Any public water system that is fluoridating shall comply with the temperature-appropriate fluoride levels in Table 64433.2-A. The system shall determine, and submit to the State Board, its annual average of maximum daily air temperatures based on the five calendar years immediately preceding the current calendar year.

Table 64433.2-A Optimal Fluoride Levels

Annual average of maximum

Optimal

Control Range, mg/L

daily air temperatures, degrees

fluoride

Low

High

Fahrenheit

Celsius

level, mg/L

50.0 to 53.7

10.0 to 12.0

1.2

1.1

1.7

53.8 to 58.3

12.1 to 14.6

1.1

1.0

1.6

58.4 to 63.8

14.7 to 17.7

1.0

0.9

1.5

63.9 to 70.6

17.8 to 21.4

0.9

0.8

1.4

70.7 to 79.2

21.5 to 26.2

0.8

0.7

1.3

79.3 to 90.5

26.3 to 32.5

0.7

0.6

1.2

Note: Authority cited: Sections 116271, 116410 and 116415, Health and Safety Code. Reference: Sections 116410 and 116415, Health and Safety Code.

History

1. New section filed 3-23-98; operative 4-22-98 (Register 98, No. 13).

2. Change without regulatory effect amending first paragraph and Note filed 6-2-2015 pursuant to section 100, title 1, California Code of Regulations (Register 2015, No. 23).