Interactive tool · County environmental burden
Environmental Justice Screening
County-level screening based on EPA data. It combines toxic releases, health-based SDWIS records, Superfund sites, and TRI carcinogen reporting into a composite across more than 3,000 US counties. It is a prioritization proxy, not a measured health-risk verdict. See our methodology.
Toxic Releases
35%
weight
Water Quality
25%
weight
Superfund Sites
20%
weight
Carcinogens
20%
weight
How the 500 highest-activity counties break down
These are the most data-dense counties nationwide, so most land in the Elevated band. The screening exists to surface the smaller group that reaches High burden, start there.
A 0 Low burden
B 130 Moderate
C 246 Elevated
D 110 High
F 14 Very high
Counties with the highest composite environmental burden
Top 15 by overall burden score, full ranking and per-state filter below
- Calhoun, TX
Calhoun, TX
92 burden score
- Gila, AZ
Gila, AZ
88 burden score
- Iberville Parish, LA
Iberville Parish, LA
87 burden score
- Union, AR
Union, AR
85 burden score
- Grant, NM
Grant, NM
85 burden score
- Orange, TX
Orange, TX
84 burden score
- Lee, IA
Lee, IA
83 burden score
- Fairbanks North…, AK
Fairbanks North Star Borough, AK
82 burden score
- Harrison, WV
Harrison, WV
82 burden score
- Beaufort, NC
Beaufort, NC
82 burden score
- Jasper, TX
Jasper, TX
82 burden score
- Clear Creek, CO
Clear Creek, CO
80 burden score
- Washington Pari…, LA
Washington Parish, LA
80 burden score
- Adams, NE
Adams, NE
80 burden score
- Harrison, TX
Harrison, TX
79 burden score
What this shows The score is a composite percentile across four EPA-derived indicators (releases, health-based SDWIS records, Superfund-site count, carcinogen-facility ratio), a screening proxy to prioritize where to look, not a measured health-risk verdict. The SDWIS input excludes monitoring and reporting violations.
| # | County | State | Score | Grade |
|---|---|---|---|---|
| 1 | Calhoun (19,921) | TX | 92 | F |
| 2 | Gila (53,610) | AZ | 88 | F |
| 3 | Iberville Parish (29,950) | LA | 87 | F |
| 4 | Union (38,368) | AR | 85 | F |
| 5 | Grant (27,856) | NM | 85 | F |
| 6 | Orange (84,993) | TX | 84 | F |
| 7 | Lee (33,175) | IA | 83 | F |
| 8 | Fairbanks North Star Borough (95,555) | AK | 82 | F |
| 9 | Harrison (65,407) | WV | 82 | F |
| 10 | Beaufort (44,597) | NC | 82 | F |
| 11 | Jasper (32,807) | TX | 82 | F |
| 12 | Clear Creek (9,358) | CO | 80 | F |
| 13 | Washington Parish (45,238) | LA | 80 | F |
| 14 | Adams (31,034) | NE | 80 | F |
| 15 | Harrison (69,584) | TX | 79 | D |
| 16 | Major (7,656) | OK | 79 | D |
| 17 | Desha (11,041) | AR | 79 | D |
| 18 | Ellsworth (6,366) | KS | 79 | D |
| 19 | Northwest Arctic Borough (7,611) | AK | 78 | D |
| 20 | Shoshone (13,580) | ID | 78 | D |
| 21 | Caribou (7,118) | ID | 78 | D |
| 22 | Crane (4,623) | TX | 77 | D |
| 23 | Mason (25,214) | WV | 77 | D |
| 24 | Jackson Parish (14,939) | LA | 77 | D |
| 25 | Jefferson (253,939) | TX | 76 | D |
| 26 | Apache (65,680) | AZ | 76 | D |
