S.D. Admin. R. 74:51:01:50
The criteria of parameters for immersion recreation waters and their allowable variations that are not included under § 74:51:01:55 and Appendix B, unless set under § 74:51:01:24, are as found in the following table and only apply May 1 - September 30:
Parameter | Criteria | Unit of Measure | Special Conditions |
Dissolved oxygen as measured anywhere in the water column of a non-stratified water body, or in the epilimnion and metalimnion of a stratified water body | >= 5.0 | mg/L | daily minimum |
Escherichia coli | <= 126 | /100 mL | geometric mean based on a minimum of 5 samples obtained during separate 24-hour periods for any 30-day period |
<= 235 | in any one sample | ||
Microcystin | 8 | µg/L | Not be exceeded in more than three 10-day assessment periods over the course of the recreation season |
Cylindrospermopsin | 15 | µg/L |
S.D. Admin. R. 74:51:01:50
General Authority: SDCL 34A-2-11, 34A-2-93.
Law Implemented: SDCL 34A-2-10, 34A-2-11.