PFAS Detections in Illinois ZIP Codes — 2026

Out of 370 ZIP codes with data in Illinois, these are the highest-ranked areas for pfas status. See also: National ZIP Codes with PFAS Detections in Water | All Illinois Rankings

Statistic	Value
ZIP codes ranked	370
Highest value	0.2 ppt
Median value	0.0 ppt
State	Illinois

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	PFAS Status	Safety Score
1	62656	Lincoln	IL	0.2 ppt	59/100
2	61401	Galesburg	IL	0.1 ppt	52/100
3	61410	Abingdon	IL	0.1 ppt	68/100
4	61430	East Galesburg	IL	0.1 ppt	64/100
5	61439	Henderson	IL	0.1 ppt	66/100
6	61448	Knoxville	IL	0.1 ppt	60/100
7	61453	Little York	IL	0.1 ppt	40/100
8	60403	Crest Hill	IL	0.1 ppt	72/100
9	61425	Carman	IL	0.0 ppt	35/100
10	61454	Lomax	IL	0.0 ppt	53/100
11	61469	Oquawka	IL	0.0 ppt	57/100
12	62010	Bethalto	IL	0.0 ppt	78/100
13	62025	Edwardsville	IL	0.0 ppt	72/100
14	62084	Roxana	IL	0.0 ppt	77/100
15	62097	Worden	IL	0.0 ppt	81/100
16	61244	East Moline	IL	0.0 ppt	26/100
17	62012	Brighton	IL	0.0 ppt	80/100
18	62035	Godfrey	IL	0.0 ppt	52/100
19	62260	Millstadt	IL	0.0 ppt	75/100
20	61265	Moline	IL	0.0 ppt	54/100
21	62234	Collinsville	IL	0.0 ppt	61/100
22	60440	Bolingbrook	IL	0.0 ppt	73/100
23	60446	Romeoville	IL	0.0 ppt	83/100
24	60544	Plainfield	IL	0.0 ppt	67/100
25	62040	Granite City	IL	0.0 ppt	66/100
26	62095	Wood River	IL	0.0 ppt	63/100
27	62031	Fieldon	IL	0.0 ppt	48/100
28	62052	Jerseyville	IL	0.0 ppt	59/100
29	61011	Caledonia	IL	0.0 ppt	40/100
30	61073	Roscoe	IL	0.0 ppt	55/100
31	61103	Rockford	IL	0.0 ppt	33/100
32	61111	Loves Park	IL	0.0 ppt	55/100
33	61115	Machesney Park	IL	0.0 ppt	54/100
34	62034	Glen Carbon	IL	0.0 ppt	75/100
35	62059	Lovejoy	IL	0.0 ppt	63/100
36	62060	Madison	IL	0.0 ppt	55/100
37	62071	National Stock Yards	IL	0.0 ppt	53/100
38	62090	Venice	IL	0.0 ppt	55/100
39	62201	East Saint Louis	IL	0.0 ppt	50/100
40	62202	East Saint Louis	IL	0.0 ppt	53/100
41	62203	East Saint Louis	IL	0.0 ppt	45/100
42	62204	East Saint Louis	IL	0.0 ppt	50/100
43	62205	East Saint Louis	IL	0.0 ppt	50/100
44	62206	East Saint Louis	IL	0.0 ppt	50/100
45	62207	East Saint Louis	IL	0.0 ppt	50/100
46	62208	Fairview Heights	IL	0.0 ppt	55/100
47	62220	Belleville	IL	0.0 ppt	76/100
48	62221	Belleville	IL	0.0 ppt	76/100
49	62222	Belleville	IL	0.0 ppt	81/100
50	62223	Belleville	IL	0.0 ppt	76/100
51	62225	Scott Air Force Base	IL	0.0 ppt	83/100
52	62226	Belleville	IL	0.0 ppt	76/100
53	62232	Caseyville	IL	0.0 ppt	63/100
54	62236	Columbia	IL	0.0 ppt	61/100
55	62239	Dupo	IL	0.0 ppt	69/100
56	62240	East Carondelet	IL	0.0 ppt	65/100