| 27 | Little River (11,959) | AR | 76 | D |
| 28 | Lake (7,411) | CO | 76 | D |
| 29 | Taylor (21,422) | FL | 76 | D |
| 30 | Ashtabula (97,343) | OH | 75 | D |
| 31 | Ford (34,133) | KS | 75 | D |
| 32 | Choctaw (12,525) | AL | 75 | D |
| 33 | Linn (9,723) | KS | 75 | D |
| 34 | Lea (73,154) | NM | 74 | D |
| 35 | Tooele (76,648) | UT | 74 | D |
| 36 | Guayama Municipio (35,845) | PR | 74 | D |
| 37 | Silver Bow (35,589) | MT | 73 | D |
| 38 | Brazoria (381,650) | TX | 73 | D |
| 39 | Ascension Parish (128,593) | LA | 73 | D |
| 40 | Rosebud (8,236) | MT | 73 | D |
| 41 | Ohio (23,704) | KY | 73 | D |
| 42 | Millard (13,179) | UT | 73 | D |
| 43 | Kleberg (30,629) | TX | 72 | D |
| 44 | Buchanan (19,857) | VA | 72 | D |
| 45 | Hancock (9,032) | KY | 72 | D |
| 46 | Wilcox (10,347) | AL | 72 | D |
| 47 | Montgomery (31,143) | KS | 72 | D |
| 48 | Marshall (30,129) | WV | 72 | D |
| 49 | Calcasieu Parish (208,668) | LA | 71 | D |
| 50 | Greenlee (9,452) | AZ | 70 | D |
| 51 | Posey (25,163) | IN | 70 | D |
| 52 | St. James Parish (19,797) | LA | 70 | D |
| 53 | Limestone (22,185) | TX | 70 | D |
| 54 | Brooke (22,053) | WV | 70 | D |
| 55 | Iron (9,482) | MO | 69 | D+ |
| 56 | Plaquemines Parish (23,070) | LA | 69 | D+ |
| 57 | De Soto Parish (26,897) | LA | 69 | D+ |
| 58 | Perry (11,459) | MS | 69 | D+ |
| 59 | Emery (9,968) | UT | 69 | D+ |
| 60 | Cape Girardeau (82,180) | MO | 69 | D+ |
| 61 | Clarke (22,802) | AL | 69 | D+ |
| 62 | Routt (24,990) | CO | 69 | D+ |
| 63 | Eddy (61,114) | NM | 68 | D+ |
| 64 | San Juan (121,178) | NM | 68 | D+ |
| 65 | Nueces (352,829) | TX | 67 | D+ |
| 66 | Mccurtain (30,825) | OK | 67 | D+ |
| 67 | Cass (28,582) | TX | 67 | D+ |
| 68 | Platte (8,606) | WY | 67 | D+ |
| 69 | Aroostook (67,227) | ME | 67 | D+ |
| 70 | New Madrid (16,041) | MO | 67 | D+ |
| 71 | Moffat (13,258) | CO | 67 | D+ |
| 72 | Salt Lake (1,184,689) | UT | 66 | D+ |
| 73 | Lander (5,745) | NV | 66 | D+ |
| 74 | Churchill (25,614) | NV | 66 | D+ |
| 75 | Beauregard Parish (36,646) | LA | 66 | D+ |
| 76 | Butler (12,373) | KY | 66 | D+ |
| 77 | Vermilion (73,179) | IL | 65 | D+ |
| 78 | Marshall (31,728) | KY | 65 | D+ |
| 79 | St. John The Baptist Parish (41,342) | LA | 65 | D+ |
| 80 | Nez Perce (42,477) | ID | 65 | D+ |
| 81 | Carbon (65,191) | PA | 65 | D+ |
| 82 | Harrison (209,443) | MS | 64 | D+ |
| 83 | Galveston (354,721) | TX | 64 | D+ |
| 84 | Columbia (53,178) | OR | 64 | D+ |
| 85 | Laramie (100,661) | WY | 64 | D+ |
| 86 | Decatur (29,118) | GA | 64 | D+ |
| 87 | Kay (43,731) | OK | 64 | D+ |
| 88 | Otoe (16,075) | NE | 64 | D+ |
| 89 | Elko (53,852) | NV | 63 | D+ |
| 90 | Juneau City And Borough (31,969) | AK | 63 | D+ |
| 91 | Ouachita Parish (158,916) | LA | 63 | D+ |
| 92 | Coshocton (36,679) | OH | 63 | D+ |
| 93 | Smith (20,196) | TN | 63 | D+ |
| 94 | Mayes (39,406) | OK | 63 | D+ |
| 95 | Sweetwater (41,786) | WY | 63 | D+ |
| 96 | Washington (59,318) | OH | 63 | D+ |
| 97 | Mclean (9,807) | ND | 63 | D+ |
| 98 | Kosciusko (80,357) | IN | 63 | D+ |
| 99 | Armstrong (65,069) | PA | 63 | D+ |
