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   Counties page > Pb in Conterminous US > Pb in central US

Lead in Counties of the Central US

Fremont Co.: Pb= 23.0 +/- 4.6 ppm Tripp Co.: Pb= 18.1 +/- 4.8 ppm Shannon Co.: Pb= 35.3 +/- 6.2 ppm Niobrara Co.: Pb= 23.4 +/- 4.5 ppm Natrona Co.: Pb= 21.3 +/- 3.6 ppm Allamakee Co.: Pb= 15.6 +/- 1.3 ppm Winneshiek Co.: Pb= 15.0 +/- 1.1 ppm Kossuth Co.: Pb= 16.1 +/- 2.7 ppm Lincoln Co.: Pb= 16.0 +/- 1.1 ppm Mitchell Co.: Pb= 19.6 +/- 6.3 ppm Turner Co.: Pb= 16.4 +/- 3.6 ppm Hutchinson Co.: Pb= 17.8 +/- 7.0 ppm Charles Mix Co.: Pb= 18.0 +/- 5.4 ppm Gregory Co.: Pb= 19.3 +/- 7.9 ppm Converse Co.: Pb= 22.5 +/- 4.0 ppm Douglas Co.: Pb= 14.8 +/- 0.6 ppm Fall River Co.: Pb= 34.4 +/- 7.1 ppm Crawford Co.: Pb= 9.6 +/- 3.6 ppm Todd Co.: Pb= 16.7 +/- 1.5 ppm Bennett Co.: Pb= 16.3 +/- 1.1 ppm Sioux Co.: Pb= 21.7 +/- 4.0 ppm O Cerro Gordo Co.: Pb= 21.2 +/- 3.4 ppm Hancock Co.: Pb= 21.1 +/- 4.2 ppm Clay Co.: Pb= 21.0 +/- 5.6 ppm Palo Alto Co.: Pb= 17.7 +/- 1.7 ppm Chickasaw Co.: Pb= 16.4 +/- 2.2 ppm Floyd Co.: Pb= 24.0 +/- 4.4 ppm Grant Co.: Pb= 70.0 +/- 151.1 ppm Iowa Co.: Pb= 131.9 +/- 172.9 ppm Yankton Co.: Pb= 22.0 +/- 6.1 ppm Bon Homme Co.: Pb= 21.2 +/- 4.5 ppm Union Co.: Pb= 36.9 +/- 13.7 ppm Clay Co.: Pb= 49.9 +/- 23.8 ppm Fayette Co.: Pb= 18.0 +/- 2.7 ppm Clayton Co.: Pb= 18.1 +/- 1.9 ppm Sioux Co.: Pb= 23.2 +/- 3.5 ppm Dawes Co.: Pb= 24.2 +/- 4.8 ppm Sheridan Co.: Pb= 17.5 +/- 6.1 ppm Cherry Co.: Pb= 13.3 +/- 1.6 ppm Keya Paha Co.: Pb= 18.2 +/- 4.1 ppm Boyd Co.: Pb= 20.7 +/- 2.9 ppm Cherokee Co.: Pb= 53.0 +/- 66.2 ppm Plymouth Co.: Pb= 109.6 +/- 151.1 ppm Buena Vista Co.: Pb= 15.8 +/- 1.9 ppm Pocahontas Co.: Pb= 26.0 +/- 15.5 ppm Wright Co.: Pb= 17.3 +/- 1.7 ppm Franklin Co.: Pb= 19.7 +/- 2.3 ppm Humboldt Co.: Pb= 18.8 +/- 6.3 ppm Butler Co.: Pb= 20.4 +/- 2.6 ppm Bremer Co.: Pb= 15.3 +/- 1.1 ppm Holt Co.: Pb= 20.3 +/- 4.5 ppm Knox Co.: Pb= 23.6 +/- 4.1 ppm Cedar Co.: Pb= 30.9 +/- 4.7 ppm Brown Co.: Pb= 15.3 +/- 3.4 ppm Lafayette Co.: Pb= 259.6 +/- 352.8 ppm Rock Co.: Pb= 21.9 +/- 3.3 ppm Dixon Co.: Pb= 29.7 +/- 4.5 ppm Dubuque Co.: Pb= 19.8 +/- 4.2 ppm Delaware Co.: Pb= 21.5 +/- 5.9 ppm Webster Co.: Pb= 18.7 +/- 4.0 ppm Buchanan Co.: Pb= 18.4 +/- 1.2 ppm Black Hawk Co.: Pb= 17.2 +/- 2.0 ppm Goshen Co.: Pb= 23.8 +/- 3.7 ppm Platte Co.: Pb= 23.8 +/- 4.1 ppm Woodbury Co.: Pb= 32.8 +/- 31.2 ppm Ida Co.: Pb= 19.5 +/- 6.1 ppm Sac Co.: Pb= 18.3 +/- 1.9 ppm Calhoun