Draft for Mandatory Requirement  of Water Efficiency Labeling Products 
and Their Standard  Specifications  
 
Subject:  This is to preannounce  that toilets and washing machines are  products 
included the water  equipment, sanity ware or other equipment designated by 
the central authority -in-charge  that should have a Water Efficiency Labeling 
and the scheduled  implement ation date is  July 1, 2017.  
Basis: Paragraph 3, Article 95 -1 of the Water Supply Act
  
Announcement:  
1. The product type and scope : 
(1) Water closet : 
(a) Single flushing water closet . 
(b) Dual flushing water closet . 
(2) Washing machine:  Including domestic washing machines and washing 
machines used in self -service laundries or public areas of buildings , but n ot 
including  double -drum washing machines with a washing drum 
independent of a dehydration drum.  
2. The aforementioned products sold for domestic should obtain a Water Effic iency 
Labeling  in accordance with the Regulations for the Management of the Water 
Efficiency Labeling . Violators shall be fined NT$ 40,000 to NT$ 200,000 
according to Article 98 -1 of the Water Supply Act , and ordered to improve within 
a limited period. Those who fail to improve within the time limit may be punished 
each time.  
  Annex I: product item and standard  specification of the Water Efficiency 
Labeling   
1. Washing machine  
The product includes impeller , agitator, and drum  types.  
According to the Japanese Industrial Standard  JIS C9606  standard test conditions 
and method, at the washing capacity, high water level, and standard washing 
stroke of the maximum load, the product’s  washing performance should be up to 
more than 1.00 ; rinsing performance for impeller -type and agitator -type should be 
up to 0.80 or more, in drum -type should be up to more than 0.60 ; water extraction  
performance should reach more than 45 %. 
According the water consumption amount to do the wash per kilogram of clothes , 
it is divided into a gold grade  and general  grade . 
(1) State  for series of products: only the color, upper cover or door cover shape, 
upper cover or door cover opening methods, and the appearance  / material, 
etc. are different; can use a common test repo rt. 
(2) For impeller -type and agitator -type products, the water consumption per 
wash sat the gold grade  should be 15.0 liters or less  per kilogram  of clothes , 
and at the general grade  should be 20.0 liters or less  per kilogram  of 
clothes . 
(3) For drum -type products, the water consumption  per wash at the gold grade  
should be 8.0 liters or less  per kilogram  of clothes , and the general grade  
should be 13.0 liters or less  per kilogram  of clothes .  
 
