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Lead Contamination

Lead in Illinois Drinking Water

Ranked by 90th percentile lead level (ppb) · Data from EPA SDWIS & UCMR

882
Cities Tested
23
Exceeds Limit
3%
% Exceeds Limit
2.5 ppb
State Avg
▲ 1% vs national
vs National
687
Health Violations
Analysis

Lead in Illinois: what the data shows

Illinois has 882 cities with lead monitoring data, with some cities exceeding the EPA action level of 15 ppb. The state average 90th percentile lead level is 2.5 ppb, compared to 3.3 ppb nationally — worse than the national average. 23 cities exceed the 15 ppb action level. High lead levels in tap water typically indicate aging infrastructure — lead service lines, lead solder in older plumbing, or lead-containing brass fixtures. There is no safe level of lead exposure for children. The 90th percentile measurement means that 90% of tap samples in a city are at or below the reported level. This is the standard EPA uses under the Lead and Copper Rule to determine if a water system needs to take corrective action. An NSF 53-certified pitcher or under-sink filter can effectively remove lead at the tap.

Comparison

Cities exceeding 15 ppb EPA Action Level

Illinois
3%
23 of 882 cities
→ ▲ 1% above national rate (worse)
National avg
2%
352 of 15325 cities
City Map

Lead data across Illinois

Each dot is a city, colored by overall water quality grade. Cities with lead levels above the 15 ppb EPA action level are highlighted. Size reflects population served.

Worst Offenders

Top 10 cities by lead level in Illinois

Highest Lead levels (ppb)

  1. 1 C Vergennes 95.0 ppb Yes 1K
  2. 2 C La Moille 54.8 ppb Yes 750
  3. 3 D Le Roy 49.0 ppb Yes 3K
  4. 4 D+ Kansas 46.8 ppb Yes 707
  5. 5 F Lockport 33.0 ppb Yes 26K
  6. 6 C Shannon 30.3 ppb Yes 801
  7. 7 B- Princeton 27.0 ppb Yes 8K
  8. 8 B- Bartlett 24.6 ppb Yes 42K
  9. 9 C Libertyville 24.5 ppb Yes 51K
  10. 10 D Aurora 24.0 ppb Yes 184K
All Cities

