A more measured world of water — CASE STUDY: MELBOURNE WATER FLUORIDE LEVELSA healthy balance Studies show that low concentrations of fluoride in water can help to reduce incidences of tooth decay. However, doses above 1.5mg/l have been linked to medical disorders such as dental and skeletal fluorosis and osteoporosis, so there is certainly a balance to strike. Melbourne Water needed a reliable way to accurately measure and control the fluoride levels to avoid harming customers. A problem of process Accurately monitoring fluorosilic acid (FSA) levels is challenging. During the fluoridation process, ambient temperature changes are common and this can lead to drift in levels. Also, Melbourne Water used a competitor’s fluoride monitors which required a great deal of mainten

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