TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE F: PUBLIC WATER SUPPLIES
CHAPTER I: POLLUTION CONTROL BOARD
PART 611 PRIMARY DRINKING WATER STANDARDS
SECTION 611.TABLE I CT VALUES (MG·MIN/l) FOR CRYPTOSPORIDIUM INACTIVATION BY OZONE
SUBTITLE F: PUBLIC WATER SUPPLIES
CHAPTER I: POLLUTION CONTROL BOARD
PART 611 PRIMARY DRINKING WATER STANDARDS
SECTION 611.TABLE I CT VALUES (MG·MIN/l) FOR CRYPTOSPORIDIUM INACTIVATION BY OZONE
Section 611.TABLE I CT Values (mg·min/ℓ) for Cryptosporidium Inactivation by Ozone
|
Log Credit |
Water Temperature (°C) |
||||||||||
|
≤ 0.5 |
1 |
2 |
3 |
5 |
7 |
10 |
15 |
20 |
25 |
30 |
|
|
0.25 |
6.0 |
5.8 |
5.2 |
4.8 |
4.0 |
3.3 |
2.5 |
1.6 |
1.0 |
0.6 |
0.39 |
|
0.5 |
12 |
12 |
10 |
9.5 |
7.9 |
6.5 |
4.9 |
3.1 |
2.0 |
1.2 |
0.78 |
|
1.0 |
24 |
23 |
21 |
19 |
16 |
13 |
9.9 |
6.2 |
3.9 |
2.5 |
1.6 |
|
1.5 |
36 |
35 |
31 |
29 |
24 |
20 |
15 |
9.3 |
5.9 |
3.7 |
2.4 |
|
2.0 |
48 |
46 |
42 |
38 |
32 |
26 |
20 |
12 |
7.8 |
4.9 |
3.1 |
|
2.5 |
60 |
58 |
52 |
48 |
40 |
33 |
25 |
16 |
9.8 |
6.2 |
3.9 |
|
3.0 |
72 |
69 |
63 |
57 |
47 |
39 |
30 |
19 |
12 |
7.4 |
4.7 |
A supplier may use the following equation to determine log credit between the indicated values:
Log credit = (0.0397 ´ (1.09757)Temp(in °C)) ´ CT
BOARD NOTE: Derived from the table at 40 CFR 141.720(b)(2) (2012).
(Source: Amended at 37 Ill. Reg. 1978, effective February 4, 2013)