St. Patrick's Day River Dye 1

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 4

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 7

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 11

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 13

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 20

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 26

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 28

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 31

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 32

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 33

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 35

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 40

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 44

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 45

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 49

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 57

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 59

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 62

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 63

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 65

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 66

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 72

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 73

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 74

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 75

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 77

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 81

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 82

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 83

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 84

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 86

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 94

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 96

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 97

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 102

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 105

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 107

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 108

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 113

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 117

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 118

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 120

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 123

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 126

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 127

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 129

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 130

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 132

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 134

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 135

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 136

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 138

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 141

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 142

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 143

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 145

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 146

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 149

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 151

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 153

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 154

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 155

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 157

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 158

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 159

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 160

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 162

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 163

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 164

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 165

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 166

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 167

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 170

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 173

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 176

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)

St. Patrick's Day River Dye 178

March 17th, 2012: Members of the plumbers' union dye the Chicago River green for St. Patrick's Day along with the honorary winner from 93XRT. (credit: Steve Hardy/CBS Local)