Wis. Admin. Code Department of Natural Resources NR 810.61

Current through September 30, 2024

Section NR 810.61 - CT table for Cryptosporidium when using ozone

1

Log credit	Water Temperature, °C
[LESS than]=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

1Systems may use this equation to determine log credit between the indicated values: Log credit = (0.0397 x (1.09757)Temp) x CT.

Wis. Admin. Code Department of Natural Resources NR 810.61

CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10.