Silkworth Sports Complex was closed in June after higher than normal levels of bacteria were found during routine monitoring.
The bug can lead to Legionnaires' disease, a potentially fatal form of pneumonia.
Work on a new system to minimise the risk of future contamination is due to be completed by the end of August.
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For more information regarding Legionella please feel free to contact us on 01844 299499 or info@ges-water.co.uk