G/TBT/N/MEX/424  
27 June 2018 
(18-4063) Page: 1/2 
Committee on Technical Barriers to Trade  Original:  Spanish  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6.  
 
1. Notifying Member : MEXICO  
If applicable, name of local government involved (Articles 3.2 and 7.2):   
2. Agency responsible : Secretaría de Economía  (Ministry of the Economy)  
Name and address (including telephone and fax numbers, email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above:  
Comité Consultivo Nacional de Normalización de la Secretaría de Economía  (National 
Advisory Committee on Standardization of the Ministry of the Economy), Av . Puente de 
Tecamachalco No. 6, Col . Lomas de Tecamachalco, Sección Fuentes, Naucalpan de Juárez, 
C.P. 53950, Estado de México ; Tel.: 57 29 91 00, Ext. 43274 and 43244, Fax : 55 20 97 15 
or Email: juan.rivera@economia.gob.mx  and sofia.pacheco@economia.gob.mx  
3. Notified under Article 2.9.2 [X], 2.10.1 [ ], 5.6.2 [ ], 5.7.1 [ ], other:  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading . ICS numbers may be provided in addition, where applicable) : Meters for 
cold potable water and hot water Tariff heading : 902820  
5. Title, number of pages and language(s) of the notified document : Proyecto de 
Norma Oficial Mexicana PROY -NOM-012-5-SCFI-2017, Instrumentos de medición -
Medidores para agua potable fría y caliente -Parte 5 : Requisitos de instalación (Draft 
Mexican Official Standard PROY -NOM-012-5-SCFI-2017, Measuring instruments - Meters 
for cold potable water and hot water - Part 5 : Installation requirements) (cancels Mexi can 
Official Standard NOM -012-SCFI-1994) (13 pages, in Spanish)  
6. Description of content : The notified draft Mexican Official Standard applies to water 
meters used to measure the volume of cold potable water and hot water flowing through a 
fully charged , closed conduit . These water meters incorporate devices which indicate the 
integrated volume.  
In addition to water meters that operate mechanically, the notified draft Mexican Official 
Standard also applies to electric and electronic water meters, and to mechanical water 
meters which include electronic devices, and which are used to measure the volume of cold 
potable water and hot water . It also applies to electronic auxiliary devices . Auxiliary 
devices are optional . However, it is possible that, in line w ith international and domestic 
regulations, some auxiliary devices may become mandatory according to the use of water 
meters.  
The specifications of the notified draft Mexican Official Standard apply to water meters, 
irrespective of technology, defined as f low totalizer meters that continuously determine the 
volume of water flowing through them.  
7. Objective and rationale, including the nature of urgent problems where 
applicable : The notified draft Mexican Official Standard establishes the criteria for the 
selection of basic, combination and concentric water meters, related accessories and G/TBT/N/MEX/424  
- 2 - 
  installation, and the special requirements for the first operation of new or repaired meters, 
in order to guarantee that such meters take constant measurements and reliable readings.  
8. Relevant documents:  
 NOM-008-SCFI-2002, Sistema general de unidades de medida (Mexican Official 
Standard NOM -008-SCFI-2002: General system of units of measurement),  
published in the Official Journal on 2 7 November 2 002; 
 ISO 4064 -1:2014 Water meters for cold potable water and hot water -Part 1 : 
Metrological and technical requirements;  
 ISO 4064 -4:2014 Water meters for cold potable water and hot water -Part 4 : Non-
metrolo gical requirements not covered in ISO 4064 -1; 
 ISO 6817:1992 Measurement of conductive liquid flow in closed conduits -Method 
using electromagnetic flowmeters.  
9. Proposed date of adoption : To be determined.  
Proposed date of entry into force : The notified M exican Official Standard will enter into 
force 60 calendar days after publication as a final standard in the Official Journal.  
10. Final date for comments : 19 August 2 018 
11. Texts available from : National enquiry point [X] or address, telephone and fax 
numbers and email and website addresses, if available, of other body:  
Secretaría de Economía  (Ministry of the Economy)  
Subsecretaría de Competitividad y Normatividad (Under -Secretariat of Competitiveness 
and Standardization)  
Dirección General de Normas  (Directorate -General of Standards)  
Tel.: (+52) 55 5729 9100, Ext. 43244  
Fax: (+52) 55 5520 9715  
Website: http://www.economia.gob.mx/comunidad -negocios/normalizacion/catalogo -
mexicano -de-normas  
Email: normasomc@ economia.gob.mx  / sofia.pacheco@economia.gob.mx  / 
jose.ramosr@economia.gob.mx  
 
Text available from:  
http://www.dof.gob.mx/nota_detalle.php?codigo=5527063&fecha=20/06/2018  
 
https://members.wto.org/crnattachments/2018/TBT/MEX/18_3290_00_s.pdf