All Illinois cities ranked by lead level

# City Level Level Exceeds? Violations Grade
1 Vergennes 95.0 ppb
Yes 3
C
2 La Moille 54.8 ppb
Yes 1
C
3 Le Roy 49.0 ppb
Yes 12
D
4 Kansas 46.8 ppb
Yes 2
D+
5 Lockport 33.0 ppb
Yes 20
F
6 Shannon 30.3 ppb
Yes 34
C
7 Princeton 27.0 ppb
Yes 4
B-
8 Bartlett 24.6 ppb
Yes 49
B-
9 Libertyville 24.5 ppb
Yes 14
C
10 Aurora 24.0 ppb
Yes 20
D
11 Waynesville 22.8 ppb
Yes 25
C+
12 Lemont 20.0 ppb
Yes 26
D
13 Lovington 20.0 ppb
Yes 1
B-
14 Galva 19.0 ppb
Yes 16
C+
15 Morton Grove 17.2 ppb
Yes 2
B-
16 Northfield 17.0 ppb
Yes 1
B-
17 Evansville 17.0 ppb
Yes 13
C+
18 Danforth 17.0 ppb
Yes 5
C
19 Homewood 16.0 ppb
Yes 2
C
20 Herrin 16.0 ppb
Yes 0
C+
21 Highwood 16.0 ppb
Yes 0
B
22 Calumet City 15.4 ppb
Yes 3
C-
23 Burnham 15.1 ppb
Yes 3
C-
24 Palatine 15.0 ppb
No 2
B
25 Lake Barrington 15.0 ppb
No 5
B-
26 Sherman 15.0 ppb
No 0
C+
27 Hawthorn Woods 13.8 ppb
No 3
B
28 Greenup 13.5 ppb
No 0
B
29 Piper City 13.1 ppb
No 1
B
30 Danville 13.0 ppb
No 24
B
31 Hazel Crest 13.0 ppb
No 2
B
32 Rockdale 12.8 ppb
No 36
C-
33 Niles 12.4 ppb
No 3
B
34 Skokie 12.3 ppb
No 9
C-
35 De Kalb 12.0 ppb
No 7
B+
36 Freeport 12.0 ppb
No 19
B-
37 Plano 12.0 ppb
No 0
B+
38 North Riverside 12.0 ppb
No 4
B+
39 Farmer City 12.0 ppb
No 1
B-
40 Oak Lawn 11.6 ppb
No 2
B
41 West Frankfort 11.3 ppb
No 6
B+
42 Highland Park 11.0 ppb
No 2
B+
43 Woodstock 11.0 ppb
No 3
B-
44 Peoria Heights 11.0 ppb
No 5
B+
45 Okawville 11.0 ppb
No 4
A-
46 La Salle 10.7 ppb
No 6
B-
47 Colfax 10.7 ppb
No 5
B-
48 Wenona 10.7 ppb
No 12
B-
49 Park Ridge 10.6 ppb
No 1
B
50 Herscher 10.6 ppb
No 0
B+
51 Teutopolis 10.4 ppb
No 2
B
52 Lake Zurich 10.2 ppb
No 35
B+
53 Dolton 10.1 ppb
No 2
C
54 Amboy 10.1 ppb
No 0
B
55 Westville 10.0 ppb
No 13
B+
56 Menard 10.0 ppb
No 1
F
57 Pecatonica 10.0 ppb
No 1
A-
58 Richton Park 9.8 ppb
No 5
F
59 Maywood 9.8 ppb
No 3
C+
60 Westchester 9.7 ppb
No 2
B
61 Deerfield 9.4 ppb
No 4
B
62 Chicago 9.3 ppb
No 68
F
63 Burbank 9.2 ppb
No 1
B-
64 Valmeyer 9.1 ppb
No 1
C-
65 Waukegan 9.0 ppb
No 5
B+
66 Lake Bluff 9.0 ppb
No 18
C+
67 Pembroke 8.9 ppb
No 0
B-
68 Arlington Heights 8.8 ppb
No 1
B-
69 Lansing 8.8 ppb
No 2
B
70 Waterman 8.8 ppb
No 17
A-
71 Des Plaines 8.6 ppb
No 0
B+
72 Riverside 8.6 ppb
No 4
B+
73 Bradford 8.6 ppb
No 21
A-
74 Evergreen Park 8.6 ppb
No 0
B+
75 Winnetka 8.5 ppb
No 0
A
76 Bloomington 8.5 ppb
No 21
F
77 Rockford 8.4 ppb
No 43
F
78 Tampa 8.3 ppb
No 8
B+
79 Percy 8.3 ppb
No 16
B+
80 Romeoville 8.2 ppb
No 17
A-
81 Westmont 8.2 ppb
No 6
B-
82 Lake Forest 8.1 ppb
No 58
B-
83 Zeigler 8.0 ppb
No 0
B+
84 Edinburg 8.0 ppb
No 8
C-
85 Granville 7.7 ppb
No 27
B+
86 Alpha 7.6 ppb
No 13
C
87 Hudson 7.5 ppb
No 5
B+
88 Naperville 7.4 ppb
No 0
B+
89 Mundelein 7.4 ppb
No 22
F
90 Midlothian 7.3 ppb
No 5
A-
91 Elmwood Park 7.2 ppb
No 3
B+
92 Warrensburg 7.0 ppb
No 4
B-
93 Techny 7.0 ppb
No 2
A-
94 Prairie Du Rochr 7.0 ppb
No 1
B-
95 Brookfield 6.9 ppb
No 0
A-
96 South Chicago Heights 6.6 ppb
No 2
A-
97 Harwood Heights 6.6 ppb
No 3
A-
98 Saint Charles 6.5 ppb
No 3
B+
99 Kenilworth 6.5 ppb
No 1
A-
100 Clarendon Hills 6.3 ppb
No 1
A-
101 Toulon 6.3 ppb
No 13
B
102 Bensenville 6.3 ppb
No 4
A
103 Byron 6.2 ppb
No 1
C+
104 Shabbona 6.2 ppb
No 0
B+
105 La Grange 6.2 ppb
No 1
B
106 Forest View 6.2 ppb
No 1
B+
107 Elmhurst 6.1 ppb
No 2
A-
108 River Grove 6.1 ppb
No 3
A-
109 Cicero 6.1 ppb
No 3
B
110 Norridge 6.0 ppb
No 0
A-
111 Riverdale 5.9 ppb
No 6
B+
112 Broadview 5.9 ppb
No 3
B
113 Chicago Heights 5.9 ppb
No 0
B+
114 Metamora 5.7 ppb
No 10
C
115 Evanston 5.6 ppb
No 1
A+
116 Rock Island 5.6 ppb
No 5
B-
117 Freeburg 5.6 ppb
No 7
A-
118 Tower Hill 5.6 ppb
No 1
B+
119 Melrose Park 5.6 ppb
No 6
C
120 Johnston City 5.5 ppb
No 2
B
121 Franklin Park 5.5 ppb
No 5
B
122 Milledgeville 5.5 ppb
No 2
A
123 Flossmoor 5.4 ppb
No 1
B+
124 Yates City 5.4 ppb
No 12
A-
125 Pleasant Plains 5.4 ppb
No 0
B+
126 Chadwick 5.3 ppb
No 2
A-
127 Machesney Park 5.3 ppb
No 4
B
128 Vandalia 5.3 ppb
No 13
B-
129 Carrier Mills 5.3 ppb
No 3
A-
130 Groveland 5.2 ppb
No 0
A+
131 Downers Grove 5.1 ppb
No 2
A
132 Milford 5.1 ppb
No 5
C+
133 Oak Park 5.1 ppb
No 2
A
134 Saybrook 5.0 ppb
No 0
A-
135 Kingston 5.0 ppb
No 9
C+
136 Antioch 5.0 ppb
No 6
C-
137 Sandwich 5.0 ppb
No 10
B
138 Carlyle 5.0 ppb
No 15
B
139 Watseka 5.0 ppb
No 9
A-
140 Granite City 5.0 ppb
No 0
B+
141 Henry 5.0 ppb
No 3
A-
142 Port Byron 5.0 ppb
No 4
B-
143 Braceville 5.0 ppb
No 9
C
144 Normal 4.9 ppb
No 3
D+
145 Hennepin 4.9 ppb
No 7
A-
146 Hinsdale 4.8 ppb
No 0
A
147 White Hall 4.8 ppb
No 12
C+
148 Wyoming 4.8 ppb
No 8
B+
149 Matteson 4.8 ppb
No 1
B
150 Addison 4.7 ppb
No 0
A
151 Valrico 4.7 ppb
No 0
A-
152 Round Lake Beach 4.6 ppb
No 3
B+
153 Effingham 4.6 ppb
No 2
A-
154 Lyons 4.6 ppb
No 7
A-
155 Mascoutah 4.6 ppb
No 6
A-
156 Winnebago 4.6 ppb
No 2
A
157 Hardin 4.5 ppb
No 4
A-
158 Hebron 4.5 ppb
No 2
