Standardization of the methods for characterizing, categorizing, preparing, treating, recycling and managing sludge and products from urban wastewater collection systems, night soil, storm water handling, water supply treatment plants, wastewater treatment plants for urban and similar industrial waters. It includes all sludge that may have similar environmental and/or health impacts.

Standardization of measurement methods for characterizing and categorizing encompasses: sampling methods, physical, chemical and microbiological parameters analysis, preparation of sludge, physical behaviour of sludge, all required for the characterization of sludge with a view to facilitate decisions on the choice of the treatment procedures and of the use and disposal of sludge.


  • hazardous sludge from industry and dredged sludge already covered by ISO/TC 190 "Soil Quality"

Quick links


Published ISO standards *


ISO standards under development *

Participating members
Observing members

* number includes updates

Reference Title Type
ISO/TC 275/WG 1   Terminology Working group
ISO/TC 275/WG 2   Characterization methods Working group
ISO/TC 275/WG 3   Anaerobic digestion Working group
ISO/TC 275/WG 4   Land application Working group
ISO/TC 275/WG 5   Thermal processes Working group
ISO/TC 275/WG 6   Thickening and dewatering Working group
ISO/TC 275/WG 7   Inorganics and nutrients recovery Working group
ISO/TC 275/WG 8   Communication and Management of Public Perception Working group
Liaison Committees to ISO/TC 275

The committees below can access the documents of ISO/TC 275:

Reference Title ISO/IEC
ISO/TC 147/SC 6 Sampling (general methods) ISO
ISO/TC 190 Soil quality ISO
ISO/TC 190/SC 3 Chemical and physical characterization ISO
ISO/TC 282 Water reuse ISO
ISO/TC 297 Waste collection and transportation management ISO


Liaison Committees from ISO/TC 275

ISO/TC 275 can access the documents of the committees below:

Reference Title ISO/IEC
ISO/TC 134 Fertilizers, soil conditioners and beneficial substances ISO
ISO/TC 147 Water quality ISO
ISO/TC 190 Soil quality ISO
ISO/TC 190/SC 3 Chemical and physical characterization ISO
ISO/TC 224 Drinking water, wastewater and stormwater systems and services ISO
ISO/TC 255 Biogas ISO
ISO/TC 282 Water reuse ISO
ISO/TC 282/SC 1 Treated wastewater reuse for irrigation ISO
Date Month Location TC/SC Note
12 October 2023 Saint-Denis (France) ISO/TC 275  

* Information definite but meeting not yet formally convened
** Provisional

ISO/TC 275 - Secretariat

AFNOR [France]

Association française de normalisation
11 rue Francis de Pressensé
F-93571 La Plaine Saint-Denis Cedex

Tel: +33 1 41 62 80 00
Fax: +33 1 49 17 90 00