Table 1 Performance Indicators for Fluoridation plants in Community Y and Community X
From: Feasibility and costs of water fluoridation in remote Australian Aboriginal communities
Overall Plant Performance | Community X | Community Y |
|---|---|---|
Number of days in trial | 708 | 758 |
Number of days of operation with functioning probes (as a percentage of total number of days)* | 247 (35%) | 393 (52%) |
Number of days of operation with malfunctioning probes (as a percentage of total number of days)* | 318 (45%) | 236 (31%) |
Number of days plant not operational (as a percentage of total number of days) | 143 (20%) | 129 (17%) |
Number of days fluoride estimated to be within recommended range (0.6 mg/L +/-0.1)* | 198 (28%) | 19 (3%) |
Number of days fluoride < 0.6 mg/L * | 54 (8%) | 19 (3%) |
Number of days fluoride > 1.0 mg/L | 0 | 1 (identified by field testing) |
Number. of plant shutdowns | 3 | 3 |
Number of times fluoride > 1.0 mg/L caused a plant shutdown | 0 (Community X was shut down as a precautionary measure following a high reading in Community Y) | 1 |
Reasons for plant shutdowns | â– Faulty probe readings detected by field testing â– Probe replacement â– Fluoride accumulating on the base of the tank | â– Faulty probe readings detected by field testing. â– Probe replacement |
Reasons for fluoride levels falling outside specified range | â– Faulty probe readings | â– Faulty probe readings |