B
159 Lincolnwood 4.4 ppb
No 1
B+
160 Crystal Lake 4.3 ppb
No 4
A-
161 Oakwood 4.3 ppb
No 18
A-
162 Augusta 4.3 ppb
No 2
A-
163 Mount Prospect 4.3 ppb
No 1
B+
164 Elk Grove 4.2 ppb
No 2
A-
165 Macomb 4.2 ppb
No 39
D
166 Grayslake 4.2 ppb
No 7
B+
167 Illiopolis 4.2 ppb
No 5
B-
168 Olympia Fields 4.2 ppb
No 0
B
169 Calumet Park 4.2 ppb
No 1
B-
170 Nashville 4.1 ppb
No 27
C-
171 Hopkins Park 4.1 ppb
No 0
B
172 Stone Park 4.1 ppb
No 2
B+
173 Forest Park 4.0 ppb
No 2
A-
174 Thornton 4.0 ppb
No 0
B
175 Eureka 3.9 ppb
No 20
B
176 Hanover 3.9 ppb
No 2
A
177 Mulberry Grove 3.9 ppb
No 11
B+
178 North Lake 3.9 ppb
No 1
B+
179 Batavia 3.8 ppb
No 33
B+
180 Roselle 3.8 ppb
No 2
A-
181 Burbank (South Stickney) 3.7 ppb
No 7
B+
182 Maroa 3.7 ppb
No 10
A-
183 Equality 3.7 ppb
No 0
B+
184 Andover 3.7 ppb
No 0
A-
185 Posen 3.6 ppb
No 3
B+
186 Oblong 3.6 ppb
No 0
B+
187 Flanagan 3.6 ppb
No 1
B+
188 Pocahontas 3.5 ppb
No 1
C+
189 Washington 3.5 ppb
No 5
C
190 Morris 3.4 ppb
No 74
F
191 Red Bud 3.4 ppb
No 3
B-
192 East Galesburg 3.4 ppb
No 0
B
193 Centralia 3.3 ppb
No 2
B
194 Round Lake 3.3 ppb
No 3
A-
195 Kewanee 3.3 ppb
No 34
B
196 Carbon Cliff 3.3 ppb
No 12
B+
197 Stickney 3.3 ppb
No 1
B+
198 Sesser 3.3 ppb
No 0
A
199 Oak Brook 3.2 ppb
No 8
D
200 Georgetown 3.2 ppb
No 50
B
201 Chrisman 3.2 ppb
No 36
F
202 Watson 3.2 ppb
No 2
B+
203 Rock Falls 3.1 ppb
No 8
B
204 Wamac 3.1 ppb
No 0
B+
205 Mchenry 3.0 ppb
No 57
F
206 Alton 3.0 ppb
No 1
B
207 Du Quoin 3.0 ppb
No 6
B
208 Villa Grove 3.0 ppb
No 4
B+
209 Bunker Hill 3.0 ppb
No 0
A-
210 Sherrard 3.0 ppb
No 14
B
211 Sandoval 3.0 ppb
No 1
A
212 Andalusia 3.0 ppb
No 0
B+
213 Alto Pass 3.0 ppb
No 33
A-
214 Wonder Lake 2.9 ppb
No 6
C+
215 Apopka 2.9 ppb
No 0
B+
216 Atlanta 2.9 ppb
No 8
B+
217 Stronghurst 2.9 ppb
No 0
A-
218 Cissna Park 2.9 ppb
No 0
B+
219 Cary 2.8 ppb
No 11
A-
220 Long Creek 2.8 ppb
No 2
A
221 Dwight 2.8 ppb
No 8
B+
222 East Dundee 2.8 ppb
No 0
A-
223 Astoria 2.8 ppb
No 1
A-
224 Bannockburn 2.8 ppb
No 4
A-
225 Steger 2.8 ppb
No 8
B+
226 Bellwood 2.8 ppb
No 7
B+
227 Glen Ellyn 2.8 ppb
No 0
A-
228 Dixmoor 2.7 ppb
No 4
B-
229 Lake In The Hills 2.7 ppb
No 4
A-
230 North Chicago 2.7 ppb
No 5
B+
231 Western Springs 2.7 ppb
No 2
B
232 Auburn 2.7 ppb
No 5
A-
233 Morrisonville 2.7 ppb
No 1
B+
234 Hopedale 2.7 ppb
No 1
A-
235 Alhambra 2.7 ppb
No 1
A
236 Canton 2.6 ppb
No 7
B+
237 Pana 2.6 ppb
No 39
B
238 Royalton 2.6 ppb
No 0
B
239 Pleasant Hill 2.6 ppb
No 0
B
240 Green Valley 2.6 ppb
No 1
A-
241 Forrest 2.6 ppb
No 0
A-
242 Oreana 2.5 ppb
No 0
B+
243 Annawan 2.5 ppb
No 5
A-
244 Marshall 2.5 ppb
No 0
A-
245 Riverwoods 2.5 ppb
No 1
A+
246 Savanna 2.5 ppb
No 0
B+
247 Tremont 2.5 ppb
No 1
A-
248 Richmond 2.5 ppb
No 1
A-
249 Tovey 2.5 ppb
No 1
A-
250 Blue Island 2.5 ppb
No 19
C
251 Galena 2.5 ppb
No 17
D+
252 Mount Vernon 2.4 ppb
No 2
B+
253 Breese 2.4 ppb
No 0
C+
254 Orion 2.4 ppb
No 2
B-
255 Holiday Hills 2.4 ppb
No 0
A
256 Carbondale 2.3 ppb
No 26
D
257 South Holland 2.3 ppb
No 5
B-
258 Park Forest 2.3 ppb
No 2
A
259 Gilberts 2.3 ppb
No 0
A-
260 Island Lake 2.3 ppb
No 1
A-
261 Marissa 2.3 ppb
No 1
B+
262 Dunlap 2.3 ppb
No 2
A
263 Harvey 2.2 ppb
No 1
B
264 Coal Valley 2.2 ppb
No 12
F
265 Hamilton 2.2 ppb
No 7
A
266 Clifton 2.2 ppb
No 3
C
267 Cobden 2.2 ppb
No 0
A-
268 Albany 2.2 ppb
No 2
D+
269 Phoenix 2.1 ppb
No 6
C+
270 Crestwood 2.1 ppb
No 0
B
271 Pittsfield 2.1 ppb
No 18
A
272 Shelbyville 2.1 ppb
No 0
A-
273 Brighton 2.1 ppb
No 3
B+
274 St David 2.1 ppb
No 2
A-
275 Shipman 2.1 ppb
No 15
A-
276 Reynolds 2.1 ppb
No 0
A
277 East St Louis 2.0 ppb
No 1
B+
278 Dieterich 2.0 ppb
No 7
F
279 Grays Lake 2.0 ppb
No 6
A
280 Maryville 2.0 ppb
No 2
A
281 Riverton 2.0 ppb
No 0
B+
282 Pontiac 2.0 ppb
No 10
C
283 Earlville 2.0 ppb
No 0
A
284 Arenzville 2.0 ppb
No 15
A-
285 Mt. Olive 2.0 ppb
No 9
B+
286 Casey 1.9 ppb
No 16
B
287 Griggsville 1.9 ppb
No 0
A-
288 Downs 1.9 ppb
No 8
B
289 Meredosia 1.9 ppb
No 0
A-
290 Wolf Lake 1.9 ppb
No 4
A-
291 Ashley 1.9 ppb
No 7
A
292 Berwyn 1.8 ppb
No 3
A-
293 Morton 1.8 ppb
No 13
B-
294 Bethalto 1.8 ppb
No 0
A-
295 Waterloo 1.8 ppb
No 1
C
296 Rochelle 1.8 ppb
No 11
A
297 Chester 1.8 ppb
No 7
A
298 Chillicothe 1.8 ppb
No 11
D+
299 Hoopeston 1.8 ppb
No 2
A-
300 Paxton 1.8 ppb
No 0
B+
301 Sleepy Hollow 1.8 ppb
No 4
A-
302 Philo 1.8 ppb
No 0
A-
303 Ashkum 1.8 ppb
No 11
C+
304 Union 1.8 ppb
No 5
B+
305 Steeleville 1.7 ppb
No 24
D+
306 Bluford 1.7 ppb
No 1
A
307 Moweaqua 1.7 ppb
No 0
A-
308 Payson 1.7 ppb
No 3
A-
309 Loda 1.7 ppb
No 1
B
310 Carpentersville 1.6 ppb
No 0
B+
311 Carrollton 1.6 ppb
No 1
A-
312 Green Rock 1.6 ppb
No 0
A
313 Buckley 1.6 ppb
No 0
A
314 Farina 1.6 ppb
No 5
A
315 Warrenville 1.6 ppb
No 0
B+
316 Schiller Park 1.5 ppb
No 7
A-
317 Wheaton 1.5 ppb
No 2
B-
318 Glendale Heights 1.5 ppb
No 1
A
319 Markham 1.5 ppb
No 7
B
320 Mount Zion 1.5 ppb
No 29
B-
