Good Practice Guide for the Supply of Hydrated Lime for Use in Water Treatment

Scope

This Guide covers requirements for ensuring hydrated lime is of a suitable quality for use in drinking water treatment.

This Guide does not cover:

• Environmental protection or health and safety measures associated with the use of hydrated lime including labelling, site and storage, transportation, packaging or disposal requirements.
• Operational procedures for using hydrated lime.

Purpose

The main purpose of this Guide is to provide purchasers, manufacturers and suppliers with the minimum physical, chemical and testing requirements for Hydrated Lime to meet safe limits for drinking water supplies. The requirements align with requirements for drinking-water safety outlined in the Drinking Water Standards for New Zealand (Ministry of Health, 2008).