CT 90 - Urban water systems

Technical Comission 90

The purpose of the Technical Committee for Standardisation No. 90 (TC 90) is to develop normative documents and issue normative recommendations in the field of Urban Water Systems. The standards developed apply to infrastructure and services in urban water systems, namely: water supply systems, wastewater systems, rainwater systems and water reuse. LNEC is the Sector Standardisation Body (ONS) for this field, appointed by the Portuguese Quality Institute (IPQ).

In 1990, TC 90 began supporting European standardisation activities carried out by the European Committee for Standardisation (CEN) and in 2004 it began supporting international standardisation activities carried out by the International Standards Organisation (ISO). The following Technical Committees are followed:

• CEN/TC 164 – Water supply
• CEN/TC 165 – Waste water engineering
• ISO/TC 282 – Water reuse
• ISO/TC 224 – Drinking water, wastewater and stormwater systems and services

In addition to this technical support, CT 90 also drafts the Portuguese version of standards, concentrating this effort on those where translation can facilitate their adoption by the national technical community.

Organization

The bodies of TC 90 are the Presidency and Secretariat, the Plenary and the Subcommittees (SC). Essentially, the extensive work of producing and analysing normative documents is done at SC level:

• TC 90/SC 01 – Water supply systems
• TC 90/SC 02 – Wastewater systems
• TC 90/SC 03 – Water reuse
• TC 90/SC 04 – Drinking water, wastewater and stormwater systems and services

Coordination of activities

The national water sector is represented in the presidencies of TC 90 and its respective SCs, by representatives of the following organisations:

• TC 90 – National Civil Engineering Laboratory (ONS in the field of urban water systems)
• TC 90/SC 01 - Entidade Reguladora dos Serviços de Águas e Resíduos (water and waste services regulator and competent authority for the quality of water for human consumption)
• TC 90/SC 02 - Águas do Tejo Atlântico (industry - provision of services in urban water systems)
• TC 90/SC 03 - Portuguese Environment Agency (implementation of environmental policies)
• TC 90/SC 04 – National Civil Engineering Laboratory (scientific research and technological development)

TC 90 is chaired by LNEC Assistant Researcher Rita Ribeiro (rribeiro@lnec.pt).

More information on TC 90 is available on the IPQ website.