321 Lakewood 1.5 ppb
No 2
B-
322 Heyworth 1.5 ppb
No 0
A
323 Bement 1.5 ppb
No 1
B+
324 Stillman Valley 1.5 ppb
No 0
A
325 Ashton 1.5 ppb
No 0
B+
326 Loami 1.5 ppb
No 1
A-
327 Kirkwood 1.5 ppb
No 27
B+
328 New Boston 1.5 ppb
No 6
A
329 Hanover Park 1.5 ppb
No 3
A
330 Kankakee 1.4 ppb
No 40
F
331 Yorkville 1.4 ppb
No 83
C+
332 Braidwood 1.4 ppb
No 14
A-
333 Charleston 1.4 ppb
No 10
C+
334 Taylorville 1.4 ppb
No 0
A-
335 Mahomet 1.4 ppb
No 4
B+
336 Harvard 1.4 ppb
No 3
A
337 Eldorado 1.4 ppb
No 3
B-
338 Geneseo 1.4 ppb
No 124
F
339 Rockton 1.4 ppb
No 31
C
340 Anna 1.4 ppb
No 7
B-
341 Creve Coeur 1.4 ppb
No 4
A-
342 Round Lake Park 1.4 ppb
No 1
B-
343 Makanda 1.4 ppb
No 6
B+
344 Round Lake Heights 1.4 ppb
No 0
A-
345 De Soto 1.4 ppb
No 2
A
346 Sheffield 1.4 ppb
No 2
A
347 Cambridge 1.3 ppb
No 11
A-
348 Girard 1.3 ppb
No 7
A-
349 Hampton 1.3 ppb
No 3
B
350 Barry 1.3 ppb
No 3
B+
351 Blue Mound 1.3 ppb
No 26
C
352 Johnsburg 1.3 ppb
No 5
B-
353 Brimfield 1.3 ppb
No 6
A-
354 Wataga 1.3 ppb
No 3
B
355 Mendon 1.3 ppb
No 2
A+
356 Stanford 1.3 ppb
No 1
A
357 Blandinsville 1.3 ppb
No 6
A
358 East Hazel Crest 1.3 ppb
No 4
A-
359 Crest Hill 1.2 ppb
No 12
F
360 Alsip 1.2 ppb
No 2
A-
361 Marion 1.2 ppb
No 29
D
362 Loves Park 1.2 ppb
No 35
B
363 Peoria 1.2 ppb
No 5
C-
364 Lebanon 1.2 ppb
No 6
A
365 Oregon 1.2 ppb
No 4
B+
366 Norris City 1.2 ppb
No 1
A-
367 Mount Morris 1.2 ppb
No 26
A-
368 Forreston 1.2 ppb
No 0
A
369 Louisville 1.2 ppb
No 1
A-
370 Marine 1.2 ppb
No 0
B
371 Roseville 1.2 ppb
No 11
A-
372 Mathersville 1.2 ppb
No 0
A
373 Deer Creek 1.2 ppb
No 1
A-
374 Lombard 1.2 ppb
No 1
A-
375 Moline 1.1 ppb
No 7
C
376 South Elgin 1.1 ppb
No 28
C
377 Rantoul 1.1 ppb
No 54
D
378 Mount Carroll 1.1 ppb
No 8
A
379 Viola 1.1 ppb
No 27
B
380 Clay City 1.1 ppb
No 1
A
381 Boynton Beach 1.1 ppb
No 3
B
382 Wyanet 1.1 ppb
No 2
B+
383 Minooka 1.1 ppb
No 6
A-
384 Lynwood 1.1 ppb
No 3
B
385 East Chicago Heights 1.0 ppb
No 19
B-
386 Quincy 1.0 ppb
No 3
B-
387 East Peoria 1.0 ppb
No 133
F
388 Villa Park 1.0 ppb
No 2
A
389 Streator 1.0 ppb
No 14
A-
390 Scott Air Force Base 1.0 ppb
No 3
A
391 Milan 1.0 ppb
No 28
D
392 Morrison 1.0 ppb
No 3
B+
393 Delavan 1.0 ppb
No 2
B+
394 Pekin 1.0 ppb
No 1
D+
395 Cairo 1.0 ppb
No 0
A
396 Macon 1.0 ppb
No 1
B+
397 Rosiclare 1.0 ppb
No 1
A
398 Worden 1.0 ppb
No 2
B
399 Crescent City 1.0 ppb
No 2
A
400 Glenwood 0.9 ppb
No 0
B+
401 Rolling Meadows 0.9 ppb
No 3
A
402 Hillside 0.9 ppb
No 1
A
403 West Chicago 0.9 ppb
No 22
A
404 Garden Homes 0.9 ppb
No 1
B+
405 Carol Stream 0.8 ppb
No 1
A-
406 Princeville 0.8 ppb
No 13
A
407 Paris 0.7 ppb
No 12
A
408 Berkeley 0.7 ppb
No 4
A
409 Woodlawn 0.7 ppb
No 1
A
410 Woodhull 0.7 ppb
No 3
A
411 Sparta 0.6 ppb
No 21
B-
412 Pontoon Beach 0.6 ppb
No 1
B+
413 Greenfield 0.6 ppb
No 28
C
414 Thomson 0.6 ppb
No 1
A-
415 Wilmette 0.5 ppb
No 0
A
416 Pearl City 0.4 ppb
No 0
D
417 Crete 0.1 ppb
No 4
B
418 Joliet 0.0 ppb
No 131
F
419 Springfield 0.0 ppb
No 3
D
420 Elgin 0.0 ppb
No 9
C-
421 Decatur 0.0 ppb
No 28
B
422 Schaumburg 0.0 ppb
No 17
B+
423 Bolingbrook 0.0 ppb
No 2
A
424 Godfrey 0.0 ppb
No 22
C+
425 Orland Park 0.0 ppb
No 0
A-
426 Tinley Park 0.0 ppb
No 0
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427 Plainfield 0.0 ppb
No 23
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428 Hoffman Estates 0.0 ppb
No 7
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429 Glenview 0.0 ppb
No 3
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430 O Fallon 0.0 ppb
No 17
A-
431 Northbrook 0.0 ppb
No 55
D
432 Buffalo Grove 0.0 ppb
No 1
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433 Wheeling 0.0 ppb
No 5
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434 Streamwood 0.0 ppb
No 2
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435 Oswego 0.0 ppb
No 24
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No 18
D+
437 Darien 0.0 ppb
No 6
C+
438 Woodridge 0.0 ppb
No 2
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No 67
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440 Galesburg 0.0 ppb
No 1
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441 Collinsville 0.0 ppb
No 12
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No 6
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No 4
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444 Mattoon 0.0 ppb
No 14
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No 4
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446 Huntley 0.0 ppb
No 15
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447 New Lenox 0.0 ppb
No 7
D+
448 Oak Forest 0.0 ppb
No 0
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449 Belvidere 0.0 ppb
No 8
A-
450 Frankfort 0.0 ppb
No 7
B+
451 Zion 0.0 ppb
No 1
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452 Lisle 0.0 ppb
No 2
A-
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No 28