| 100 | Kimball (3,348) | NE | 63 | D+ |
| 101 | Columbia (22,527) | AR | 63 | D+ |
| 102 | Monongalia (106,520) | WV | 62 | D+ |
| 103 | Woodward (20,260) | OK | 62 | D+ |
| 104 | Ballard (7,678) | KY | 62 | D+ |
| 105 | Grand (15,794) | CO | 62 | D+ |
| 106 | Jasper (9,233) | IL | 62 | D+ |
| 107 | Mobile (413,162) | AL | 61 | D+ |
| 108 | Yavapai (241,656) | AZ | 61 | D+ |
| 109 | Warrick (64,650) | IN | 61 | D+ |
| 110 | Pottawatomie (25,808) | KS | 61 | D+ |
| 111 | Owyhee (12,284) | ID | 61 | D+ |
| 112 | Lawrence (26,574) | SD | 61 | D+ |
| 113 | Uintah (36,458) | UT | 61 | D+ |
| 114 | Humphreys (19,074) | TN | 60 | D+ |
| 115 | Kern (910,433) | CA | 60 | D+ |
| 116 | Garfield (62,322) | OK | 60 | D+ |
| 117 | Rogers (97,235) | OK | 60 | D+ |
| 118 | Victoria (91,281) | TX | 60 | D+ |
| 119 | Lowndes (58,187) | MS | 60 | D+ |
| 120 | Moore (21,234) | TX | 60 | D+ |
| 121 | Randolph (24,524) | MO | 60 | D+ |
| 122 | Lincoln (50,632) | OR | 60 | D+ |
| 123 | Roane (54,403) | TN | 60 | D+ |
| 124 | Clark (21,378) | AR | 60 | D+ |
| 125 | Monroe (33,928) | MS | 59 | C |
| 126 | Mercer (8,341) | ND | 59 | C |
| 127 | Carroll (10,878) | KY | 59 | C |
| 128 | Rutherford (64,850) | NC | 59 | C |
| 129 | Marquette (66,430) | MI | 59 | C |
| 130 | Hutchinson (20,413) | TX | 59 | C |
| 131 | Lowndes (119,055) | GA | 59 | C |
| 132 | Dawson (24,020) | NE | 59 | C |
| 133 | Jackson (144,437) | MS | 59 | C |
| 134 | Putnam (74,235) | FL | 59 | C |
| 135 | Trimble (8,531) | KY | 59 | C |
| 136 | Graham (38,860) | AZ | 59 | C |
| 137 | St. Mary Parish (48,455) | LA | 59 | C |
| 138 | Escambia (323,275) | FL | 58 | C |
| 139 | Mckenzie (14,280) | ND | 58 | C |
| 140 | Monroe (19,580) | AL | 58 | C |
| 141 | Wayne (30,519) | GA | 58 | C |
| 142 | Marathon (138,067) | WI | 58 | C |
| 143 | Columbus (50,453) | NC | 58 | C |
| 144 | Indiana (83,213) | PA | 58 | C |
| 145 | Warren (43,623) | MS | 58 | C |
| 146 | Person (39,275) | NC | 58 | C |
| 147 | Oxford (58,728) | ME | 58 | C |
| 148 | Rusk (52,613) | TX | 58 | C |
| 149 | Hempstead (19,778) | AR | 58 | C |
| 150 | Lawrence (11,883) | MS | 58 | C |
| 151 | Nye (53,207) | NV | 57 | C |
| 152 | Gibson (32,986) | IN | 57 | C |
| 153 | New Hanover (231,214) | NC | 57 | C |
| 154 | Gilliam (2,002) | OR | 57 | C |
| 155 | Schuylkill (143,259) | PA | 57 | C |
| 156 | Covington (city) (5,671) | VA | 57 | C |
| 157 | Cambria (132,355) | PA | 57 | C |
| 158 | Jasper (33,198) | IN | 57 | C |
| 159 | Columbia (58,322) | WI | 57 | C |
| 160 | Marlboro (26,285) | SC | 57 | C |
| 161 | Monroe (47,054) | TN | 57 | C |
| 162 | Adams (65,166) | IL | 57 | C |
| 163 | Hamilton (13,445) | FL | 57 | C |
| 164 | Lake (498,990) | IN | 56 | C |
| 165 | Cassia (25,165) | ID | 56 | C |
| 166 | Power (8,018) | ID | 56 | C |
| 167 | Stewart (13,859) | TN | 56 | C |
| 168 | Macon (102,591) | IL | 56 | C |
| 169 | Putnam (57,250) | WV | 56 | C |
| 170 | Isle Of Wight (39,444) | VA | 56 | C |
| 171 | Brunswick (145,889) | NC | 56 | C |
| 172 | Converse (13,759) | WY | 56 | C |