2. Single flushing Water Closet  
Products include the toilet seat, water tank, flush tank parts, and flush valve.  
(1) Series of products:  
(a) Only the color, toilet up cover modeling, or the water tank cover 
modeling are different; can use a common test report.  (b) The same product only has a difference in whether it has a nano coating 
or not, need to comply with the flushing performance  test, and other test 
items can use a common test report.  
(c) If the products only have different outfall distances from the wall, they 
can share the test ing report of drainage test, water leakage test, and gas 
leakage test.  
(2) Dual flushing water closet can be divided into gold grade and general grade  
by water consumptions which tested in the water consumption test.  
Flushing amount at the gold grade must be below 4.8 liters each time.  
Flushing amount at the general grade  shall be below 6.0 liters.  
(3) Dilution factor for residual urine testing of toilets shall be a hundred times 
or more.  
(4) It shall comply with the Chinese National Standards CNS 3221 
performance requirements on flushing, drainage, gas leakage and water 
leakage.  
It shall comply with the Chinese National Standards CNS 3220 -1 
connection tightness quality requirements.  
It shall comply with the drain line transport characterization test; th e 
average floating distance of each flush ball is up to 13.0 meters or more.  
(5) The flush tank parts valve  should be consistent with the drain valve seal and 
durability test, and should pass 100,000 times of testing.  The flushing valve  
should pass 200,000  times operates  test. Comply to Chinese National 
Standards CNS 8088, the flush tank parts and the flush valve should pass 
the water seal performance test after durability test.  
(6) After  the flush tank parts inlet device operates 100,000 times in accordanc e 
with Chinese National  Standards CNS  8088 durability performance test 
method  of the flush ball valve,  it is required to pass the sealing performance 
test and shall comply with the inlet valve anti -siphon test.  (7) If the toilet water tank fittings belong to an electronically controlled valve, 
comply with Chinese National Standards  CNS 12566  test on a combination 
of temperature and humidity and  the quality regulation on EMC  
(electromagnetic  compatibility)  shall be presented.  
3. Dual flushing water closet  
Refers to a flushing amount being divided into two or more stages, but does not 
contain a non -stage; the product include the toilet seat, water tanks, flush tank 
parts and flush valve.  
(1) Series of products:  
(a) Only the color, toilet up cover modeling or the water tank cover modeling 
are different; can use a common test report.  
(b) The same product only has a difference in whether it has a nano  coating 
or not, need to comply with the flushing performance test, and other test 
items can use a common test report.  
(c) If the products only have different outfall distances from the wall, they 
can share the testing report of drainage test, water leakag e test and gas 
leakage test.  
(2) Dual flushing water closet can be divided into gold grade and general grade  
by water consumptions which tested in the water consumption test.  
The flushing for defecation at the gold grade shall be below 4.8 liters and 
for u rination shall be below 3.0 liters.  
The flushing for defecation at the general grade  shall be below 6.0 liters and 
for urination shall be below 3.0 liters.  
(3) During defecation, the dilution factor  for a residual urine test shall be a 
hundred times or mor e. During urination, the dilution factor  for a residual 
urine test shall be more than 20 times.  
(4) It shall comply with the Chinese National Standards  CNS 3221  
performance relevant requirements on flushing, drainage, gas leakage and 
water leakage.  It shall comply with the Chinese National Standards CNS 3220 -1 
connection tightness quality requirements.  
It shall comply with the drain line transport characterization test; the 
average floating distance of each flush ball is up to 13.0 meters or more.  
(5) The flush tank parts valve  should be consistent with the drain valve seal and 
durability test, and should pass 50,000 times of testing for defecation and 
urination respectively. The  flushing valve  should pass 100,000 times 
operates tests.  Comply to Chinese National Standards CNS  8088,  the flush 
tank parts and the flush valve  should pass the water seal performance test 
after durability test.  
(6) After  the flush tank parts inlet device operates 100,000 times in accordance 
with the Chinese National  Standards CN S 8088 durability performance test 
method  of the flush ball valve,  it is required to pass the sealing performance 
test and comply with the inlet valve anti -siphon test.  
(7) If the toilet water tank fittings belong to an electronically controlled valve, 
comply with Chinese National Standards  CNS 12566  test on a combination 
of temperature and humidity and  the quality regulation on EMC  
(electromagnetic  compatibility)  shall be presented.  
 
  Appendix 1: Test methods  
1. The water consumption test 
(1) Test conditions  
(a) The water closet  must be kept in the factory state or assembled by the 
manufacturer at their own discretion.  
(b) When using the tank  for water closet , adjust the supply water to the stop 
state.  
(c) While using the flush valve (pressure flush  valve), there should be 
1.0kgf/cm2 dynamic pressure inflow conditions.  
(d) The temperature of the water used should be room temperature.  
(2) Test operation  
(a) When using the tank  for the water closet , the water level is in the 
automatic stop state of the supply water.  
(b) The water closet bowl  is filled with water.  
(c) Place the cylinder in the bottom of the sewage pipe  to receive the 
flushing water , and then flush and measure the flush  volume . 
(d) If the designated sample  is a dual flushing  or multiple flushing  water 
closet , the flush volume  for each stage shall be tested separately.  
2. The water closet  urine residue test  
(1) Test conditions  
(a) The temperature of the water used should be room temperature.  
(b) The supply water is in the stop state.  
(c) With the conductivity meter to measure the dilution factor , the 
conductivity meter must contain an automatic temperature correction 
function.  
(2) Test operation  
(a) Dispense  the concentration of 5.00%, 0.05% (diluted 100 times) and 
0.25% (diluted 20 times) saline with tap water, and measure the 
conductivity.  (b) The water seal is filled with concentration of 5.00% saline , press the 
defecation or urination flush button, and wait for flushing complete.  
(c) After the water closet bowl  is stable , fill the water closet bowl  by tap 
water, when  the saline  mix with tap water , measure the conductivity   
and compare  to the dilution factor . 
 