B-
454 East Moline 0.0 ppb
No 18
D+
455 Weston 0.0 ppb
No 6
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456 Mokena 0.0 ppb
No 2
A
457 Dixon 0.0 ppb
No 57
C
458 Ottawa 0.0 ppb
No 62
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459 Shorewood 0.0 ppb
No 4
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460 Palos Hills 0.0 ppb
No 3
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461 Sycamore 0.0 ppb
No 31
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462 Justice 0.0 ppb
No 0
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463 North Aurora 0.0 ppb
No 27
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No 3
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465 Country Club Hills 0.0 ppb
No 0
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466 Bridgeview 0.0 ppb
No 0
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467 Chatham 0.0 ppb
No 2
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468 Palos Heights 0.0 ppb
No 1
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469 Cahokia 0.0 ppb
No 0
A+
470 Murphysboro 0.0 ppb
No 8
B
471 Coleta 0.0 ppb
No 1
A-
472 Robinson 0.0 ppb
No 0
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473 Hickory Hills 0.0 ppb
No 1
A
474 Lindenhurst 0.0 ppb
No 0
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475 Chicago Ridge 0.0 ppb
No 1
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476 Wauconda 0.0 ppb
No 3
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477 Wood Dale 0.0 ppb
No 0
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478 Channahon 0.0 ppb
No 45
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479 Caseyville 0.0 ppb
No 3
B+
480 La Grange Park 0.0 ppb
No 2
A
481 Glen Carbon 0.0 ppb
No 0
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482 Harrisburg 0.0 ppb
No 2
C+
483 Jerseyville 0.0 ppb
No 6
A-
484 Benton 0.0 ppb
No 5
D
485 River Forest 0.0 ppb
No 1
B+
486 Carlinville 0.0 ppb
No 74
D
487 Peru 0.0 ppb
No 92
F
488 Sugar Grove 0.0 ppb
No 7
A-
489 Burr Ridge 0.0 ppb
No 0
A
490 Columbia 0.0 ppb
No 0
B+
491 Salem 0.0 ppb
No 7
C
492 Worth 0.0 ppb
No 3
A
493 Summit 0.0 ppb
No 1
B+
494 Highland 0.0 ppb
No 16
B
495 Barrington 0.0 ppb
No 3
B+
496 St. Charles 0.0 ppb
No 17
F
497 Wood River 0.0 ppb
No 0
B+
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No 21
C+
499 Fairfield 0.0 ppb
No 16
D+
500 Sauk 0.0 ppb
No 5
D
501 Winfield 0.0 ppb
No 1
A
502 Itasca 0.0 ppb
No 2
A
503 Beach Park 0.0 ppb
No 3
B+
504 Lake Villa 0.0 ppb
No 2
A
505 Willowbrook 0.0 ppb
No 1
B
506 Silvis 0.0 ppb
No 14
F
507 Monmouth 0.0 ppb
No 29
A-
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No 3
F
509 Greenville 0.0 ppb
No 5
A-
510 Pinckneyville 0.0 ppb
No 13
C+
511 Lincolnshire 0.0 ppb
No 2
A
512 South Beloit 0.0 ppb
No 3
A-
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No 10
B
514 West Dundee 0.0 ppb
No 7
A
515 Hampshire 0.0 ppb
No 15
B
516 Palos Park 0.0 ppb
No 1
B
517 Marengo 0.0 ppb
No 1
A-
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No 5
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519 Sullivan 0.0 ppb
No 5
A-
520 Flora 0.0 ppb
No 9
A
521 Clinton 0.0 ppb
No 18
B+
522 Arthur 0.0 ppb
No 0
B
523 Carmi 0.0 ppb
No 0
A
524 Mount Carmel 0.0 ppb
No 11
B
525 Elburn 0.0 ppb
No 63
D
526 Pk Forest South 0.0 ppb
No 2
A
527 Mendota 0.0 ppb
No 25
B
528 Volo 0.0 ppb
No 11
C
529 Pittsburg 0.0 ppb
No 0
B+
530 Mcleansboro 0.0 ppb
No 1
B-
531 Carterville 0.0 ppb
No 3
C+
532 Litchfield 0.0 ppb
No 5
D+
533 Lagrange 0.0 ppb
No 0
A-
534 Winthrop Harbor 0.0 ppb
No 7
C
535 Hillsboro 0.0 ppb
No 20
B-
536 Dekalb 0.0 ppb
No 2
A-
537 Countryside 0.0 ppb
No 0
A
538 Brownstown 0.0 ppb
No 10
C+
539 Metropolis 0.0 ppb
No 0
A-
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No 0
A+
541 Winchester 0.0 ppb
No 8
B-
542 Beardstown 0.0 ppb
No 1
A
543 Coal City 0.0 ppb
No 40
D
544 East Alton 0.0 ppb
No 0
B
545 Staunton 0.0 ppb
No 21
C+
546 Monticello 0.0 ppb
No 0
A-
547 Wilmington 0.0 ppb
No 10
C+
548 Spring Valley 0.0 ppb
No 15
A
549 Poplar Grove 0.0 ppb
No 8
C+
550 Marseilles 0.0 ppb
No 116
D
551 Odin 0.0 ppb
No 2
A-
552 Mt Vernon 0.0 ppb
No 1
A
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No 19
C+
554 Robbins 0.0 ppb
No 7
C-
555 Genoa 0.0 ppb
No 4
A
556 Westhaven 0.0 ppb
No 3
A+
557 Albion 0.0 ppb
No 1
A-
558 Monee 0.0 ppb
No 2
B
559 Tuscola 0.0 ppb
No 0
A
560 Fox River Grove 0.0 ppb
No 10
B
561 Wayne City 0.0 ppb
No 15
B+
562 Aviston 0.0 ppb
No 42
C-
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No 2
B+
564 Beecher 0.0 ppb
No 0
A-
565 Dupo 0.0 ppb
No 0
B
566 Virden 0.0 ppb
No 15
A-
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No 0
B+
568 Sublette 0.0 ppb
No 15
A-
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No 6
C+
570 Oglesby 0.0 ppb
No 6
B-
571 Cortland 0.0 ppb
No 25
A
