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Indiana Water Quality Report

402 cities tested · Average grade: B · 4.7M people served

Cities Tested
402
Avg Score
78.7
Population Served
4.7M
Avg Grade
B
Live Water Alerts for Indiana →
Analysis

Indiana water quality overview

Indiana's drinking water quality is good overall, with an average score of 78.7 out of 100 across 402 cities tested. The median score is 82.6, serving a total population of 4,745,626 residents. 81% of cities earned an A or B grade, indicating broadly strong water quality infrastructure across the state. PFAS "forever chemicals" were detected in 77 of 402 cities tested (19%). 19 cities exceed the 2024 EPA maximum contaminant levels. 7 cities have lead levels exceeding the EPA action level of 15 ppb, often indicating aging infrastructure with lead service lines or lead solder. The state relies on a mix of water sources: 329 cities use groundwater while 73 draw from surface water such as rivers, lakes, and reservoirs.

Key Concerns

Issues to watch in Indiana

77 cities
PFAS Detected
19% of tested cities have PFAS in their water supply.
7 cities
Lead Exceedances
Lead levels above the EPA action level of 15 ppb (90th percentile).
294 cities
Health Violations
27,481 total violations recorded, 391 with unresolved issues.
8 cities
Failing Systems
Received a grade of F, indicating serious water quality issues.
Contaminant Data

Explore contaminants in Indiana

Lead in Indiana → Ranked by 90th percentile level (ppb) PFAS in Indiana → Ranked by compounds detected Copper in Indiana → Ranked by 90th percentile level (mg/L)

More contaminants tested in Indiana

HAA5 → Chromium-6 → Arsenic → Nitrate → Strontium → 1,4-Dioxane → Manganese → Vanadium → Chlorate → Molybdenum → Lithium → NDMA →
State context
40
Superfund sites in Indiana
EPA National Priorities List
92.4%
of Indiana residents on fluoridated water
CDC, 2020
11,045,637
lbs released to surface water
Top 10 TRI facilities, 2023
22.6%
of Indiana domestic wells exceed EPA arsenic limit
USGS, 602 samples · 10 µg/L MCL
Domestic well chemistry

Private-well water in Indiana

Based on USGS Powell Domestic-Well Database — 1,053 private wells sampled across Indiana. These wells are not regulated by the EPA; if you draw your tap from a private well, the public-system grade above does not apply to you.

4.8 µg/L
Median arsenic in domestic wells
P90 17.9 µg/L · max 155.0 µg/L
89 µg/L
Median manganese in domestic wells
19.6% exceed 300 µg/L aesthetic limit
Industrial pollution

Top industrial water polluters in Indiana

Industrial polluters nearby

The 10 facilities reporting the most pounds released to surface water in Indiana, 2023.

Total reported releases to surface water: 11,045,637 lbs

FacilityTop chemicalTo surface water (lbs/yr)
CLEVELAND-CLIFFS STEEL CORP (ROCKPORT WORKS )
Primary Metals · CLEVELAND-CLIFFS INC
ROCKPORT, IN47635
Nitrate compounds (water dissociable; reportable only when in aqueous solution)8,138,806
BP PRODUCTS NA WHITING BUSINESS UNIT
Petroleum · BP AMERICA INC
WHITING, IN46394
Nitrate compounds (water dissociable; reportable only when in aqueous solution)1,002,622
SABIC INNOVATIVE PLASTICS MT. VERNON LLC
Chemicals · SABIC US HOLDINGS LP
MOUNT VERNON, IN47620
Nitrate compounds (water dissociable; reportable only when in aqueous solution)772,134
EVONIK CORP TIPPECANOE LABORATORIES
Chemicals · EVONIK CORP
LAFAYETTE, IN47909
Nitrate compounds (water dissociable; reportable only when in aqueous solution)309,271
CLEVELAND-CLIFFS STEEL LLC
Primary Metals · CLEVELAND-CLIFFS INC
EAST CHICAGO, IN46312
Nitrate compounds (water dissociable; reportable only when in aqueous solution)250,142