Co.: Pb= 19.5 +/- 3.3 ppm Hamilton Co.: Pb= 17.1 +/- 2.0 ppm Hardin Co.: Pb= 18.1 +/- 4.0 ppm Grundy Co.: Pb= 17.9 +/- 1.3 ppm Dakota Co.: Pb= 27.2 +/- 1.9 ppm Jo Daviess Co.: Pb= 57.9 +/- 74.4 ppm Box Butte Co.: Pb= 21.7 +/- 2.8 ppm Pierce Co.: Pb= 30.6 +/- 2.3 ppm Antelope Co.: Pb= 22.5 +/- 5.2 ppm Carbon Co.: Pb= 21.4 +/- 7.8 ppm Albany Co.: Pb= 20.8 +/- 4.8 ppm Jackson Co.: Pb= 20.3 +/- 10.4 ppm Wayne Co.: Pb= 28.1 +/- 2.1 ppm Benton Co.: Pb= 21.2 +/- 1.5 ppm Linn Co.: Pb= 25.0 +/- 6.6 ppm Tama Co.: Pb= 21.9 +/- 2.8 ppm Jones Co.: Pb= 17.3 +/- 1.2 ppm Thurston Co.: Pb= 26.6 +/- 2.7 ppm Sweetwater Co.: Pb= 25.6 +/- 4.3 ppm Monona Co.: Pb= 17.8 +/- 2.1 ppm Crawford Co.: Pb= 18.5 +/- 1.8 ppm Carroll Co.: Pb= 19.0 +/- 2.3 ppm Boone Co.: Pb= 17.0 +/- 2.5 ppm Marshall Co.: Pb= 16.5 +/- 1.5 ppm Greene Co.: Pb= 19.3 +/- 3.0 ppm Story Co.: Pb= 14.4 +/- 1.8 ppm Carroll Co.: Pb= 53.3 +/- 54.8 ppm Grant Co.: Pb= 11.9 +/- 0.6 ppm Hooker Co.: Pb= 12.6 +/- 1.1 ppm Madison Co.: Pb= 25.1 +/- 2.1 ppm Stanton Co.: Pb= 24.0 +/- 1.9 ppm Cuming Co.: Pb= 25.2 +/- 3.2 ppm Wheeler Co.: Pb= 13.2 +/- 1.0 ppm Garfield Co.: Pb= 15.9 +/- 2.0 ppm Thomas Co.: Pb= 13.6 +/- 1.2 ppm Loup Co.: Pb= 14.3 +/- 2.8 ppm Blaine Co.: Pb= 12.9 +/- 1.1 ppm Burt Co.: Pb= 22.0 +/- 2.7 ppm Clinton Co.: Pb= 23.2 +/- 11.0 ppm Garden Co.: Pb= 15.0 +/- 5.1 ppm Morrill Co.: Pb= 21.1 +/- 6.8 ppm Scotts Bluff Co.: Pb= 27.2 +/- 4.7 ppm Cedar Co.: Pb= 18.0 +/- 0.5 ppm Boone Co.: Pb= 20.4 +/- 3.6 ppm Harrison Co.: Pb= 21.0 +/- 3.8 ppm Shelby Co.: Pb= 17.7 +/- 1.2 ppm Dallas Co.: Pb= 16.4 +/- 1.7 ppm Polk Co.: Pb= 17.4 +/- 2.6 ppm Audubon Co.: Pb= 16.8 +/- 0.9 ppm Guthrie Co.: Pb= 17.1 +/- 1.8 ppm Jasper Co.: Pb= 22.3 +/- 5.4 ppm Iowa Co.: Pb= 20.6 +/- 4.2 ppm Poweshiek Co.: Pb= 25.3 +/- 4.9 ppm Johnson Co.: Pb= 18.2 +/- 1.8 ppm Rock Island Co.: Pb= 16.4 +/- 2.1 ppm Scott Co.: Pb= 19.2 +/- 3.0 ppm McPherson Co.: Pb= 12.1 +/- 0.8 ppm Arthur Co.: Pb= 12.2 +/- 0.7 ppm Colfax Co.: Pb= 21.6 +/- 1.7 ppm Platte Co.: Pb= 22.9 +/- 1.7 ppm Dodge Co.: Pb= 24.7 +/- 4.7 ppm Custer Co.: Pb= 22.3 +/- 6.1 ppm Greeley Co.: Pb= 17.2 +/- 4.1 ppm Valley Co.: Pb= 18.8 +/- 2.9 ppm Logan Co.: Pb= 11.6 +/- 0.6 ppm Banner Co.: Pb= 24.7 +/- 4.0 ppm Washington Co.: Pb= 24.6 +/- 2.6 ppm Laramie Co.: Pb= 19.9 +/- 3.7 ppm Muscatine Co.: Pb= 20.5 +/- 3.8 ppm Henry Co.: Pb= 15.3 +/- 3.3 ppm Nance Co.: Pb= 20.2 +/- 2.7 ppm Warren Co.: Pb= 17.4 +/- 2.5 ppm Madison Co.: Pb= 20.7 +/- 0.8 ppm