EVALUATION OF DENITRIFICATION SYSTEMS FOR IMPROVING GROUNDWATER
           QUALITY FROM ON-SITE WASTE DISPOSAL SYSTEMS







                              BYRON SHAW
                            STEVEN OSESEK







                            FEBRUARY 1993




                     PROJECT MID REPORT TO DNR
















                                              Water Resources Center
                                              University of Wisconsin- MSN
                                              1975 Willow Drive
                                              Madison, WI 53706