+ 5 more facilities

Source: EPA Toxic Release Inventory (TRI) 2023

Test your own tap

Get your Indiana water tested

City-level data shows the source and infrastructure picture — but lead and other home-plumbing issues only show up at your tap. Find a state-certified lab, see what to test for, and what it costs.
Grade Distribution

How Indiana cities scored

A: 155 B: 171 C: 41 D: 27 F: 8

Best Cities

  1. A+ Winchester 99.8
  2. A+ Flora 96.8
  3. A+ Waynetown 96.2

Worst Cities

  1. F Cedar Lake 36.8
  2. F Lafayette 37.1
  3. F South Bend 39.3
City Map

Water quality across Indiana

Each dot is a city, colored by its water quality grade. Size reflects population served. Click any city to view its full water report.

All Cities

402 cities in Indiana

Full rankings →
# City Grade Score Population Violations
1 Winchester A+
99.8
5K 2
2 Flora A+
96.8
2K 4
3 Waynetown A+
96.2
953 3
4 Veedersburg A+
95.5
2K 28
5 Boonville A+
95.1
10K 30
6 Camden A
94.9
611 2
7 Wanatah A
94.5
1K 5
8 St. John A
94.2
26K 34
9 Edinburgh A
94.2
4K 6
10 St. Mary-Of-The-Woods A
93.8
900 16
11 Napoleon A
93.7
6K 9
12 Fairview Park A
93.7
1K 11
13 Paxton A
93.6
2K 13
14 Portland A
93.5
6K 34
15 Bunker Hill A
93.3
900 15
16 Ingalls A
93
8K 89
17 Rockville A
93
4K 41
18 Gary A
92.9
211K 11
19 North Salem A
92.9
515 15
20 Darlington A
92.8
860 4
21 Jamestown A
92.7
1K 25
22 Winamac A
92.4
2K 13
23 Kouts A
92.3
2K 85
24 Sheridan A
92.2
4K 5
25 Medora A
92.1
873 14
26 Summitville A
92
1K 1
27 Chesterton A
92
500 37
28 Orleans A
91.8
2K 15
29 Monroe A
91.8
872 4
30 Ramsey A
91.5
16K 8
31 Alexandria A
91.5
5K 36
32 Owensville A
91.5
2K 4
33 Topeka A
91.5
1K 8
34 Dubois A
91.1
23K 19
35 Corydon A
91
15K 44
36 Bluffton A
91
10K 10
37 Berne A
91
4K 8
38 Farmersburg A
91
2K 14
39 Greenwood A
90.9
87K 1
40 Highland (Highlands) A
90.9
24K 7
41 Pennville A
90.9
706 44
42 West Baden Springs (Corporate A
90.8
3K 24
43 Cayuga A
90.7
1K 81
44 Linton A
90.6
10K 30
45 Nappanee A
90.6
7K 4
46 Marion A
90.5
28K 9
47 Knox A
90.5
4K 30
48 Rising Sun A
90.5
2K 5
49 West Harrison A
90.4
6K 5
50 Colfax A
90.3
690 16
51 Markle A
90.2
1K 49
52 Hymera A
90.1
984 13
53 Newburgh A
90
22K 70
54 Batesville A
90
7K 29
55 Attica A-
89.9
3K 44
56 Vincennes A-
89.8
22K 34
57 Waterloo A-
89.7
2K 3
58 Rochester A-
89.6
6K 34
59 Avilla A-
89.5
3K 4
60 North Liberty A-
89.5
2K 40
61 Montpelier A-
89.5
2K 26
62 Floyds Knobs A-
89.4
6K 6
63 Ossian A-
89.4
4K 75
64 Holland A-
89.4
1K 82
65 Gosport A-
89.4
849 15
66 Brookville A-
89.3
11K 14
67 Wakarusa A-
89.3
2K 21
68 Roachdale A-
89.3
980 14
69 Montgomery A-
89.2
900 8
70 Woodburn A-
89.1
2K 120
71 Ashley (Rr Name Ashley-Hudson) A-
89
983 12
72 Royal Center A-
89
861 24
73 Chrisney A-
89
823 48
74 Paragon A-
89
663 46
75 Galena A-
88.9
5K 18
76 Mentone A-
88.9
1K 132
77 Holton A-
88.8
2K 12
78 Spiceland A-
88.8
969 11
79 Hope A-
88.7
2K 32
80 Kingsford Heights A-
88.7
2K 13
81 New Harmony A-
88.7
2K 38
82 Advance A-