Washington Co.: Pb= 19.7 +/- 2.1 ppm Keokuk Co.: Pb= 16.8 +/- 3.2 ppm Mahaska Co.: Pb= 25.7 +/- 3.7 ppm Marion Co.: Pb= 22.0 +/- 1.0 ppm Pottawattamie Co.: Pb= 21.8 +/- 4.6 ppm Cass Co.: Pb= 17.6 +/- 0.6 ppm Adair Co.: Pb= 18.6 +/- 1.4 ppm Butler Co.: Pb= 25.1 +/- 1.1 ppm Saunders Co.: Pb= 24.8 +/- 2.9 ppm Cheyenne Co.: Pb= 25.0 +/- 2.8 ppm Louisa Co.: Pb= 17.4 +/- 1.1 ppm Keith Co.: Pb= 14.7 +/- 2.7 ppm Polk Co.: Pb= 22.1 +/- 3.2 ppm Merrick Co.: Pb= 23.8 +/- 3.2 ppm Lincoln Co.: Pb= 14.7 +/- 2.3 ppm Kimball Co.: Pb= 26.6 +/- 2.2 ppm Sherman Co.: Pb= 20.3 +/- 3.3 ppm Howard Co.: Pb= 18.9 +/- 2.6 ppm Douglas Co.: Pb= 21.5 +/- 1.4 ppm Mercer Co.: Pb= 18.7 +/- 4.1 ppm Deuel Co.: Pb= 25.2 +/- 2.8 ppm Sarpy Co.: Pb= 21.7 +/- 2.7 ppm Hamilton Co.: Pb= 30.5 +/- 7.3 ppm Jefferson Co.: Pb= 17.7 +/- 1.7 ppm Henry Co.: Pb= 18.9 +/- 1.7 ppm Wapello Co.: Pb= 22.0 +/- 1.8 ppm Clarke Co.: Pb= 20.9 +/- 2.7 ppm Monroe Co.: Pb= 21.2 +/- 1.5 ppm Lucas Co.: Pb= 22.9 +/- 3.1 ppm Mills Co.: Pb= 22.6 +/- 2.9 ppm Montgomery Co.: Pb= 19.5 +/- 1.0 ppm Adams Co.: Pb= 18.2 +/- 1.9 ppm Union Co.: Pb= 18.5 +/- 1.7 ppm Knox Co.: Pb= 21.7 +/- 4.0 ppm Des Moines Co.: Pb= 16.8 +/- 2.0 ppm Henderson Co.: Pb= 21.9 +/- 2.6 ppm Warren Co.: Pb= 19.7 +/- 2.4 ppm Cass Co.: Pb= 25.6 +/- 5.3 ppm Dawson Co.: Pb= 19.4 +/- 3.1 ppm Buffalo Co.: Pb= 25.3 +/- 8.3 ppm York Co.: Pb= 32.3 +/- 3.7 ppm Seward Co.: Pb= 30.8 +/- 4.2 ppm Hall Co.: Pb= 22.5 +/- 3.2 ppm Lancaster Co.: Pb= 31.6 +/- 4.7 ppm Perkins Co.: Pb= 17.2 +/- 3.1 ppm Routt Co.: Pb= 21.8 +/- 4.4 ppm Moffat Co.: Pb= 23.6 +/- 5.1 ppm Jackson Co.: Pb= 24.5 +/- 7.2 ppm Sedgwick Co.: Pb= 24.1 +/- 1.6 ppm Logan Co.: Pb= 25.4 +/- 2.1 ppm Weld Co.: Pb= 25.8 +/- 5.5 ppm Larimer Co.: Pb= 31.7 +/- 13.2 ppm Fremont Co.: Pb= 17.9 +/- 1.3 ppm Page Co.: Pb= 19.9 +/- 2.1 ppm Van Buren Co.: Pb= 21.2 +/- 2.4 ppm Taylor Co.: Pb= 21.4 +/- 1.3 ppm Davis Co.: Pb= 22.5 +/- 2.9 ppm Ringgold Co.: Pb= 21.2 +/- 1.7 ppm Decatur Co.: Pb= 32.3 +/- 12.7 ppm Appanoose Co.: Pb= 19.2 +/- 1.4 ppm Wayne Co.: Pb= 25.8 +/- 5.3 ppm Lee Co.: Pb= 18.4 +/- 2.6 ppm Otoe Co.: Pb= 30.7 +/- 6.8 ppm Phillips Co.: Pb= 24.7 +/- 1.5 ppm Fulton Co.: Pb= 19.4 +/- 6.4 ppm Frontier Co.: Pb= 17.7 +/- 2.3 ppm Chase Co.: Pb= 17.3 +/- 1.3 ppm Hayes Co.: Pb= 19.4 +/- 3.0 ppm Gosper Co.: Pb= 19.5 +/- 0.9 ppm Adams Co.: Pb= 23.3 +/- 2.3 ppm Fillmore Co.: Pb= 32.0 +/- 2.9 ppm Clay Co.: Pb= 27.6 +/- 3.8 ppm Saline Co.: Pb= 33.7 +/- 4.1 ppm Kearney