1 
 Legal Inspection Requirements for Water filter s (purifier s) 
 
By the Bureau of Standards, Metrology and Inspection (BSMI), Ministry of Economic Affairs (MOEA)  
 
Introduction:  
The BSMI received reports that d ichloromethane  exceeding the limit va lue of “Drinking Water Quality Standards”  was 
found in the drinking water processed by energy water machine s, a kind of water filter,  posing risk to human  health . 
With a view to protecting consume rs from relevant hazards , the BSMI  adds water filter s (purifier s) to the mandatory 
inspection scope.  The inspection standards are “Technical specification for water quality testing of drinking water from 
water filters (purifiers) commodities”  for water quality,  CNS 60335 -1 for safety  and CNS 13783 -1 for EMC . The 
conformity assessment procedure will be Registration of Product Certification Scheme (Module II+I II) or 
Type -approved Batch Inspection.  
 
The testing item s required by  “Technical specification for water quality testing of drinking water from water filters 
(purifiers) commodities”  include 9 metal elements and 15 volatile organic compounds .  
Category  Items  
Metal elements  Arsenic, Lead, Selenium, Total chromium, Cadmium, Barium, Antimony, Nichel, 
Mercury.  
Volatile organic 
compounds  Trichloroethene; Carbon tetrachloride; 1, 1,1-Trichloroethane; 1,2 -Dichloroethane; Vinyl 
chloride; Benzene; 1,4 -Dichlorobenzene; 1,1 -Dichloroethene; Dichloromethane; 
1,2-Dichlorobenzene; Toluene; Xylene s; Cis -1,2-Dichloroethene; 
Trans -1,2-Dichloroethene and Tetrachloroethene.  
 
  
Date of implementation:  1 July 2024 
 
Scope of covered products:  
Description of Goods  Inspection Standards  C.C.C. Code (the first 
6 digits are the same as 
HS Code)( For 
reference)  Conformity 
Assessment 
Procedures  
Water Filter  (purifier ) 
(inspection scope : those 
using filter materials to 
continuous ly filter tap water 
for drink ing, exclusive of 
full house filtration. F or the 
product requires power 
connection : rated voltage not 
exceeding 250V AC)  1. Technical specification for water quality 
testing of drinking water from water 
filters (purifiers) commodities ; and  
2. For the product requires power 
connection: CNS 60335 -1(2014)  and 
CNS 13783 -1(2013) . 8421.21.10.00.8  
8421.21.90.00.1  RPC Scheme 
(Modules II+ III) 
or 
TABI Scheme  
 
Description of the two kinds of conformity assessment procedures  
 
1. Registration of Product Certification (RPC) Scheme: Modules II+I II 
Under the II+III combination of modules used in this scheme, domestic manufacturers or importers must have their 
products type -tested in advance (Module II) by the BSMI or BSMI -designated  testing laboratories before applying 
for registration of their products. Manufacturers or importers will also be required to ensu re by declaration 
(Module III, conformity -to-type declaration) that all products made at their manufacturing facilities or imported are 
in conformity with the prototypes submitted for type -test at Module II stage. The conformity -to-type declaration 
shall b e drawn up by the manufacturer or the authorized local representative, declaring that the mass -produced 
products comply with the prototype as in the type -test report.  
After being certified and registered by the BSMI, products will be allowed to use the Com modity Inspection Mark 
with the letter ‘R’ and the identification number given by the BSMI. Additionally, these products can clear customs 
directly without any further inspection if not being sampled by RPC border check procedures. The application fee 
and annual fee for RPC are both NT$5,000 (about US$170) for each certification, and a RPC certific ate is valid for 
3 years. If there are any serial products, an extra NT$3,000 (about US$102) of application fee will be charged for 
every application in each cert ification. The fees for type testing vary by products and depend on the fee policies of 
the testing laboratories.  
 2 
 2. Type -Approved Batch Inspection (TABI) Scheme  
Under this procedure, manufacturers or importers shall have their products type -tested by the BSMI or the 
BSMI -designated testing laboratories, and file an application for Type Approval to the BSMI or its branches.  
After manuf acturers or importers obtain a  Type Approval certificate, they are required to file an application for 
batch inspection to the BSMI each time before their products are released from the production premises or arrive at 
the port of entry. The BSMI will then review the application and th e related documents while additional samples 
may be required for further testing if it is deemed necessary.  
After the products have passed the inspection, they will be allowed to use the Commodity Inspection Mark with the 
letter ‘T’ and the identification  number given by the BSMI. The application fee for a Type Approval is NT$3,500, 
and a Type Approval certificate is valid for 3 years. The fees for type testing vary by products and depend on the 
fee policies of the testing laboratories.  
*Further informatio n on the two schemes ca n also be found on the BSMI web site: 
https://www.bsmi.gov.tw/wSite/lp?ctNode=9768&CtUnit=4132&BaseDSD=7&mp=2  
 
Locations to apply for Registration of Product Certification:  
The BSMI or its branches.  
 
Time required for Registration of Product Certification:  
14 work ing days. (This period does not include the time for corrective actions by the applicant due to deficiencies in 
the documents or samples. Extra 7 work ing days may be required if additional tests are required.)  
‘’ 
Related requirements: ’ 
1. National deviation:  For the product requires power connection , the supply cords shall at least comply w ith CNS 
15767 -1 “Plugs and socket -outlets for household and similar purposes − Part 1: General requirements .’’ Class 0 
structure does not be allowed.  
2. CNS 60335 -1, CNS 13783 -1 and item 1 of the related  requirements is not applicable to water filters (purifiers) 
powered only by primary batteries.  
3. Water filters (purifiers)  powered by AC to DC adaptor, of which the output voltage does not exceed  42V, and 
which is certified under RPC or TABI scheme in accordance with IEC 61558 -1, IEC 61558 -2-16 and related 
inspection standards on EMC , type-test report of  CNS 60335 -1 and CNS 13783 -1 is not required  when applying 
certificate.  
4. “To continuously filter  tap water’’ means the processing of tap water, as defined in Article 3 of “Drinking Water 
Management Act,” on a contin uous basis via the connection to the  pipes  or faucets . “Full house filtration’’ means 
a type of water filter that uses filter materials t o filter water for all water usage in the whole household, including 
washing, drinking and etc.  
5. Upon the date of announcement of this measure, applications can be made to the BSMI for RPC certification. 
When the BSMI completes the review pr ocedure and app roves the application, a certificate will be issued and 
valid for 3 years.  
6. The C.C.C. Codes listed in the table  are used for reference only. The commodities shall still comply with the 
requirements before entering into the market, even though their C.C.C. Codes are identified differently by the 
Customs Administration, Ministry of Finance or Bureau of Foreign Trade, Ministry of Economic Affairs.  
7. The inspection standards of the commodities listed in the table shall be the version published in this 
announcemen t. If any updated version is available, the BSMI shall publish the implementation date of the updated 
version in further announcements.  
8. Commodities with combined types or multifunction al products shall comply with the respective inspection 
standards and the conformity assessment procedures of RPC scheme.