88.7
500 16
83 Palmyra A-
88.6
4K 26
84 Pimento A-
88.6
3K 11
85 Sullivan A-
88.6
924 7
86 West Lebanon A-
88.6
723 76
87 Kewanna A-
88.6
678 19
88 Lakeville A-
88.5
750 12
89 Otterbein A-
88.4
1K 13
90 Long Beach A-
88.3
2K 133
91 North Judson A-
88.3
2K 29
92 Chesterfield A-
88.2
3K 9
93 Kentland A-
88.1
2K 24
94 Tennyson A-
88
4K 10
95 Loogootee A-
88
3K 63
96 St. Anthony A-
88
2K 2
97 Wolcott A-
88
1K 26
98 Jasper A-
87.9
17K 56
99 Middletown A-
87.8
2K 20
100 St. Bernice A-
87.8
750 25
101 Huntertown A-
87.7
14K 20
102 Walton A-
87.7
1K 17
103 Ellettsville A-
87.6
15K 12
104 Brazil A-
87.6
12K 17
105 Carthage A-
87.6
1K 54
106 Eaton A-
87.5
2K 14
107 Canaan A-
87.3
4K 4
108 Paoli A-
87.3
4K 148
109 Bourbon A-
87.3
2K 9
110 Dyer A-
87.2
17K 6
111 Jasonville A-
87.2
4K 29
112 Upland A-
87.2
3K 12
113 Dillsboro A-
87.2
2K 5
114 Sunman A-
87.2
1K 58
115 Walkerton A-
87.1
2K 71
116 Brownsburg A-
87
24K 27
117 Ireland A-
87
4K 3
118 Poland A-
87
3K 8
119 Camby A-
87
3K 5
120 Silver Lake A-
87
1K 23
121 Elnora A-
87
620 45
122 Francisco A-
86.9
900 19
123 Donaldson A-
86.9
680 70
124 West Lafayette A-
86.8
50K 28
125 Albany A-
86.8
2K 24
126 Waldron A-
86.8
800 79
127 Millersburg A-
86.7
957 15
128 Ligonier A-
86.6
5K 61
129 Petersburg A-
86.5
4K 8
130 Hardinsburg A-
86.5
4K 16
131 Covington A-
86.5
3K 3
132 Gentryville A-
86.3
2K 11
133 Arcadia A-
86.3
2K 14
134 Trafalgar A-
86.2
1K 15
135 Monroeville A-
86.2
1K 35
136 Shipshewana A-
86.2
703 109
137 Orland A-
86.2
530 14
138 Hobart A-
86.1
6K 17
139 Elberfeld A-
86.1
2K 7
140 Osgood A-
86.1
2K 20
141 Fortville A-
86
8K 11
142 Tipton A-
86
5K 6
143 Cromwell A-
86
1K 109
144 Milton A-
85.8
650 17
145 Taylorsville A-
85.6
14K 42
146 Marysville A-
85.5
7K 14
147 Odon A-
85.5
2K 10
148 St. Meinrad A-
85.5
658 4
149 Evansville A-
85.2
195K 36
150 Hammond A-
85.2
78K 19
151 New Palestine A-
85.2
2K 71
152 Roanoke A-
85.1
2K 17
153 Dale A-
85.1
2K 35
154 Dublin A-
85
790 145
155 Cynthiana A-
85
699 8
156 Culver B+
84.9
3K 84
157 Reelsville B+
84.9
3K 4
158 Auburn B+
84.8
13K 3
159 Waveland B+
84.8
605 182
160 Charlestown B+
84.7
9K 45
161 North Manchester B+
84.7
6K 114
162 Whiting B+
84.7
5K 29
163 Santa Claus B+
84.7
4K 44
164 South Whitley B+
84.7
2K 15
165 Cannelton B+
84.6
2K 42
166 Akron B+
84.6
1K 46
167 Kendallville B+
84.5
10K 7
168 Bargersville B+
84.4
34K 13
169 Vevay B+
84.4
2K 22
170 Geneva B+
84.4
1K 43
171 Redkey B+
84.4
1K 226
172 Edinburg B+
84.3
5K 59
173 Rockport B+
84.2
3K 134
174 Brook B+
84.2
1K 59
175 Hillsboro B+
84.2
540 52
176 Nashville B+
84
3K 19
177 Brookston B+
84
2K 5
178 Elwood B+
83.8
9K 10
179 Hartford City B+
83.8
6K 38
180 Butler B+
83.8
3K 30
181 Rossville B+
83.8
2K 38
182 Galveston B+
83.8
1K 13
183 Pittsboro B+
83.6
4K 15
184 Ladoga B+
83.6
1K 16
185 Campbellsburg B+
83.6
900 15
186 Rushville B+
83.5
7K 25
187 Monroe City B+
83.5
813 15
188 Henryville B+
83.4
8K 15
189 Fowler B+
83.4
2K 17
190 Leo B+
83.3
2K 45
191 Harlan B+
