Water quality - Sampling - Part 21: Guidance on sampling of drinking water distributed by tankers or means other than distribution pipes
(ISO 5667-21:2010, MOD)
This part of MS ISO 5667-21 establishes principles to be applied to the techniques of sampling water provided for drinking and for use in the manufacture of food and beverage products.
The guidance given in this part of MS ISO 5667-21 is generally confined to those circumstances where water is drawn from municipal or similar public or private abstraction, treatment or distribution systems for which prior treatment or quality assessment has resulted in the water being classified as suitable for drinking or potable process purposes. Specifically, this part of MS ISO 5667-21 is applicable to water that is supplied by tanker or other non- contiguous bulk means, but not contiguously as part of a piped distribution system, during any stage of use up to and including the point of consumption or transfer to a piped distribution system. This part of MS ISO 5667-21 is also applicable to the distribution and bulk storage of water on aircraft, trucks, trains, ships, and other vessels and vehicles, as well as to sampling situations that can arise during the investigation of system defects, initiation of new systems, re-initiation of systems that have been unused for long periods or emergency situations where the safety of sampling operatives is not compromised.
