US lawWisconsinRegulationsNRChapter NR 810 — Requirements For The Operation And Maintenance Of Public Water SystemsNR 810.50Wis. Admin. Code NR 810.50CT table for giardia when using free chlorine at 15 ° CLast amended: 2010Year: 2026Length: 12 wordsOfficial source Cite as Wis. Admin. Code NR § 810.50CT table for giardia when using free chlorine at 15 ° C.PreviousWis. Admin. Code NR 810.49NextWis. Admin. Code NR 810.295