83.3
2K 21
192 Mulberry B+
83.3
1K 10
193 Shirley B+
83.1
960 11
194 Greentown B+
82.9
3K 116
195 Richland City B+
82.8
4K 26
196 Mecca B+
82.8
905 164
197 Hamlet B+
82.8
801 15
198 New Haven B+
82.7
16K 19
199 Knightstown B+
82.7
2K 91
200 Oxford B+
82.7
1K 20
201 Milltown B+
82.6
2K 15
202 Birdseye B+
82.6
972 32
203 Centerville B+
82.5
3K 22
204 Dayton B+
82.5
1K 10
205 Lawrenceburg B+
82.4
21K 44
206 Spencer B+
82.4
10K 8
207 Cloverdale B+
82.3
2K 7
208 Gaston B+
82.3
838 38
209 Cambridge City B+
82.1
2K 29
210 Danville B+
82
11K 4
211 Frankton B+
81.8
2K 29
212 Warren B+
81.8
2K 28
213 Daleville B+
81.7
2K 49
214 Bloomfield B+
81.6
19K 58
215 Hamilton B+
81.6
3K 7
216 New Goshen B+
81.6
2K 61
217 Chalmers B+
81.2
550 14
218 Munster B+
81
24K 12
219 Milroy B+
81
900 10
220 Carbon B+
80.7
1K 13
221 Carlisle B+
80.6
3K 12
222 Troy B+
80.6
1K 43
223 Hanover B+
80.5
4K 15
224 Clarks Hill B+
80.5
660 20
225 Princeton B+
80.4
11K 16
226 Pendleton B+
80.4
6K 22
227 Middlebury B+
80.4
3K 74
228 Ridgeville B+
80.4
825 62
229 Lebanon B+
80.2
16K 11
230 Lowell B+
80.2
12K 127
231 Georgetown B+
80.2
10K 131
232 Thorntown B+
80.2
2K 21
233 Boswell B+
80.2
750 95
234 New Castle B+
80.1
20K 70
235 Borden B+
80.1
12K 112
236 Whiteland B+
80.1
6K 18
237 Brownstown B+
80
14K 199
238 Syracuse B+
80
3K 107
239 Grandview (Grand View) B+
80
765 41
240 Knightsville B
79.9
2K 12
241 Argos B
79.8
2K 32
242 Bicknell B
79.7
4K 68
243 Kirklin B
79.6
788 22
244 Clinton B
79.5
7K 182
245 Dunkirk B
79.4
2K 11
246 Patoka B
79.4
750 65
247 Goodland B
79.3
990 25
248 Carmel B
79.1
100K 118
249 Shelburn B
79.1
3K 58
250 Otwell B
79
3K 24
251 Etna Green B
78.9
663 168
252 Staunton B
78.8
550 42
253 Franklin B
78.6
654 20
254 Frankfort B
78.5
17K 87
255 Union City B
78.5
5K 15
256 Bremen B
78.3
5K 25
257 Rensselaer B
78
6K 45
258 Shoals B
78
3K 29
259 Oaktown B
78
832 44
260 Ferdinand B
77.9
6K 50
261 Oakland City B
77.8
3K 125
262 Crothersville B
77.8
2K 60
263 Griffith B
77.7
17K 31
264 Notre Dame B
77.6
10K 34
265 Oakland City Junction B
77.5
10K 18
266 Grabill B
77.5
1K 30
267 Elizabeth B
77.4
4K 29
268 Demotte B
77.3
4K 31
269 Fort Branch B
77.3
4K 52
270 Lawrence B
77.2
49K 20
271 Anderson B
77.1
61K 57
272 Crane B
77
7K 56
273 Hillsdale B
77
735 32
274 La Fontaine B
76.8
906 22
275 Howe B
76.8
653 136
276 Scottsburg B
76.6
7K 77
277 Liberty B
76.6
2K 107
278 New Market B
76.6
765 17
279 Fremont B
76.3
2K 27
280 Mooresville B
76.1
8K 19
281 English B
76.1
886 24
282 Jeffersonville B
75.9
16K 130
283 Ogden Dunes (Wickliffe) B
75.9
1K 16
284 Center Point B
75.8
625 46
285 Richmond B
75.7
41K 47
286 Dupont B
75.7
4K 25
287 Morristown B
75.5
1K 63
288 Elkhart B
75.4
46K 92
289 Nineveh B
75.3
8K 78
290 Lapel B
75.3
2K 48
291 Wolcottville B
75.3
1K 15
292 Gas City B
75.2
6K 22
293 Converse B
75.2
1K 43
294 Washington B
75
22K 13
295 Garrett B
75
7K 37
296 Hebron B-
75
4K 213
297 Van Buren B
75
864 27
298 Milan B-
74.5
11K 57
