Action
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Testing
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Reporting
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Results
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Once daily record total volume of water treated in past day and quantity of fluoride chemical used
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Water utility calculates the average dose of fluoride over past day
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Water utility records results on Form 2 (solution feed), Form 3 (dry feed). Water utility keeps copies of forms
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Calculated final concentration (background fluoride + added fluoride) should be 1 mg/L, ± 5%
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Once daily sample of water entering the retic, downstream of fluoride dosing point, upstream of clear water tank or reservoir
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Water utility tests fluoride concentration.
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Water utility records daily results (Fluoride daily WU) on Form 4 for each month. Water utility enters results in NSW Drinking Water Database, or sends copy of Form 4 to NSW Health in first week of the next month
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Daily results should be as close as possible to 1 mg/L, and in the range of 0.9 mg/L to 1.5 mg/L
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Weekly samples from two sites in the reticulation. Sites should rotate
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Water utility tests fluoride concentration.
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Water utility records weekly results (Fluoride weekly WU) on Form 4 for each month. Water utility enters results in NSW Drinking Water Database, or sends copy of Form 4 to NSW Health in first week of the next month
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Weekly results should be as close as possible to 1 mg/L, and in the range of 0.9 mg/L to 1.5 mg/L
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Once monthly sample of water in the retic, taken in first week of each month. Sample will use either an allocated Chemistry label or Fluoride label.
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Water Utility tests fluoride concentration and records result on label. Sample sent to FASS for analysis. FASS calculates Fluoride Ratio (Water Utility result ÷ by FASS result)
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The Water utility result (Fluoride WU result), FASS result (Fluoride) and Fluoride Ratio are entered into the Drinking Water Database by FASS
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Monthly results should be as close as possible to 1 mg/L, and between 0.9 mg/L and 1.5 mg/L
Fluoride Ratio should be around 1, and between 0.8 and 1.2
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