| 173 | Natchitoches Parish (37,047) | LA | 56 | C |
| 174 | Macon (11,953) | GA | 56 | C |
| 175 | Onslow (208,537) | NC | 56 | C |
| 176 | Webb (267,731) | TX | 56 | C |
| 177 | Eureka (1,660) | NV | 55 | C |
| 178 | Humboldt (17,299) | NV | 55 | C |
| 179 | Allegheny (1,240,476) | PA | 55 | C |
| 180 | Mississippi (39,749) | AR | 55 | C |
| 181 | Minnehaha (200,689) | SD | 55 | C |
| 182 | Pueblo (168,726) | CO | 55 | C |
| 183 | Chambers (49,178) | TX | 55 | C |
| 184 | Colfax (10,541) | NE | 55 | C |
| 185 | Allen (101,685) | OH | 54 | C |
| 186 | Pershing (6,505) | NV | 54 | C |
| 187 | Teller (24,774) | CO | 54 | C |
| 188 | Bladen (29,591) | NC | 54 | C |
| 189 | King William (18,232) | VA | 54 | C |
| 190 | Dekalb (43,584) | IN | 54 | C |
| 191 | Osage (45,963) | OK | 54 | C |
| 192 | Lincoln (34,122) | NE | 54 | C |
| 193 | Sumter (12,020) | AL | 53 | C |
| 194 | Jefferson (64,855) | OH | 53 | C |
| 195 | Benton (210,224) | WA | 53 | C |
| 196 | York (459,312) | PA | 53 | C |
| 197 | Cass (37,703) | IN | 53 | C |
| 198 | Shawnee (178,315) | KS | 53 | C |
| 199 | West Baton Rouge Parish (27,666) | LA | 53 | C |
| 200 | Halifax (48,219) | NC | 53 | C |
| 201 | Bay (181,368) | FL | 53 | C |
| 202 | Craven (101,074) | NC | 53 | C |
| 203 | Montgomery (227,957) | TN | 52 | C |
| 204 | Hawkins (57,446) | TN | 52 | C |
| 205 | Jackson (46,319) | IN | 52 | C |
| 206 | Campbell (47,018) | WY | 52 | C |
| 207 | Elkhart (206,868) | IN | 52 | C |
| 208 | Butler (195,870) | PA | 52 | C |
| 209 | Morgan (29,186) | CO | 52 | C |
| 210 | Orange (403,840) | NY | 52 | C |
| 211 | Blue Earth (69,386) | MN | 52 | C |
| 212 | Conway (20,872) | AR | 52 | C |
| 213 | Martin (21,773) | NC | 52 | C |
| 214 | Brookings (34,968) | SD | 52 | C |
| 215 | Wapello (35,265) | IA | 52 | C |
| 216 | Hartford | CT | 52 | C |
| 217 | Sebastian (128,448) | AR | 52 | C |
| 218 | Gallia (29,162) | OH | 51 | C |
| 219 | Monroe (155,001) | MI | 51 | C |
| 220 | Haywood (62,432) | NC | 51 | C |
| 221 | Minidoka (21,922) | ID | 51 | C |
| 222 | Ponce Municipio (134,676) | PR | 51 | C |
| 223 | Marengo (19,027) | AL | 51 | C |
| 224 | Jo Daviess (21,918) | IL | 51 | C |
| 225 | Grant (10,972) | WV | 51 | C |
| 226 | Calhoun (116,141) | AL | 51 | C |
| 227 | Ottawa (40,161) | OH | 51 | C |
| 228 | Bradford (59,971) | PA | 51 | C |
| 229 | Venango (50,096) | PA | 51 | C |
| 230 | Knox (36,108) | IN | 51 | C |
| 231 | St. Charles Parish (51,863) | LA | 50 | C |
| 232 | Jefferson Parish (432,484) | LA | 50 | C |
| 233 | Washington (13,682) | IL | 50 | C |
| 234 | Woodbury (105,760) | IA | 50 | C |
| 235 | Georgetown (64,200) | SC | 50 | C |
| 236 | Linn (129,794) | OR | 50 | C |
| 237 | Waupaca (51,714) | WI | 50 | C |
| 238 | Mccracken (67,584) | KY | 50 | C |
| 239 | Franklin (105,316) | MO | 50 | C |
| 240 | Saline (14,642) | NE | 50 | C |
| 241 | Vermillion (15,452) | IN | 50 | C |
| 242 | Union (65,293) | OH | 50 | C |
| 243 | Hancock (74,885) | OH | 50 | C |
| 244 | Allamakee (14,038) | IA | 50 | C |