299 Yorktown B-
74.5
6K 74
300 Francesville B-
74.5
969 57
301 Patriot B-
74.4
12K 132
302 Huntingburg B-
74.3
7K 97
303 New Washington B-
74.1
4K 46
304 Brooklyn B-
74
2K 54
305 Bainbridge B-
74
830 10
306 Mount Vernon B-
73.9
6K 184
307 Parker City B-
73.9
1K 14
308 Clay City B-
73.5
1K 27
309 Columbus B-
73.3
60K 45
310 Lynn B-
73
1K 19
311 Windfall B-
72.9
708 61
312 Crown Point B-
72.7
30K 39
313 East Chicago B-
72.5
26K 59
314 Jonesboro B-
72.5
2K 33
315 Battle Ground B-
72.4
2K 9
316 Seymour B-
72.2
2K 38
317 Farmland B-
72.2
1K 46
318 Merrillville B-
72.1
211K 114
319 Tell City B-
72.1
14K 102
320 Greenfield B-
71.5
27K 138
321 Haubstadt B-
71.5
6K 40
322 Bedford B-
71.2
34K 84
323 Poseyville B-
71.2
1K 20
324 Dugger B-
71.1
2K 15
325 Plainfield B-
70.2
39K 68
326 Mitchell B-
70.2
11K 143
327 Lanesville C+
69.8
1K 41
328 Vernon C+
69.4
538 42
329 Lyons C+
69.3
870 148
330 Freelandville C+
69.2
1K 126
331 Lacrosse C+
69.1
540 42
332 West Terre Haute C+
69
4K 67
333 Hagerstown C+
68.8
2K 14
334 Austin C+
68.6
19K 145
335 Morgantown C+
68.4
15K 172
336 Winslow C+
68.2
1K 129
337 Churubusco C+
68.1
2K 181
338 Reynolds C+
68.1
533 119
339 Morocco C+
67.9
1K 21
340 Seelyville C+
67.8
6K 46
341 Atlanta C+
67.8
735 23
342 Dana C+
67.7
660 283
343 Mishawaka C+
67.3
50K 90
344 Connersville C+
66.8
16K 76
345 Delphi C+
66.1
3K 72
346 Indianapolis C+
65.8
882K 208
347 Lynnville C+
65.8
1K 71
348 Madison C+
65.7
17K 121
349 Logansport C
64.2
18K 148
350 Greencastle C
63.2
16K 118
351 Speedway C
63.2
11K 81
352 Fairmount C
62.6
3K 76
353 New Carlisle C
61.9
2K 106
354 Kingman C
61.7
560 79
355 Lagrange C
61.1
3K 47
356 Cicero C
60.7
6K 63
357 Aurora C
60.6
18K 151
358 Medaryville C
60.6
614 47
359 Schererville C-
59.8
30K 54
360 Williamsport C-
59.8
2K 101
361 Remington C-
59.3
1K 28
362 Decatur C-
57.7
10K 152
363 Rosedale C-
57.7
2K 71
364 Swayzee C-
56.7
975 67
365 Valparaiso C-
56.5
38K 220
366 Montezuma C-
56.3
1K 37
367 Albion C-
55.2
2K 164
368 Laporte D+
53.4
23K 102
369 Bristol D+
53.4
2K 226
370 Fountain City D+
53.4
735 59
371 Oolitic D+
53.3
1K 35
372 Monon D+
52
2K 116
373 Hudson D+
51.2
564 59
374 Westport D+
51
1K 112
375 Milford D+
50
2K 150
376 St. Paul D+
50
1K 66
377 Sharpsville D+
50
553 92
378 Fort Wayne D
49.5
270K 138
379 Andrews D
49.5
1K 70
380 Bloomingdale D
49
562 145
381 Linden D
48.9
759 91
382 Columbia City D
48.5
10K 47
383 Plymouth D
48.2
11K 1174
384 Bloomington D
47.3
103K 236
385 North Vernon D
47.2
21K 366
386 Westville D
47
6K 295
387 Pierceton D
47
2K 237
388 Laurel D
47
560 169
389 Salem D
46.5
17K 195
390 Taswell D
46.4
1K 21
391 Goshen D
46.2
32K 315
392 Greensburg D
45.8
18K 237
393 Peru D
45
14K 1859
394 Monticello D
45
6K 764
395 Martinsville F
44.7
27K 155
396 Terre Haute F
43
2K 361
397 Michigan City F
42.9
34K 402
398 Huntington F
42.5
18K 248
399 Angola F
40.2
10K 400
400 South Bend F
39.3
115K 408
401 Lafayette F
37.1
71K 262
402 Cedar Lake F
36.8
5K 880
Counties