Co.: Pb= 23.5 +/- 2.6 ppm Phelps Co.: Pb= 21.7 +/- 3.6 ppm Hancock Co.: Pb= 17.8 +/- 5.0 ppm McDonough Co.: Pb= 23.4 +/- 3.9 ppm Clark Co.: Pb= 18.9 +/- 2.5 ppm Scotland Co.: Pb= 17.3 +/- 2.1 ppm Schuyler Co.: Pb= 16.1 +/- 2.3 ppm Putnam Co.: Pb= 15.9 +/- 2.5 ppm Atchison Co.: Pb= 23.1 +/- 4.3 ppm Mercer Co.: Pb= 19.5 +/- 3.4 ppm Nodaway Co.: Pb= 32.3 +/- 16.3 ppm Harrison Co.: Pb= 17.9 +/- 2.6 ppm Worth Co.: Pb= 22.4 +/- 4.8 ppm Nemaha Co.: Pb= 25.4 +/- 6.1 ppm Morgan Co.: Pb= 25.4 +/- 4.3 ppm Gage Co.: Pb= 35.7 +/- 11.9 ppm Johnson Co.: Pb= 31.6 +/- 4.8 ppm Grand Co.: Pb= 54.0 +/- 63.8 ppm Yuma Co.: Pb= 21.5 +/- 2.5 ppm Washington Co.: Pb= 25.6 +/- 2.9 ppm Gentry Co.: Pb= 25.9 +/- 2.8 ppm Sullivan Co.: Pb= 16.7 +/- 2.8 ppm Red Willow Co.: Pb= 16.3 +/- 0.5 ppm Furnas Co.: Pb= 19.7 +/- 2.1 ppm Harlan Co.: Pb= 21.1 +/- 1.8 ppm Hitchcock Co.: Pb= 17.2 +/- 1.7 ppm Nuckolls Co.: Pb= 26.1 +/- 4.3 ppm Thayer Co.: Pb= 31.8 +/- 3.4 ppm Franklin Co.: Pb= 24.6 +/- 5.3 ppm Webster Co.: Pb= 21.4 +/- 1.5 ppm Dundy Co.: Pb= 15.9 +/- 0.6 ppm Jefferson Co.: Pb= 39.7 +/- 19.8 ppm Adair Co.: Pb= 17.5 +/- 4.6 ppm Knox Co.: Pb= 16.2 +/- 2.2 ppm Schuyler Co.: Pb= 11.3 +/- 1.9 ppm Grundy Co.: Pb= 25.7 +/- 6.0 ppm Holt Co.: Pb= 22.5 +/- 3.0 ppm Boulder Co.: Pb= 126.1 +/- 129.0 ppm Pawnee Co.: Pb= 26.8 +/- 2.8 ppm Richardson Co.: Pb= 20.2 +/- 2.8 ppm Lewis Co.: Pb= 21.0 +/- 3.8 ppm Rio Blanco Co.: Pb= 22.8 +/- 11.4 ppm Adams Co.: Pb= 19.0 +/- 5.4 ppm Daviess Co.: Pb= 25.7 +/- 5.8 ppm Andrew Co.: Pb= 23.0 +/- 3.3 ppm Cass Co.: Pb= 13.1 +/- 2.0 ppm Brown Co.: Pb= 12.8 +/- 1.7 ppm Garfield Co.: Pb= 21.2 +/- 2.7 ppm De Kalb Co.: Pb= 26.3 +/- 3.6 ppm Macon Co.: Pb= 17.0 +/- 2.2 ppm Linn Co.: Pb= 17.6 +/- 4.4 ppm Cheyenne Co.: Pb= 18.1 +/- 1.8 ppm Rawlins Co.: Pb= 21.1 +/- 5.5 ppm Jewell Co.: Pb= 22.2 +/- 6.9 ppm Smith Co.: Pb= 17.7 +/- 1.9 ppm Phillips Co.: Pb= 17.3 +/- 1.7 ppm Decatur Co.: Pb= 18.5 +/- 1.2 ppm Republic Co.: Pb= 22.9 +/- 1.8 ppm Washington Co.: Pb= 22.9 +/- 2.6 ppm Norton Co.: Pb= 18.3 +/- 1.5 ppm Marshall Co.: Pb= 25.7 +/- 3.7 ppm Adams Co.: Pb= 35.2 +/- 15.6 ppm Nemaha Co.: Pb= 20.5 +/- 6.2 ppm Brown Co.: Pb= 21.5 +/- 4.4 ppm Doniphan Co.: Pb= 30.6 +/- 11.8 ppm Livingston Co.: Pb= 37.3 +/- 16.2 ppm Shelby Co.: Pb= 14.3 +/- 3.0 ppm Marion Co.: Pb= 20.3 +/- 3.2 ppm Gilpin Co.: Pb= 106.0 +/- 46.9 ppm Eagle Co.: Pb= 29.6 +/- 12.5 ppm Summit Co.: Pb= 57.3 +/- 30.1 ppm Jefferson Co.: Pb= 60.7 +/- 10.5 ppm Denver Co.: Pb= 