Vannkvalitet

This document describes a spectrophotometric method for determining the chlorophyll-a content as a measure of the amount of phytoplankton for all types of water. Assuming a maximum sample volume of 2 l, chlorophyll-a content values of 5 µg/l or more can be determined. The determination limit can be calculated by each lab individually and it can be as low as 0,5 µg/l using 2 l of sample (or even more) and a 50 mm cuvette.

This document is intended for all water utilities supplying water and/or wastewater services regardless of the type of organization or of the size of the utility.
This document specifies guidelines for the planning and implementation of water and wastewater systems' infrastructure hardening.
This document is applicable to all water utilities, of whatever size whether public or private, that wish to plan or review the effectiveness and efficiency of their water and/or wastewater system infrastructure hardening.

This document provides guidelines on alternative drinking water service (AWS) provision during a crisis for essential services, key establishments and facilities, and farms (animals).

This document addresses:

a)AWS principles and methods;

b)AWS operational planning and implementation.

This document is not applicable to:

1)planned water supply interruptions forming part of drinking water utilities’ normal operations;
NOTE However, many of the principles and methods described can be appropriate in such circumstances.

2)alternative drinking water supply (ADWS) (service) provision during a crisis for urban purposes, which is covered by ISO24527;

3)water supplied to temporary settlements such as refugee camps, which is covered by ISO24519;

4)the development and implementation of a crisis management system for water service, which is covered by ISO 24518 and ISO/TS 24520.