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An LZVT is defined in HSG179:2018 as "a practical exercise designed to highlight any areas of the pool surface or pool basin floor where a casualty cannot be seen from any particular lifeguard position, especially those ...

GUIDANCE

A lifeguard zone visibility test (LZVT) is a recognised method for assessing visibility in swimming pools. The method is recognised in HSG179:2018 (para 84-86, 90-91), and a supporting extract is hosted on the RLSS UK web pages (link). 

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