Chapter 21-19 - WATER QUALITY MONITORING REGULATIONSBrowse as ListSearch WithinRule 21-1900 - PURPOSE AND SCOPERule 21-1901 - QUALITY ASSURANCE PROJECT PLANRule 21-1902 - QUALITY ASSURANCE MANUALRule 21-1903 - DISCHARGE PERMIT SELF-MONITORINGRule 21-1904 - OTHER MONITORINGRule 21-1999 - DEFINITIONS