| 245 | Whatcom (228,432) | WA | 50 | C |
| 246 | Harris (4,758,579) | TX | 49 | C+ |
| 247 | White Pine (8,856) | NV | 49 | C+ |
| 248 | Montgomery (99,159) | VA | 49 | C+ |
| 249 | Madison (264,631) | IL | 49 | C+ |
| 250 | Clinton (46,383) | IA | 49 | C+ |
| 251 | Middlesex (861,535) | NJ | 49 | C+ |
| 252 | Muscatine (42,735) | IA | 49 | C+ |
| 253 | Hardin (26,939) | TN | 49 | C+ |
| 254 | Atascosa (50,058) | TX | 49 | C+ |
| 255 | Mason (16,995) | KY | 49 | C+ |
| 256 | Hertford (20,492) | NC | 49 | C+ |
| 257 | Camp (12,652) | TX | 49 | C+ |
| 258 | Montgomery (38,155) | IN | 49 | C+ |
| 259 | Wood (83,829) | WV | 49 | C+ |
| 260 | Hendry (40,798) | FL | 49 | C+ |
| 261 | Kankakee (106,833) | IL | 49 | C+ |
| 262 | Webster (36,848) | IA | 49 | C+ |
| 263 | Berks (429,989) | PA | 48 | C+ |
| 264 | Muskegon (175,378) | MI | 48 | C+ |
| 265 | Tulsa (673,708) | OK | 48 | C+ |
| 266 | Box Elder (59,725) | UT | 48 | C+ |
| 267 | Clay (255,566) | MO | 48 | C+ |
| 268 | Ellis (203,927) | TX | 48 | C+ |
| 269 | Independence (38,120) | AR | 48 | C+ |
| 270 | Dutchess (297,144) | NY | 48 | C+ |
| 271 | East Baton Rouge Parish (452,821) | LA | 47 | C+ |
| 272 | Sherburne (99,178) | MN | 47 | C+ |
| 273 | Loudon (56,996) | TN | 47 | C+ |
| 274 | Lawrence (85,423) | PA | 47 | C+ |
| 275 | Pleasants (7,572) | WV | 47 | C+ |
| 276 | Marshall (39,971) | IA | 47 | C+ |
| 277 | Pend Oreille (13,811) | WA | 47 | C+ |
| 278 | Beaver (166,993) | PA | 47 | C+ |
| 279 | Sheboygan (117,783) | WI | 47 | C+ |
| 280 | Manitowoc (81,314) | WI | 47 | C+ |
| 281 | Midland (83,641) | MI | 47 | C+ |
| 282 | Spencer (19,871) | IN | 46 | C+ |
| 283 | Southeast Fairbanks Censu | AK | 46 | C+ |
| 284 | Richmond (206,040) | GA | 46 | C+ |
| 285 | Perry (19,218) | IN | 46 | C+ |
| 286 | Florence (136,921) | SC | 46 | C+ |
| 287 | Pike (32,953) | AL | 46 | C+ |
| 288 | Yazoo (26,837) | MS | 46 | C+ |
| 289 | Cowley (34,487) | KS | 46 | C+ |
| 290 | Sullivan (20,766) | IN | 46 | C+ |
| 291 | Gooding (15,740) | ID | 46 | C+ |
| 292 | Darlington (62,754) | SC | 46 | C+ |
| 293 | Delaware (112,109) | IN | 46 | C+ |
| 294 | New Castle (573,030) | DE | 45 | C+ |
| 295 | Jefferson (65,780) | AR | 45 | C+ |
| 296 | Montgomery (654,722) | TX | 45 | C+ |
| 297 | Jefferson (55,835) | TN | 45 | C+ |
| 298 | St. Lawrence (107,796) | NY | 45 | C+ |
| 299 | Madison (98,845) | TN | 45 | C+ |
| 300 | Jefferson (33,074) | IN | 45 | C+ |
| 301 | Marshall (46,225) | IN | 45 | C+ |
| 302 | Jefferson (228,227) | MO | 45 | C+ |
| 303 | Dallas (37,536) | AL | 45 | C+ |
| 304 | Sandusky (58,770) | OH | 44 | C+ |
| 305 | Union (572,549) | NJ | 44 | C+ |
| 306 | Kings (152,830) | CA | 44 | C+ |
| 307 | York (288,559) | SC | 44 | C+ |
| 308 | Onondaga (471,611) | NY | 44 | C+ |
| 309 | Wood (131,795) | OH | 44 | C+ |
| 310 | Pinal (449,219) | AZ | 44 | C+ |
| 311 | Monroe (7,546) | IA | 44 | C+ |
| 312 | Liberty (66,826) | GA | 44 | C+ |
| 313 | Warren (65,560) | NY | 44 | C+ |
| 314 | Caddo Parish (232,973) | LA | 44 | C+ |
| 315 | Daviess (103,195) | KY | 44 | C+ |