3. Drain line transport characterization test  
(1) Test conditions  
(a) Refer to the ASME A112.19.2 test standard of the American Society of 
Mechanical Engineers.  
(b) The test medium shall consist of 100 polypropylene balls with the 
following characteristics:  
(i) weight: 3.0 ± 0.2 g; and  
(ii) diameter: 19 ± 0.4 mm.  
(c) The assembly shall have an NPS -4 rigid pipe that  
(i) is at least 18 m (60 ft) long;  
(ii) runs from the water closet and provides a straight run with a 2 % 
slope.  
(d) The temperature of the water used should be room temperature.  
(2) Test operation  
(a) The water seal is filled with water.  
(b) Place 100 balls in the water closet bowl, press the defecation flush button , 
and let the water stop  naturally . 
(c) Confirm and record the number of balls in the water closet bowl and the 
number of balls in each 3 m (10 ft)  of pipe . Those discharged from pipe 
are calculated a s 18 m (60 ft) . Calculate the weighted carry distance .  
 
4. The drainage valve seal and durability test  
(1) Test conditions:  (a) A flush  valve should be  installed in the standard water tank . If not 
feasible, it will be tested in the original water tank.  
(b) The volume of water per flush is 6.0 liters. If the volume of the largest 
flush is less than 6.0 liters, that maximum volume will be used as the test 
volume . 
(c) The temperature of the water used should be room temperature.  
(2) Test operation  
(a) Check the flush  valve for leaks after installing it in the standard water 
tank.  
(b) The action of turning the flush valve on and off per time will be counted 
together as one operation. The single  flush will be operated 100,000 times. 
The dual flush for urination and defecation will be operated 50,000 times 
apiece . 
(c) Check the flush  valve for leaks or malfunctions after the operation has 
been  complete.  
 
5. The fill valve anti -siphon test  
(1) Test conditions:  
(a) Refer to the ASSE 1002 Anti -Siphon Test standard of the American 
Society of Hygiene Engineering . 
(b) The temperature of the water used should be room temperature.  
(2) Test operation  
(a) The fill valve and related parts should be installed in  the standard water 
tank and the water injection pipe should be  placed outside the overflow 
pipe.  
(b) Insert a wire with a diameter of 0.8mm into the fill valve hole to confirm 
that the fill valve  can be fully  opened.  
(c) Pour water into the water tank until the critical level, and add some dyes 
to dye it.  (d) Turn on the vacuum motor . When reaching  the 10, 15, 20, 25 inch 
mercury vacuum each time, keep it for a minute.  
(e) Observe whether there is any staining  in the transparent tube.  
 
6. The standard water tank  
The inner dimension of the length, width and height of standard water tank are 
400 mm × 175 mm × 300 mm.  
 
7. Flush  valve discharging  test 
(1) Test conditions:  
(a) The temperature of the water used shoul d be room temperature.  
(b) The flush  valve should be  installed in the standard water tank.  
(c) Pour water into the water tank until the effective water amount of 6.0 
liters, and mark on the standard water tank, open the flush  valve to the 
natural closure and scale in the existing water level.  
(2) Test operation  
(a) Pour 2.5 liters of  water into the water tank  and mark (L2), then add 3.0 
liters of water and mark (L1), finally add 0.5 liters of water  and mark 
(L0).  
(b) Push the button to flush, record the time from L1 to L2 and calculate the 
volume of  flush per minute.