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Venturi Inline Chlorinator Fact Sheet

This fact sheet outlines the use of Venturi in-line chlorinators—non-electric devices that mix a 1% liquid chlorine solution into water via pressure changes in a pipe. Ideal for piped infrastructure in low-resource settings, the fact sheet covers key topics including source water requirements, operation and maintenance, feasibility, and calibration and dosage adjustment—advising on testing methods like the Modified Horrocks’ test. Learn how to safely use liquid chlorine, troubleshoot flow issues, and adapt to local conditions. A practical resource for engineers, implementers, and WASH professionals.

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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.