| 316 | Covington (18,226) | MS | 44 | C+ |
| 317 | Walla Walla (62,102) | WA | 44 | C+ |
| 318 | Huron (31,258) | MI | 44 | C+ |
| 319 | Noble (47,417) | IN | 44 | C+ |
| 320 | Reynolds (6,058) | MO | 43 | C+ |
| 321 | Hopewell (city) (22,944) | VA | 43 | C+ |
| 322 | Bertie (17,482) | NC | 43 | C+ |
| 323 | Russell (58,858) | AL | 43 | C+ |
| 324 | Dakota (442,204) | MN | 43 | C+ |
| 325 | Mclennan (263,608) | TX | 43 | C+ |
| 326 | Honolulu (1,003,666) | HI | 43 | C+ |
| 327 | Lorain (314,588) | OH | 43 | C+ |
| 328 | Pettis (43,205) | MO | 43 | C+ |
| 329 | Jones (66,839) | MS | 43 | C+ |
| 330 | St. Charles (409,830) | MO | 43 | C+ |
| 331 | Rankin (158,218) | MS | 43 | C+ |
| 332 | Saratoga (237,075) | NY | 43 | C+ |
| 333 | Pima (1,049,947) | AZ | 42 | C+ |
| 334 | Jefferson (669,744) | AL | 42 | C+ |
| 335 | Robertson (16,973) | TX | 42 | C+ |
| 336 | Richland (418,725) | SC | 42 | C+ |
| 337 | Allegan (120,913) | MI | 42 | C+ |
| 338 | Somerset (50,852) | ME | 42 | C+ |
| 339 | Early (10,683) | GA | 42 | C+ |
| 340 | Choctaw (8,172) | MS | 42 | C+ |
| 341 | Kitsap (276,581) | WA | 42 | C+ |
| 342 | Lasalle (109,049) | IL | 42 | C+ |
| 343 | Garland (100,062) | AR | 42 | C+ |
| 344 | Winnebago (171,357) | WI | 42 | C+ |
| 345 | Carlton (36,457) | MN | 42 | C+ |
| 346 | Ingham (282,015) | MI | 42 | C+ |
| 347 | Contra Costa (1,161,458) | CA | 41 | C+ |
| 348 | Itasca (45,141) | MN | 41 | C+ |
| 349 | Coffee (54,231) | AL | 41 | C+ |
| 350 | Multnomah (803,863) | OR | 41 | C+ |
| 351 | Hampden (462,853) | MA | 41 | C+ |
| 352 | Platte (108,751) | MO | 41 | C+ |
| 353 | Colbert (57,648) | AL | 41 | C+ |
| 354 | Bay (103,235) | MI | 41 | C+ |
| 355 | Manistee (25,247) | MI | 41 | C+ |
| 356 | Wayne (1,773,767) | MI | 40 | C+ |
| 357 | Marion (971,822) | IN | 40 | C+ |
| 358 | Oliver (1,821) | ND | 40 | C+ |
| 359 | Portage (70,375) | WI | 40 | C+ |
| 360 | Cass (12,826) | IL | 40 | C+ |
| 361 | Greene (301,121) | MO | 40 | C+ |
| 362 | Titus (31,284) | TX | 40 | C+ |
| 363 | Marion (65,145) | OH | 40 | C+ |
| 364 | Glynn (84,987) | GA | 40 | C+ |
| 365 | Tulare (475,774) | CA | 40 | C+ |
| 366 | Spartanburg (338,096) | SC | 40 | C+ |
| 367 | Hudson (710,478) | NJ | 40 | C+ |
| 368 | Gloucester (304,504) | NJ | 40 | C+ |
| 369 | Sacramento (1,584,047) | CA | 40 | C+ |
| 370 | Aiken (171,949) | SC | 40 | C+ |
| 371 | Dorchester (32,612) | MD | 39 | B |
| 372 | Louisa (10,710) | IA | 39 | B |
| 373 | Lancaster (323,673) | NE | 39 | B |
| 374 | Nassau (94,653) | FL | 39 | B |
| 375 | Wood (74,039) | WI | 39 | B |
| 376 | Shelby (45,104) | IN | 39 | B |
| 377 | Ozaukee (92,345) | WI | 39 | B |
| 378 | Canyon (242,405) | ID | 39 | B |
| 379 | Pike (39,930) | MS | 39 | B |
| 380 | Lane (382,628) | OR | 39 | B |
| 381 | Solano (450,824) | CA | 39 | B |
| 382 | St. Clair (254,777) | IL | 39 | B |
| 383 | Orangeburg (83,531) | SC | 38 | B |
| 384 | Tuscaloosa (234,036) | AL | 38 | B |
| 385 | Madison (94,064) | KY | 38 | B |
| 386 | Allen (388,791) | IN | 38 | B |
