to PhD Hulda Clark Guidelines
The Whole House Water Filter filters every drop of water entering the
house, providing clean water to kitchen sinks, refrigerator, bathroom sinks,
showers, tubs, dishwasher, and washing machine... making it one of the most
affordable ways to get clean water to your entire house!
ultra compact, specially treated coconut shell carbon.
One cubic foot of specially processed and pre-hot-washed Activated Carbon
from Coconut Shells is used as filter medium.
to our tests, the Fluoride Max removes approximately 93% of fluoride.
It is unfortunate but true that much of our public water is deliberately
contaminated with fluoride, presumably to avoid tooth decay.
Fluoride enters your body through bathing and drinking. Therefore you need to
filter the entire water supply entering your house.
Typical municipal water, before filtration, contains 0.92 mg/L of fluoride.
After running through the Fluoride Max it contains only 0.07mg/L of fluoride.
This is a 92% reduction!
Fluoride Max is rated to be effective for 36,000 gallons. You can calculate
your family’s water consumption based on the average water consumption per
person being 80-100 gallons per day. The filter medium will need to be changed
every three and a half months in a 4 person family. For the longest use please
plumb the filter so it bypasses your sprinklers, garden hoses, and washing
machine. We will test your water for free, once you have purchased our filter in
order to make it easer for you to gauge when to replenish your filter medium.
Fluoride Max comes with a pre-filter (see blue filter on picture) that is
designed to trap sediment and dirt. This 20 inch (0.5m) long filter traps
anything larger than 5 microns and extends the life of your filter.
Fluoride Max utilizes high grade Bone Charcoal (Hydroxyapatite) media – a
high grade media which is considered to significantly outperform "activated
alumina" – the other main way to remove fluoride.
Fluoride Max is a substantial size filter. It comes in a large 4 foot (1.2m)
by 8 inches (20cm) diameter tank and contains 1ft3 (28317cm³) Hydroxyapatite
One cubic foot of replacement Bone Charcoal (Hydroxyapatite) media costs less
than $300. You should replace the media according to your calculations. Replace
the 20" Microfiber Filter (pre-filter) every 6 months with regular use.
Due to the size, actual shipping applies to this item. Ask for a
ship quote please.
don't see something here, call anyway. We may be able