Minnesota Legislature
Office of the Revisor of Statutes
Minnesota Administrative Rules
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4715.5500 REGENERATION SANITATION PROCEDURES.
All new or used water conditioning equipment shall be disinfected before being installed. All portable exchange water conditioning equipment shall be disinfected during every regeneration. Disinfection shall be achieved by the application of chlorine or a chlorine compound such as sodium or calcium hypochlorite, during the fresh water rinse, to provide an effluent minimum chlorine residual and time combination as given in the following table:
| Minimum Time Minutes |
Minimum Chlorine Residual -- parts per million |
| 4 | 20 |
| 5 | 15 |
| 10 | 7.5 |
| 15 | 5.0 |
| 20 | 4.0 |
History:
L 2007 c 140 art 7 s 13; art 13 s 4
Published Electronically:
May 14, 2012
Official Publication of the State of Minnesota
Revisor of Statutes