57	62269	O Fallon	IL	0.0 ppt	76/100
58	62285	Smithton	IL	0.0 ppt	68/100
59	62298	Waterloo	IL	0.0 ppt	74/100
60	62002	Alton	IL	0.0 ppt	71/100
61	62018	Cottage Hills	IL	0.0 ppt	55/100
62	62022	Dow	IL	0.0 ppt	45/100
63	62028	Elsah	IL	0.0 ppt	60/100
64	62037	Grafton	IL	0.0 ppt	35/100
65	60410	Channahon	IL	0.0 ppt	52/100
66	60447	Minooka	IL	0.0 ppt	60/100
67	61603	Peoria	IL	0.0 ppt	32/100
68	61614	Peoria	IL	0.0 ppt	22/100
69	61616	Peoria Heights	IL	0.0 ppt	39/100
70	62024	East Alton	IL	0.0 ppt	76/100
71	61201	Rock Island	IL	0.0 ppt	53/100
72	61299	Rock Island	IL	0.0 ppt	58/100
73	62006	Batchtown	IL	0.0 ppt	74/100
74	60050	Mchenry	IL	0.0 ppt	66/100
75	61032	Freeport	IL	0.0 ppt	56/100
76	61604	Peoria	IL	0.0 ppt	22/100
77	62001	Alhambra	IL	0.0 ppt	83/100
78	62046	Hamel	IL	0.0 ppt	68/100
79	62058	Livingston	IL	0.0 ppt	83/100
80	62061	Marine	IL	0.0 ppt	81/100
81	62074	New Douglas	IL	0.0 ppt	71/100
82	62246	Greenville	IL	0.0 ppt	60/100
83	62249	Highland	IL	0.0 ppt	79/100
84	62275	Pocahontas	IL	0.0 ppt	78/100
85	62281	Saint Jacob	IL	0.0 ppt	71/100
86	62284	Smithboro	IL	0.0 ppt	53/100
87	62294	Troy	IL	0.0 ppt	60/100
88	62301	Quincy	IL	0.0 ppt	56/100
89	62305	Quincy	IL	0.0 ppt	56/100
90	61427	Cuba	IL	0.0 ppt	60/100
91	61520	Canton	IL	0.0 ppt	61/100
92	62254	Lebanon	IL	0.0 ppt	78/100
93	62621	Bluffs	IL	0.0 ppt	65/100
94	62650	Jacksonville	IL	0.0 ppt	45/100
95	62694	Winchester	IL	0.0 ppt	62/100
96	60013	Cary	IL	0.0 ppt	71/100
97	61072	Rockton	IL	0.0 ppt	64/100
98	62341	Hamilton	IL	0.0 ppt	37/100
99	62354	Nauvoo	IL	0.0 ppt	64/100
100	62358	Niota	IL	0.0 ppt	40/100

Methodology

PFAS detection data comes from EPA UCMR5 monitoring, state-level testing programs, and Consumer Confidence Reports. ZIP codes are ranked by maximum PFAS concentration detected. The EPA has set MCLs of 4 ppt for PFOA and PFOS individually. PFAS are persistent chemicals that do not break down in the environment.

Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-06-04.

Frequently Asked Questions

What are PFAS?

PFAS (per- and polyfluoroalkyl substances) are synthetic chemicals used in non-stick coatings, firefighting foam, and food packaging since the 1940s. They are called "forever chemicals" because they do not break down naturally. PFAS are linked to cancer, liver damage, thyroid disease, and immune system suppression.

How can I remove PFAS from my water?

Reverse osmosis (RO) and granular activated carbon (GAC) filters are effective at removing most PFAS from drinking water. NSF/ANSI 53 or 58 certified filters are recommended. Boiling water does NOT remove PFAS.