| 387 | Tippecanoe (187,399) | IN | 38 | B |
| 388 | Bibb (156,543) | GA | 38 | B |
| 389 | San Bernardino (2,187,816) | CA | 38 | B |
| 390 | Montgomery (861,225) | PA | 38 | B |
| 391 | Sussex (247,799) | DE | 38 | B |
| 392 | San Diego (3,282,782) | CA | 38 | B |
| 393 | Rockingham (91,585) | NC | 38 | B |
| 394 | Hanover (111,652) | VA | 38 | B |
| 395 | Westmoreland (353,345) | PA | 37 | B |
| 396 | Stark (373,764) | OH | 37 | B |
| 397 | Linn (229,463) | IA | 37 | B |
| 398 | Whiteside (55,192) | IL | 37 | B |
| 399 | Alameda (1,651,949) | CA | 37 | B |
| 400 | Lancaster (555,151) | PA | 37 | B |
| 401 | Tuscarawas (92,585) | OH | 37 | B |
| 402 | Talladega (81,170) | AL | 37 | B |
| 403 | Anne Arundel (590,936) | MD | 37 | B |
| 404 | Cumberland (336,749) | NC | 37 | B |
| 405 | Trumbull (201,367) | OH | 37 | B |
| 406 | Buncombe (271,790) | NC | 37 | B |
| 407 | Cuyahoga (1,249,418) | OH | 36 | B |
| 408 | Berkeley (238,723) | SC | 36 | B |
| 409 | Peoria (179,831) | IL | 36 | B |
| 410 | Sullivan (159,693) | TN | 36 | B |
| 411 | Cowlitz (111,539) | WA | 36 | B |
| 412 | Leake (21,288) | MS | 36 | B |
| 413 | Maricopa (4,491,987) | AZ | 36 | B |
| 414 | Mcminn (54,135) | TN | 36 | B |
| 415 | Charleston (414,711) | SC | 36 | B |
| 416 | Adams (524,408) | CO | 36 | B |
| 417 | Dallas (2,603,816) | TX | 36 | B |
| 418 | Niagara (211,341) | NY | 36 | B |
| 419 | Northampton (315,927) | PA | 36 | B |
| 420 | Erie (950,044) | NY | 36 | B |
| 421 | Utah (683,622) | UT | 36 | B |
| 422 | Lake (232,101) | OH | 36 | B |
| 423 | Guadalupe (178,368) | TX | 36 | B |
| 424 | El Paso (866,275) | TX | 36 | B |
| 425 | Madison (397,135) | AL | 35 | B |
| 426 | Polk (760,961) | FL | 35 | B |
| 427 | Hillsborough (1,489,634) | FL | 35 | B |
| 428 | Middlesex (1,622,896) | MA | 35 | B |
| 429 | Warren (110,238) | NJ | 35 | B |
| 430 | Ross (76,748) | OH | 35 | B |
| 431 | Palm Beach (1,507,453) | FL | 35 | B |
| 432 | Los Angeles (9,848,406) | CA | 34 | B |
| 433 | Will (698,450) | IL | 34 | B |
| 434 | Richland (125,138) | OH | 34 | B |
| 435 | Henderson (44,493) | KY | 34 | B |
| 436 | Maury (104,855) | TN | 34 | B |
| 437 | Rutherford (351,591) | TN | 34 | B |
| 438 | Shelby (922,195) | TN | 33 | B |
| 439 | Knox (487,401) | TN | 33 | B |
| 440 | Pottawattamie (93,407) | IA | 33 | B |
| 441 | Escambia (36,695) | AL | 33 | B |
| 442 | Orange (1,440,471) | FL | 33 | B |
| 443 | Lehigh (375,408) | PA | 33 | B |
| 444 | El Paso (736,008) | CO | 33 | B |
| 445 | Johnson (188,820) | TX | 33 | B |
| 446 | Ottawa (298,614) | MI | 32 | B |
| 447 | Duval (1,007,189) | FL | 32 | B |
| 448 | Rock Island (142,995) | IL | 32 | B |
| 449 | Buchanan (83,855) | MO | 32 | B |
| 450 | Weld (340,711) | CO | 32 | B |
| 451 | Tarrant (2,135,743) | TX | 32 | B |
| 452 | Laporte (112,141) | IN | 32 | B |
| 453 | Franklin (1,321,635) | OH | 32 | B |
| 454 | Wyandotte (167,277) | KS | 31 | B |
| 455 | Morgan (123,742) | AL | 31 | B |
| 456 | Hamilton (827,878) | OH | 31 | B |
| 457 | King (2,262,713) | WA | 31 | B |