572 Hometown 0.0 ppb
No 2
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573 Peotone 0.0 ppb
No 3
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574 New Baden 0.0 ppb
No 2
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575 Millstadt 0.0 ppb
No 4
A-
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No 7
B
577 Wasco 0.0 ppb
No 14
A
578 Rochester 0.0 ppb
No 0
A-
579 Rosemont 0.0 ppb
No 0
A-
580 Bridgeport 0.0 ppb
No 12
B-
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No 14
C+
582 Fairbury 0.0 ppb
No 1
A
583 Camp Point 0.0 ppb
No 6
B+
584 Tolono 0.0 ppb
No 6
B+
585 New Douglas 0.0 ppb
No 6
B
586 Hainesville 0.0 ppb
No 3
B+
587 South Jacksonville 0.0 ppb
No 3
C-
588 Gibson City 0.0 ppb
No 0
A
589 Forsyth 0.0 ppb
No 2
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No 6
A+
591 Mackinaw 0.0 ppb
No 1
A
592 Fulton 0.0 ppb
No 6
B
593 Abingdon 0.0 ppb
No 10
B+
594 Mount Sterling 0.0 ppb
No 1
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595 Indian Head Park 0.0 ppb
No 1
B+
596 Momence 0.0 ppb
No 11
D+
597 Knoxville 0.0 ppb
No 21
A
598 Christopher 0.0 ppb
No 0
B+
599 Lakemoor 0.0 ppb
No 0
B+
600 Newton 0.0 ppb
No 0
A+
601 Marquette Heights 0.0 ppb
No 0
A
602 Bushnell 0.0 ppb
No 6
A
603 Havana 0.0 ppb
No 0
A-
604 Arcola 0.0 ppb
No 6
B+
605 Rushville 0.0 ppb
No 5
B+
606 Mulkeytown 0.0 ppb
No 0
A-
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No 0
A-
608 Tamms 0.0 ppb
No 0
B+
609 El Paso 0.0 ppb
No 1
A-
610 Trenton 0.0 ppb
No 9
B+
611 Pawnee 0.0 ppb
No 7
A-
612 New Burnside 0.0 ppb
No 3
A-
613 Lena 0.0 ppb
No 1
A-
614 Glasford 0.0 ppb
No 64
B
615 Lincoln 0.0 ppb
No 8
F
616 Mason City 0.0 ppb
No 15
A
617 Carthage 0.0 ppb
No 18
A-
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No 20
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No 24
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No 3
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621 Whittington 0.0 ppb
No 0
A-
622 Catlin 0.0 ppb
No 11
A-
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No 9
B+
624 Dawson 0.0 ppb
No 0
C-
625 Nokomis 0.0 ppb
No 7
A
626 Buncombe 0.0 ppb
No 5
B
627 Polo 0.0 ppb
No 2
A
628 Seneca 0.0 ppb
No 10
A
629 Davis Junction 0.0 ppb
No 0
B+
630 Altamont 0.0 ppb
No 6
A-
631 East Dubuque 0.0 ppb
No 1
A-
632 Elwood 0.0 ppb
No 2
A-
633 Tamaroa 0.0 ppb
No 0
A-
634 Ava 0.0 ppb
No 2
B+
635 Belle Rive 0.0 ppb
No 0
A-
636 Vienna 0.0 ppb
No 17
B
637 Prophetstown 0.0 ppb
No 2
B
638 Elmwood 0.0 ppb
No 9
A
639 Cuba 0.0 ppb
No 5
A-
640 Fisher 0.0 ppb
No 1
A-
641 Hinckley 0.0 ppb
No 11
A
642 Kirkland 0.0 ppb
No 1
A-
643 Roanoke 0.0 ppb
No 3
A-
644 Dix 0.0 ppb
No 0
A
645 New Athens 0.0 ppb
No 4
B+
646 Merrionette Park 0.0 ppb
No 0
B
647 Somonauk 0.0 ppb
No 2
A-
648 Lexington 0.0 ppb
No 2
B+
649 Minonk 0.0 ppb
No 8
A
650 Chenoa 0.0 ppb
No 19
F
651 Waltonville 0.0 ppb
No 0
A
652 South Roxana 0.0 ppb
No 0
B-
653 Pierron 0.0 ppb
No 10
B
654 Lacon 0.0 ppb
No 0
A
655 Lancaster 0.0 ppb
No 0
B+
656 Gardner 0.0 ppb
No 24
B+
657 East Carondelet 0.0 ppb
No 0
A-
658 De Pue 0.0 ppb
No 23
A-
659 Saint Jacob 0.0 ppb
No 4
B
660 Jonesboro 0.0 ppb
No 1
A
661 Stonington 0.0 ppb
No 0
A
662 Gilman 0.0 ppb
No 1
B+
663 Grantfork 0.0 ppb
No 2
C-
664 Olive Branch 0.0 ppb
No 0
B+
665 Roodhouse 0.0 ppb
No 1
B+
666 Stockton 0.0 ppb
No 0
A+
667 Cambria 0.0 ppb
No 0
A
668 Crainville 0.0 ppb
No 2
A-
669 St Rose 0.0 ppb
No 8
D
670 Sheridan 0.0 ppb
No 0
A
671 Annapolis 0.0 ppb
No 1
B-
672 Neoga 0.0 ppb
No 32
B+
673 Grayville 0.0 ppb
No 0
A-
674 Benld 0.0 ppb
No 6
A-
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No 12
A-
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No 4
C+
677 Jerome 0.0 ppb
No 1
B+
678 Kincaid 0.0 ppb
No 4
B+
679 Manito 0.0 ppb
No 0
A-
680 Germantown 0.0 ppb
No 1
C+
681 Palmyra 0.0 ppb
No 39
D
682 Virginia 0.0 ppb
No 0
A
683 Roxana 0.0 ppb
No 0
A
684 Lanark 0.0 ppb
No 1
B+
685 Maple Park 0.0 ppb
No 18
B-
686 North Pekin 0.0 ppb
No 1
A-
687 Bethany 0.0 ppb
No 1
A-
688 Hodgkins 0.0 ppb
No 0
A-
689 Green Oaks 0.0 ppb
No 2
B-
690 Oak Brook Terr 0.0 ppb
No 7
B+
691 Cerro Gordo 0.0 ppb
No 0
A-
692 Durand 0.0 ppb
No 3
B
693 Gridley 0.0 ppb
No 1
B+
694 Onarga 0.0 ppb
No 1
B+
695 Grandview 0.0 ppb
No 2
B+
696 Murrayville 0.0 ppb
No 0
B+
697 North Utica 0.0 ppb
No 25
B
698 Colchester 0.0 ppb
No 23
B+
699 Nilwood 0.0 ppb
No 6
B+
700 Malta 0.0 ppb
No 18
D
701 Danvers 0.0 ppb
No 48
B-
702 New Berlin 0.0 ppb
No 28
D
703 Tower Lakes 0.0 ppb
No 1
B-
704 Toluca 0.0 ppb
No 8
A
705 Capron 0.0 ppb
No 1
A-
706 Ashland 0.0 ppb
No 10
A-
707 Rossville 0.0 ppb
No 15
A-
708 Warren 0.0 ppb
No 0
B+
709 Harristown 0.0 ppb
No 0
A-
710 Assumption 0.0 ppb
No 4
C+
711 Walnut 0.0 ppb
No 3
B+
712 Toledo 0.0 ppb
No 0
A
713 Saint Elmo 0.0 ppb
No 13
A
714 Ladd 0.0 ppb
No 17
A
715 Hartford 0.0 ppb
No 2
A-
716 Chatsworth 0.0 ppb
No 0
B+
