ISO INTERNATIONAL STANDARD 5667-21 First edition 2010-10-15 Water quality Sampling - Part 21: Guidance on sampling of drinking water distributed by tankers or means other than distribution pipes Qualité de I'eau— Echantillonnage - Partie 21: Lignes directrices pour I'échantillonnage de I'eau potable distribuee par camions-citernes ou d'autres moyens que les tuyaux de distribution Reference number ISO 5667-21:2010(E) @ ISO 2010 y IHS under ted without license from IHS Not for Resale ISO 5667-21:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The IsO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below COPYRIGHTPROTECTEDDOCUMENT @ISO2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, isO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ Iso 2010 - All rights reserved I without license from IHS Not for Resale ISO 5667-21:2010(E) Contents Page Foreword Introduction 1 Scope 2 Normative references. 3 Terms and definitions 4 Monitoring programme design .. 5 Sampling equipment .. 6 Sampling programme design... 6.1 General.... 6.2 Frequency and timing of sampling. 6.3 Location of sampling points. 6.4 Pre-collection cleaning, disinfection, and flushing .... 6.5 Assessment of hazards .. 7 Sample collection and handling 7.1 General 7.2 Volume of samples 8 Fieldmeasurements 9 Safety precautions 6 10 Sample identification and records. 11 Quality assurance and quality control for collection and handling of samples ... 10 11.1 General .... .10 11.2 Sampling manual... 10 11.3 Training of samplers 11.4 Independent audits. Annex A (informative) Examples of hazard factors associated with failure to clean and disinfect tanks between fillings, including refilling before emptying .... 12 Annex B (informative) Example of a sampling report.. ..13 Annex C (informative) Guidance on the sampling of biofilms . 14 Bibliography. 15 Copyrght International Organization for Standardizalon ghts reserved ii nse from IHS Not for Resale