| 458 | St Louis (city) (293,109) | MO | 31 | B |
| 459 | Cook (5,185,812) | IL | 30 | B |
| 460 | Clark (2,293,764) | NV | 30 | B |
| 461 | Milwaukee (927,656) | WI | 30 | B |
| 462 | Cullman (89,463) | AL | 30 | B |
| 463 | Greenville (537,575) | SC | 30 | B |
| 464 | Porter (174,150) | IN | 29 | B+ |
| 465 | Jefferson (777,392) | KY | 29 | B+ |
| 466 | Laurens (49,619) | GA | 29 | B+ |
| 467 | St. Clair (160,089) | MI | 29 | B+ |
| 468 | Hennepin (1,268,903) | MN | 29 | B+ |
| 469 | Kershaw (66,924) | SC | 29 | B+ |
| 470 | Brown (269,425) | WI | 29 | B+ |
| 471 | Harris (35,509) | GA | 29 | B+ |
| 472 | Lucas (428,748) | OH | 28 | B+ |
| 473 | Sedgwick (524,810) | KS | 28 | B+ |
| 474 | Monroe (754,068) | NY | 28 | B+ |
| 475 | Outagamie (191,537) | WI | 28 | B+ |
| 476 | Washington (272,298) | MN | 28 | B+ |
| 477 | Blount (59,292) | AL | 28 | B+ |
| 478 | Yakima (256,605) | WA | 28 | B+ |
| 479 | Lancaster (100,905) | SC | 27 | B+ |
| 480 | Autauga (59,285) | AL | 27 | B+ |
| 481 | Pierce (924,106) | WA | 27 | B+ |
| 482 | Macomb (877,624) | MI | 27 | B+ |
| 483 | Butler (389,910) | OH | 26 | B+ |
| 484 | Chesterfield (371,610) | VA | 26 | B+ |
| 485 | Etowah (103,208) | AL | 26 | B+ |
| 486 | Lynchburg (city) (79,255) | VA | 26 | B+ |
| 487 | Floyd (98,985) | GA | 25 | B+ |
| 488 | Sumner (200,553) | TN | 25 | B+ |
| 489 | Brazos (237,980) | TX | 25 | B+ |
| 490 | Forsyth (386,740) | NC | 25 | B+ |
| 491 | Chatham (298,143) | GA | 24 | B+ |
| 492 | Mecklenburg (1,130,906) | NC | 24 | B+ |
| 493 | Catawba (162,051) | NC | 24 | B+ |
| 494 | Scott (174,302) | IA | 24 | B+ |
| 495 | Jackson (717,021) | MO | 23 | B+ |
| 496 | Licking (180,311) | OH | 23 | B+ |
| 497 | Bartow (111,153) | GA | 23 | B+ |
| 498 | Fort Bend (859,721) | TX | 22 | B+ |
| 499 | Boone (137,676) | KY | 22 | B+ |
| 500 | Lee (177,663) | AL | 21 | B+ |
How Environmental Justice Screening Works
What is environmental justice screening?
This screening combines reported toxic chemical releases, health-based SDWIS records, Superfund sites, and TRI carcinogen reporting. It helps prioritize where to inspect source records; it does not measure an individual's exposure, health risk, or current drinking-water safety.
How is the environmental burden score calculated?
The score uses percentile ranking across four indicators: total reported toxic releases (35% weight), health-based SDWIS records per active community water system (25%), total Superfund sites (20%), and carcinogen facility ratio (20%). A score of 100 means the county is in the highest percentile of this composite. Release and Superfund indicators are raw counts, not population-normalized rates.
What data sources are used?
EPA Toxic Release Inventory (TRI) for chemical releases, PlainEnviro's health-based EPA SDWIS extract joined to active community water systems, EPA Superfund/NPL data, and TRI chemical classifications.
Data from U.S. Environmental Protection Agency (EPA). This screening tool is for informational purposes only and is not affiliated with the federal government.