717 Hanna City 0.0 ppb
No 6
A
718 Albers 0.0 ppb
No 8
B-
719 Hillcrest 0.0 ppb
No 4
B+
720 Homer 0.0 ppb
No 1
A-
721 La Harpe 0.0 ppb
No 21
B-
722 Martinsville 0.0 ppb
No 3
B+
723 Nauvoo 0.0 ppb
No 20
B+
724 Saint Anne 0.0 ppb
No 3
C+
725 Windsor 0.0 ppb
No 11
C-
726 Sumner 0.0 ppb
No 6
B+
727 Waverly 0.0 ppb
No 22
A
728 Dowell 0.0 ppb
No 0
A-
729 Valier 0.0 ppb
No 0
A-
730 Minier 0.0 ppb
No 1
A
731 Walnut Hill 0.0 ppb
No 0
A+
732 Divernon 0.0 ppb
No 5
A-
733 Buffalo 0.0 ppb
No 0
B-
734 Atwood 0.0 ppb
No 4
A-
735 Gorham 0.0 ppb
No 1
A-
736 Mounds 0.0 ppb
No 2
B
737 Ridge Farm 0.0 ppb
No 2
C+
738 Oquawka 0.0 ppb
No 0
A+
739 Chebanse 0.0 ppb
No 6
B+
740 Crossville 0.0 ppb
No 0
A-
741 Hamel 0.0 ppb
No 0
B+
742 Irvington 0.0 ppb
No 0
A-
743 Elkville 0.0 ppb
No 4
B
744 Goreville 0.0 ppb
No 2
B+
745 Thomasboro 0.0 ppb
No 1
B
746 Enfield 0.0 ppb
No 2
A
747 Shawneetown 0.0 ppb
No 0
B+
748 Coulterville 0.0 ppb
No 14
B+
749 Valrico 0.0 ppb
No 4
C+
750 Washburn 0.0 ppb
No 0
B+
751 Hoyleton 0.0 ppb
No 1
A-
752 Odell 0.0 ppb
No 14
A
753 Littleton 0.0 ppb
No 9
B+
754 South Pekin 0.0 ppb
No 0
B+
755 Mazon 0.0 ppb
No 1
B+
756 Galatia 0.0 ppb
No 0
B-
757 Newark 0.0 ppb
No 2
A-
758 Energy 0.0 ppb
No 0
A-
759 Raymond 0.0 ppb
No 0
A+
760 Ramsey 0.0 ppb
No 3
B+
761 Atkinson 0.0 ppb
No 3
B+
762 Leland 0.0 ppb
No 0
A-
763 Sheldon 0.0 ppb
No 0
B+
764 Kinmundy 0.0 ppb
No 14
A
765 Mansfield 0.0 ppb
No 2
A
766 Goodfield 0.0 ppb
No 6
A-
767 Avon 0.0 ppb
No 3
A-
768 Lawrencville 0.0 ppb
No 17
B
769 Beckemeyer 0.0 ppb
No 1
A
770 Gifford 0.0 ppb
No 0
B
771 Mcclure 0.0 ppb
No 0
B+
772 Argenta 0.0 ppb
No 0
B
773 Bismarck 0.0 ppb
No 1
B+
774 Franklin Grove 0.0 ppb
No 0
A-
775 Ridgway 0.0 ppb
No 7
B+
776 Paw Paw 0.0 ppb
No 1
A
777 Tallula 0.0 ppb
No 0
A-
778 Dahlgren 0.0 ppb
No 0
A-
779 Hanaford 0.0 ppb
No 0
B+
780 Cave In Rock 0.0 ppb
No 4
A-
781 Chandlerville 0.0 ppb
No 6
B+
782 Alexis 0.0 ppb
No 3
B+
783 Newman 0.0 ppb
No 0
B+
784 Paloma 0.0 ppb
No 3
B+
785 Livingston 0.0 ppb
No 0
B+
786 West Salem 0.0 ppb
No 1
A
787 Noble 0.0 ppb
No 1
A-
788 Elizabeth 0.0 ppb
No 0
A
789 Franklin 0.0 ppb
No 3
A-
790 New Memphis 0.0 ppb
No 4
B+
791 Willisville 0.0 ppb
No 1
B+
792 Long Grove 0.0 ppb
No 51
C-
793 Mclean 0.0 ppb
No 3
A-
794 Dallas City 0.0 ppb
No 1
B+
795 Farmersville 0.0 ppb
No 0
A-
796 Hurst 0.0 ppb
No 3
B
797 Greenview 0.0 ppb
No 0
A-
798 North City 0.0 ppb
No 0
A
799 Dongola 0.0 ppb
No 0
A-
800 Camargo 0.0 ppb
No 7
B
801 Findlay 0.0 ppb
No 21
B-
802 Ogden 0.0 ppb
No 2
A-
803 Bluffs 0.0 ppb
No 0
A+
804 Keithsburg 0.0 ppb
No 0
A-
805 Stewardson 0.0 ppb
No 1
A
806 Tilden 0.0 ppb
No 3
B+
807 Tiskilwa 0.0 ppb
No 3
B+
808 Oakland 0.0 ppb
No 0
B+
809 Vermont 0.0 ppb
No 24
D
810 Brookport 0.0 ppb
No 1
B
811 Taylor Springs 0.0 ppb
No 4
A
812 Moro 0.0 ppb
No 1
B
813 Thayer 0.0 ppb
No 4
A-
814 Taylor Ridge 0.0 ppb
No 6
B+
815 Tonica 0.0 ppb
No 16
A
816 South Wilmington 0.0 ppb
No 20
B+
817 Oneida 0.0 ppb
No 3
A-
818 Fairmount 0.0 ppb
No 0
A-
819 Towanda 0.0 ppb
No 4
B-
820 Tampico 0.0 ppb
No 1
B
821 Potomac 0.0 ppb
No 1
B-
822 White Heath 0.0 ppb
No 1
A-
823 Creal Springs 0.0 ppb
No 3
B
824 Champaign 0.0 ppb
No 0
A
825 Lenzburg 0.0 ppb
No 3
B
826 Westfield 0.0 ppb
No 4
C-
827 West City 0.0 ppb
No 0
A-
828 Cedarville 0.0 ppb
No 2
B+
829 Dalzell 0.0 ppb
No 1
B+
830 Chapin 0.0 ppb
No 1
B+
831 Niantic 0.0 ppb
No 0
A-
832 Coffeen 0.0 ppb
No 7
B
833 Cordova 0.0 ppb
No 2
B-
834 Ashmore 0.0 ppb
No 0
C
835 Bartelso 0.0 ppb
No 1
B+
836 Cisne 0.0 ppb
No 1
A-
837 Golconda 0.0 ppb
No 6
B+
838 St Libory 0.0 ppb
No 0
A
839 Creston 0.0 ppb
No 0
A-
840 Ursa 0.0 ppb
No 1
A
841 Keyesport 0.0 ppb
No 9
A-
842 Golden 0.0 ppb
No 0
A
843 Nebo 0.0 ppb
No 1
D
844 Hutsonville 0.0 ppb
No 5
A-
845 Liberty 0.0 ppb
No 2
A-
846 Raleigh 0.0 ppb
No 0
B+
847 Patoka 0.0 ppb
No 26
A-
848 Bedford Park 0.0 ppb
No 1
A+
849 Damiansville 0.0 ppb
No 4
C+
850 Baldwin 0.0 ppb
No 2
A
851 Davis 0.0 ppb
No 0
A
852 Fairview 0.0 ppb
No 15
A-
853 Saint Francisville 0.0 ppb
No 0
C+
854 Sawyerville 0.0 ppb
No 7
B
855 Williamsfield 0.0 ppb
No 5
A-
856 Godley 0.0 ppb
No 0
A-
857 Elkhart 0.0 ppb
No 6
B
858 Cullom 0.0 ppb
No 1
B+
859 Schram City 0.0 ppb
No 4
A-
860 Carlock 0.0 ppb
No 24
A-
861 Dorchester 0.0 ppb
No 8
A-
862 Grand Tower 0.0 ppb
No 2
A-
863 Sidell 0.0 ppb
No 0
A-
864 Mark 0.0 ppb
No 19
A-
865 Xenia 0.0 ppb
No 6
A-
866 Industry 0.0 ppb
No 2
A-
867 Lyndon 0.0 ppb
No 2
A-
868 Good Hope 0.0 ppb
No 4
A-
869 Wilsonville 0.0 ppb
No 6
A-
870 Burlington 0.0 ppb
No 5
B+
871 Mound City 0.0 ppb
No 0
A-
872 Belknap 0.0 ppb
No 0
A-
873 Grand Ridge 0.0 ppb
No 26
B+
874 Wapella 0.0 ppb
No 0
A
875 Colp 0.0 ppb
No 2
B-
876 West Union 0.0 ppb
No 0
A-
877 Beecher City 0.0 ppb
No 4
D+
878 Cornell 0.0 ppb
No 0
A
879 Dakota 0.0 ppb
No 0
A
880 Essex 0.0 ppb
No 14
B-
881 London Mills 0.0 ppb
No 1
A
882 Rankin 0.0 ppb
No 1
B+
FAQ