59.3 +/- 11.6 ppm Morgan Co.: Pb= 23.1 +/- 8.5 ppm Clear Creek Co.: Pb= 143.3 +/- 125.2 ppm Pike Co.: Pb= 17.3 +/- 2.2 ppm Buchanan Co.: Pb= 30.8 +/- 4.6 ppm Scott Co.: Pb= 16.3 +/- 3.0 ppm Caldwell Co.: Pb= 37.2 +/- 12.8 ppm Clinton Co.: Pb= 28.5 +/- 3.6 ppm Arapahoe Co.: Pb= 42.3 +/- 20.1 ppm Chariton Co.: Pb= 22.2 +/- 5.3 ppm Ralls Co.: Pb= 21.8 +/- 1.6 ppm Monroe Co.: Pb= 18.0 +/- 3.7 ppm Cloud Co.: Pb= 22.2 +/- 3.4 ppm Jackson Co.: Pb= 18.2 +/- 4.3 ppm Atchison Co.: Pb= 21.7 +/- 3.1 ppm Carroll Co.: Pb= 60.0 +/- 26.7 ppm Randolph Co.: Pb= 23.3 +/- 5.0 ppm Pike Co.: Pb= 21.7 +/- 3.6 ppm Kit Carson Co.: Pb= 26.4 +/- 3.6 ppm Sherman Co.: Pb= 18.2 +/- 1.3 ppm Thomas Co.: Pb= 20.8 +/- 1.9 ppm Park Co.: Pb= 44.1 +/- 18.1 ppm Osborne Co.: Pb= 16.0 +/- 1.2 ppm Sheridan Co.: Pb= 19.8 +/- 1.4 ppm Rooks Co.: Pb= 15.0 +/- 0.8 ppm Mitchell Co.: Pb= 18.8 +/- 3.5 ppm Graham Co.: Pb= 16.1 +/- 3.0 ppm Clay Co.: Pb= 23.1 +/- 2.7 ppm Elbert Co.: Pb= 35.6 +/- 10.9 ppm Riley Co.: Pb= 24.4 +/- 3.1 ppm Lincoln Co.: Pb= 28.2 +/- 2.9 ppm Pottawatomie Co.: Pb= 30.2 +/- 8.0 ppm Douglas Co.: Pb= 41.1 +/- 7.1 ppm Platte Co.: Pb= 26.6 +/- 2.5 ppm Ray Co.: Pb= 50.4 +/- 17.5 ppm Greene Co.: Pb= 21.4 +/- 3.5 ppm Clay Co.: Pb= 27.2 +/- 2.4 ppm Jefferson Co.: Pb= 21.3 +/- 3.3 ppm Leavenworth Co.: Pb= 19.9 +/- 2.7 ppm Saline Co.: Pb= 23.8 +/- 5.1 ppm Calhoun Co.: Pb= 29.9 +/- 11.4 ppm Lake Co.: Pb= 68.5 +/- 23.1 ppm Mesa Co.: Pb= 20.2 +/- 3.9 ppm Pitkin Co.: Pb= 39.7 +/- 24.5 ppm Audrain Co.: Pb= 18.7 +/- 3.2 ppm Howard Co.: Pb= 28.2 +/- 4.8 ppm Ottawa Co.: Pb= 19.5 +/- 3.6 ppm Lafayette Co.: Pb= 33.8 +/- 5.5 ppm Jersey Co.: Pb= 29.8 +/- 10.4 ppm Gunnison Co.: Pb= 49.7 +/- 51.1 ppm Boone Co.: Pb= 17.7 +/- 4.2 ppm Jackson Co.: Pb= 41.0 +/- 10.4 ppm Lincoln Co.: Pb= 30.4 +/- 9.1 ppm Geary Co.: Pb= 25.6 +/- 2.6 ppm Lincoln Co.: Pb= 16.5 +/- 1.0 ppm Delta Co.: Pb= 26.6 +/- 4.6 ppm Shawnee Co.: Pb= 22.9 +/- 3.0 ppm Wabaunsee Co.: Pb= 26.6 +/- 2.0 ppm Wyandotte Co.: Pb= 24.5 +/- 4.3 ppm Montgomery Co.: Pb= 17.6 +/- 7.6 ppm Logan Co.: Pb= 18.6 +/- 2.0 ppm Wallace Co.: Pb= 18.7 +/- 1.6 ppm Russell Co.: Pb= 14.1 +/- 1.9 ppm Dickinson Co.: Pb= 25.1 +/- 3.5 ppm Ellis Co.: Pb= 16.1 +/- 1.8 ppm Gove Co.: Pb= 18.3 +/- 2.6 ppm Trego Co.: Pb= 16.4 +/- 2.3 ppm El Paso Co.: Pb= 35.2 +/- 7.7 ppm Teller Co.: Pb= 47.5 +/- 19.6 ppm Douglas Co.: Pb= 23.4 +/- 3.6 ppm Callaway Co.: Pb= 16.6 +/- 3.1 ppm Cooper Co.: Pb= 28.1 +/- 7.1 ppm Johnson Co.: Pb= 24.7 +/- 4.2 ppm Chaffee Co.: Pb= 54.7 +/- 21.1 ppm Cheyenne Co.: Pb= 27.3 +/- 6.8 ppm Warren Co.: Pb= 17.2 +/- 5.2 ppm St. Charles Co.: Pb= 30.8 +/- 15.6 ppm Saline Co.: Pb= 23.3 +/- 3.3 ppm Pettis Co.: Pb= 25.8 +/- 6.4 ppm Johnson Co.: Pb= 35.2 +/- 6.5 ppm Moniteau Co.: Pb= 22.5 +/- 4.6 ppm St. Louis Co.: Pb= 40.9 +/- 20.2 ppm Ellsworth Co.: Pb= 16.7 +/- 2.7 ppm Morris Co.: Pb= 24.6 +/- 1.9 ppm Osage Co.: Pb= 25.7 +/- 5.4 ppm Cass Co.: Pb= 37.9 +/- 8.5 ppm Lyon Co.: Pb= 25.9 +/- 4.2 ppm Cole Co.: Pb= 24.4 +/- 7.4 ppm Franklin Co.: Pb= 21.5 +/- 4.2 ppm Miami Co.: Pb= 21.7 +/- 1.7 ppm Gasconade Co.: Pb= 17.2 +/- 10.8 ppm Franklin Co.: Pb= 28.2 +/- 21.7 ppm Osage Co.: Pb= 17.5 +/- 7.3 ppm Wichita Co.: Pb= 19.9 +/- 0.7 ppm Scott Co.: Pb= 20.4 +/- 2.3 ppm Lane Co.: Pb= 18.6 +/- 1.7 ppm Greeley Co.: Pb= 19.3 +/- 0.9 ppm Ness Co.: Pb= 17.9 +/- 1.7 ppm Fremont Co.: Pb= 34.4 +/- 11.2 ppm Rush Co.: Pb= 18.8 +/- 0.8 ppm Barton Co.: Pb= 19.9 +/- 2.6 ppm Morgan Co.: Pb= 25.2 +/- 7.4 ppm Montrose Co.: Pb= 20.4 +/- 4.7 ppm Kiowa Co.: Pb= 26.3 +/- 3.9 ppm McPherson Co.: Pb= 25.6 +/- 3.5 ppm Marion Co.: Pb= 25.0 +/- 3.2 ppm Henry Co.: Pb= 35.6 +/- 18.2 ppm Benton Co.: Pb= 19.5 +/- 4.1 ppm Crowley Co.: Pb= 29.6 +/- 2.7 ppm Rice Co.: Pb= 17.1 +/- 2.1 ppm Pueblo Co.: Pb= 30.4 +/- 4.1 ppm Chase Co.: Pb= 25.7 +/- 3.1 ppm Jefferson Co.: Pb= 71.9 +/- 91.6 ppm Bates Co.: Pb= 21.9 +/- 4.1 ppm Saguache Co.: Pb= 42.3 +/- 48.5 ppm Coffey Co.: Pb= 22.6 +/- 5.0 ppm Miller Co.: Pb= 15.9 +/- 6.8 ppm Anderson Co.: Pb= 24.2 +/- 6.3 ppm Linn Co.: Pb= 28.9 +/- 7.6 ppm Pawnee Co.: Pb= 19.9 +/- 2.0 ppm Ouray Co.: Pb= 239.0 +/- 455.8 ppm Maries Co.: Pb= 10.7 +/- 3.4 ppm Camden Co.: Pb= 30.8 +/- 9.6 ppm Prowers Co.: Pb= 27.3 +/- 3.2 ppm Bent Co.: Pb= 23.2 +/- 3.7 ppm Otero Co.: Pb= 26.8 +/- 4.4 ppm Finney Co.: Pb= 21.5 +/- 2.8 ppm Custer Co.: Pb= 37.1 +/- 8.8 ppm Kearny Co.: Pb= 21.1 +/- 1.3 ppm Hamilton Co.: Pb= 20.4 +/- 2.0 ppm Hodgeman Co.: Pb= 21.0 +/- 3.0 ppm Stafford Co.: Pb= 21.9 +/- 2.9 ppm St. Clair Co.: Pb= 14.5 +/- 4.0 ppm Crawford Co.: Pb= 67.2 +/- 73.3 ppm Washington Co.: Pb= 159.1 +/- 122.0 ppm Harvey Co.: Pb= 22.6 +/- 2.6 ppm Reno Co.: Pb= 19.8 +/- 4.5 ppm Greenwood Co.: Pb= 27.8 +/- 4.8 ppm Phelps Co.: Pb= 16.8 +/- 5.1 ppm Hinsdale Co.: Pb= 270.0 +/- 506.3 ppm Edwards Co.: Pb= 23.9 +/- 2.2 ppm Butler Co.: Pb= 26.4 +/- 4.0 ppm St. Francois Co.: Pb= 193.0 +/- 173.3 pp Hickory Co.: Pb= 20.6 +/- 3.1 ppm Vernon Co.: Pb= 18.5 +/- 5.4 