Collection

Safe Chlorination of Drinking Water

Use the materials in this collection when facilitating and in-person Chlorination for Safe Drinking Water Workshop.

This collection includes a workshop training manual, participant workbook, as well as many other resources for both facilitators and participants.

Co-developed with

Languages

ArabicEnglishFrenchPortuguese (Brazil)Spanish

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Chlorination Card Game and Instructions

The chlorination card game helps people understand how chlorine works as a disinfection option for drinking water in a variety of conditions. This resource includes the cards and the instructions for facilitating the activity.

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Chlorination Card Game - Cards Only

The chlorination card game helps people understand how chlorine works as a disinfection option for drinking water in a variety of conditions. This resource includes the cards only.

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Check Before you Disinfect: Turbidity, pH, and Temperature in Drinking Water Chlorination

Turbidity, pH, and temperature can all impact how fast and how well chlorine products can disinfect drinking water. Use this guide to determine how these parameters will affect your chlorine dosage and contact time.

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How to Make a 1% Chlorine Solution

Follow this guide to prepare a 1% chlorine solution that can be used for the Modified Horrock's Test and disinfection of the water supply.

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Calculate your Chlorine Dose: Modified Horrocks' Test Instructions

This guide provides instructions for conducting the Modified Horrocks Test. This test is used to determine the effective chlorine dose for batch chlorination of drinking water.

E-Learning

Using the Modified Horrocks' Test to Calculate effective Chlorine Dosage

The Modified Horrocks' Test is a method of calculating the correct chlorine dosage for a known quantity of water. Follow along with Peter Thomson, senior director at CAWST as he conducts the Horrcks' test to calculate the correct chlorine dosage for a batch of drinking water.

Web Link

Chlorine Calculator

Use this calculator to determine the chlorine needed for disinfecting wells, drinking water, and storage tanks. Read instructions before use.

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Pooltester User Guide

This guide provides instructions on the correct use of a pooltester kit to measure pH, free residual chlorine (FRC) and total chlorine (TC).

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How to Measure Turbidity Using a Turbidity Tube

Step-by-step instructions for using a turbidity tube to measure how cloudy water is and determine if pre-treatment may be needed before disinfection.

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Turbidity Tube Product Sheet

This product sheet has a product description, distributor information, availability, cost, storage, and maintenance information about turbidity tubes.

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Store Chlorine Products Safely!

Follow the guidelines in this poster to store and transport chlorine products safely. This poster is ideal for printing and placing in any location where chlorine products are handled and stored.

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Handle Chlorine Products Safely!

Follow the guidelines in this poster to handle and use chlorine products safely. This poster is ideal for printing and placing in any location where chlorine products are handled and stored.

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Participant Workbook - Chlorination for Safe Drinking Water

This participant workbook is an essential tool for the Chlorination for Safe Drinking water in-person workshop. It is meant to be printed for each participant to use during and after the course.

About CAWST

CAWST is a Canadian charity and licensed engineering firm. We address the global need for safe drinking water and sanitation by building local knowledge and skills on household solutions people can implement themselves.