Frequently asked questions about lead in Illinois

Is lead in Illinois tap water a concern?

Yes — 23 of 882 cities with lead data exceed the EPA action level of 15 ppb. The state average is 2.5 ppb. Even below the action level, lead poses health risks especially for children and pregnant women. If your home was built before 1986, consider testing your tap water directly.

How can I reduce lead exposure from Illinois tap water?

Use an NSF 53-certified water filter, which is specifically certified to reduce lead. Run your cold tap for 30 seconds before drinking or cooking, especially if water has been sitting in pipes for hours. Never use hot tap water for cooking or making baby formula, as heat increases lead leaching from pipes.

Which Illinois cities have the highest lead levels?

The cities with the highest 90th percentile lead levels in Illinois are: Vergennes (95.0 ppb), La Moille (54.8 ppb), Le Roy (49.0 ppb), Kansas (46.8 ppb), Lockport (33.0 ppb). See the full ranked table above.

More contaminants

Other contaminants in Illinois

PFAS in Illinois
Ranked by compounds detected
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Copper in Illinois
Ranked by 90th percentile level (mg/L)
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HAA5 in Illinois
Ranked by average concentration (µg/L)
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Chromium-6 in Illinois
Ranked by max detected (µg/L)
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Arsenic in Illinois
Ranked by violation count
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Nitrate in Illinois
Ranked by violation count
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Strontium in Illinois
Ranked by max detected (µg/L)
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1,4-Dioxane in Illinois
Ranked by max detected (µg/L)
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Manganese in Illinois
Ranked by max detected (µg/L)
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Vanadium in Illinois
Ranked by max detected (µg/L)
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Chlorate in Illinois
Ranked by max detected (µg/L)
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Molybdenum in Illinois
Ranked by max detected (µg/L)
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Cobalt in Illinois
Ranked by max detected (µg/L)
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Lithium in Illinois
Ranked by max detected (µg/L)
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NDMA in Illinois
Ranked by max detected (ng/L)
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Perchlorate in Illinois
Ranked by max detected (µg/L)
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All states

Lead in drinking water by state

AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming
← Lead contamination overview Explore Illinois water quality → National Lead map →