ppm Woodson Co.: Pb= 27.3 +/- 3.6 ppm Allen Co.: Pb= 27.1 +/- 4.3 ppm Bourbon Co.: Pb= 26.5 +/- 3.2 ppm Pulaski Co.: Pb= 16.3 +/- 7.3 ppm Huerfano Co.: Pb= 31.0 +/- 4.0 ppm Gray Co.: Pb= 25.7 +/- 4.7 ppm Mineral Co.: Pb= 34.1 +/- 8.7 ppm San Juan Co.: Pb= 1123.1 +/- 1405.5 ppm Ford Co.: Pb= 23.2 +/- 2.4 ppm Sedgwick Co.: Pb= 24.1 +/- 5.0 ppm Dallas Co.: Pb= 36.3 +/- 8.3 ppm Cedar Co.: Pb= 77.0 +/- 144.9 ppm Laclede Co.: Pb= 23.2 +/- 6.8 ppm Rio Grande Co.: Pb= 30.9 +/- 11.4 ppm Polk Co.: Pb= 82.7 +/- 167.7 ppm Pratt Co.: Pb= 28.6 +/- 3.0 ppm Las Animas Co.: Pb= 28.4 +/- 5.6 ppm Dent Co.: Pb= 18.3 +/- 11.7 ppm Alamosa Co.: Pb= 49.2 +/- 21.5 ppm Iron Co.: Pb= 43.0 +/- 20.6 ppm Stanton Co.: Pb= 20.0 +/- 1.8 ppm Haskell Co.: Pb= 20.9 +/- 1.4 ppm Grant Co.: Pb= 21.4 +/- 0.9 ppm Kiowa Co.: Pb= 22.8 +/- 2.8 ppm Wilson Co.: Pb= 26.4 +/- 3.7 ppm Neosho Co.: Pb= 28.4 +/- 3.3 ppm Kingman Co.: Pb= 22.8 +/- 2.4 ppm Crawford Co.: Pb= 36.8 +/- 7.0 ppm Costilla Co.: Pb= 29.5 +/- 3.1 ppm Barton Co.: Pb= 23.7 +/- 6.2 ppm Baca Co.: Pb= 23.7 +/- 3.1 ppm La Plata Co.: Pb= 32.6 +/- 14.0 ppm Elk Co.: Pb= 29.5 +/- 10.3 ppm Texas Co.: Pb= 18.9 +/- 3.4 ppm Reynolds Co.: Pb= 22.0 +/- 11.5 ppm Dade Co.: Pb= 616.9 +/- 728.6 ppm Webster Co.: Pb= 26.6 +/- 6.0 ppm Wright Co.: Pb= 26.5 +/- 7.1 ppm Sumner Co.: Pb= 23.5 +/- 4.6 ppm Cowley Co.: Pb= 27.4 +/- 3.2 ppm Meade Co.: Pb= 21.0 +/- 1.5 ppm Clark Co.: Pb= 23.2 +/- 2.3 ppm Barber Co.: Pb= 22.4 +/- 3.5 ppm Greene Co.: Pb= 61.5 +/- 100.7 ppm Archuleta Co.: Pb= 26.1 +/- 3.5 ppm Shannon Co.: Pb= 21.9 +/- 2.5 ppm Conejos Co.: Pb= 26.8 +/- 4.6 ppm Morton Co.: Pb= 18.7 +/- 1.6 ppm Stevens Co.: Pb= 21.0 +/- 1.5 ppm Seward Co.: Pb= 21.2 +/- 2.1 ppm Montgomery Co.: Pb= 23.2 +/- 6.0 ppm Harper Co.: Pb= 19.1 +/- 1.2 ppm Labette Co.: Pb= 30.9 +/- 5.9 ppm Comanche Co.: Pb= 20.8 +/- 2.2 ppm Jasper Co.: Pb= 72.7 +/- 77.1 ppm Cherokee Co.: Pb= 43.1 +/- 23.1 ppm Wayne Co.: Pb= 39.2 +/- 56.5 ppm Chautauqua Co.: Pb= 25.2 +/- 7.6 ppm Lawrence Co.: Pb= 26.9 +/- 24.5 ppm Carter Co.: Pb= 113.0 +/- 175.8 ppm Christian Co.: Pb= 28.4 +/- 7.9 ppm Douglas Co.: Pb= 27.0 +/- 6.7 ppm Newton Co.: Pb= 194.6 +/- 155.4 ppm Howell Co.: Pb= 33.1 +/- 10.7 ppm Beaver Co.: Pb= 18.3 +/- 0.9 ppm Harper Co.: Pb= 21.2 +/- 1.5 ppm Cimarron Co.: Pb= 19.9 +/- 2.5 ppm Union Co.: Pb= 21.5 +/- 4.2 ppm Woods Co.: Pb= 22.6 +/- 2.0 ppm Rio Arriba Co.: Pb= 22.4 +/- 6.8 ppm San Juan Co.: Pb= 35.1 +/- 45.2 ppm Craig Co.: Pb= 33.2 +/- 13.2 ppm Ottawa Co.: Pb= 60.5 +/- 33.7 ppm Osage Co.: Pb= 19.8 +/- 7.4 ppm Nowata Co.: Pb= 21.8 +/- 3.5 ppm Washington Co.: Pb= 16.6 +/- 4.7 ppm Kay Co.: Pb= 25.2 +/- 4.7 ppm Grant Co.: Pb= 20.8 +/- 3.2 ppm Alfalfa Co.: Pb= 19.1 +/- 1.2 ppm Texas Co.: Pb= 17.2 +/- 0.7 ppm Colfax Co.: Pb= 25.6 +/- 6.6 ppm Taos Co.: Pb= 33.3 +/- 17.1 ppm Stone Co.: Pb= 20.2 +/- 2.6 ppm Barry Co.: Pb= 24.5 +/- 3.0 ppm Butler Co.: Pb= 36.8 +/- 43.5 ppm Oregon Co.: Pb= 26.2 +/- 6.1 ppm Ripley Co.: Pb= 32.6 +/- 26.6 ppm Woodward Co. Taney Co.: Pb= 34.8 +/- 14.4 ppm Ozark Co.: Pb= 30.9 +/- 9.7 ppm McDonald Co.: Pb= 27.1 +/- 14.5 ppm Delaware Co.: Pb= 25.8 +/- 4.9 ppm Noble Co.: Pb= 18.5 +/- 5.5 ppm Rogers Co.: Pb= 20.9 +/- 2.2 ppm Garfield Co.: Pb= 18.1 +/- 6.1 ppm Ellis Co.: Pb= 18.7 +/- 2.4 ppm Pawnee Co.: Pb= 13.4 +/- 2.1 ppm Mayes Co.: Pb= 22.4 +/- 4.9 ppm Major Co. Dallam Co.: Pb= 19.6 +/- 2.0 ppm Sherman Co.: Pb= 20.8 +/- 2.5 ppm Lipscomb Co. Ochiltree Co. Hansford Co. Benton Co.: Pb= 26.1 +/- 5.3 ppm Fulton Co.: Pb= 25.2 +/- 6.4 ppm Carroll Co.: Pb= 18.8 +/- 3.9 ppm Baxter Co.: Pb= 28.1 +/- 13.2 ppm Randolph Co.: Pb= 19.6 +/- 4.7 ppm Clay Co.: Pb= 24.4 +/- 7.1 ppm Marion Co.: Pb= 35.0 +/- 17.2 ppm Boone Co.: Pb= 38.0 +/- 27.7 ppm Sharp Co.: Pb= 21.2 +/- 8.5 ppm Tulsa Co.: Pb= 20.8 +/- 6.5 ppm Madison Co.: Pb= 19.8 +/- 3.3 ppm Greene Co.: Pb= 22.4 +/- 5.1 ppm Mora Co.: Pb= 20.8 +/- 1.8 ppm Izard Co.: Pb= 15.5 +/- 8.0 ppm Lawrence Co.: Pb= 20.3 +/- 4.8 ppm Payne Co.: Pb= 13.7 +/- 3.6 ppm Washington Co.: Pb= 22.9 +/- 5.0 ppm Sandoval Co.: Pb= 22.5 +/- 3.3 ppm Harding Co.: Pb= 19.0 +/- 3.1 ppm Blaine Co.: Pb= 22.2 +/- 4.7 ppm Kingfisher Co.: Pb= 23.7 +/- 4.3 ppm Dewey Co.: Pb= 25.7 +/- 3.8 ppm Logan Co.: Pb= 13.4 +/- 2.8 ppm Creek Co.: Pb= 10.6 +/- 2.5 ppm Wagoner Co.: Pb= 18.3 +/- 2.5 ppm Cherokee Co.: Pb= 25.0 +/- 3.3 ppm Adair Co.: Pb= 23.2 +/- 3.9 ppm Stone Co.: Pb= 13.4 +/- 5.0 ppm Newton Co.: Pb= 13.6 +/- 3.0 ppm Searcy Co.: Pb= 15.9 +/- 9.1 ppm Roberts Co.: Pb= 16.6 +/- 1.8 ppm Hemphill Co.: Pb= 17.5 +/- 1.5 ppm Hartley Co.: Pb= 19.7 +/- 2.4 ppm Moore Co.: Pb= 16.8 +/- 3.3 ppm Hutchinson Co.: Pb= 16.5 +/- 1.1 ppm Roger Mills Co.: Pb= 23.4 +/- 3.2 ppm Santa Fe Co.: Pb= 48.2 +/- 39.1 ppm Craighead Co.: Pb= 17.0 +/- 2.1 ppm Los Alamos Co.: Pb= 26.9 +/- 3.3 ppm Independence Co.: Pb= 14.2 +/- 4.6 ppm Jackson Co.: Pb= 14.8 +/- 2.4 ppm San Miguel Co.: Pb= 24.0 +/- 15.4 ppm

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