Browse Indiana counties

Adams 4 cities · avg 81.2 Allen 8 cities · avg 79.9 Bartholomew 3 cities · avg 82.5 Benton 4 cities · avg 83.7 Blackford 2 cities · avg 86.7 Boone 4 cities · avg 85.5 Brown 2 cities · avg 76.2 Carroll 3 cities · avg 85.9 Cass 4 cities · avg 81.2 Clark 6 cities · avg 80.6 Clay 6 cities · avg 79.4 Clinton 5 cities · avg 83.1 Crawford 3 cities · avg 68.4 Daviess 4 cities · avg 84.2 Dearborn 4 cities · avg 80.2 Decatur 3 cities · avg 48.9 Dekalb 4 cities · avg 83.3 Delaware 5 cities · avg 82.6 Dubois 8 cities · avg 84.8 Elkhart 7 cities · avg 74.6 Fayette 1 city · avg 66.8 Floyd 3 cities · avg 86.2 Fountain 5 cities · avg 83.6 Franklin 2 cities · avg 68.2 Fulton 3 cities · avg 87.6 Gibson 7 cities · avg 80.7 Grant 7 cities · avg 74.2 Greene 4 cities · avg 82.2 Hamilton 5 cities · avg 77.2 Hancock 3 cities · avg 80.9 Harrison 5 cities · avg 83.7 Hendricks 5 cities · avg 83.1 Henry 5 cities · avg 84.5 Howard 1 city · avg 82.9 Huntington 5 cities · avg 69.8 Jackson 4 cities · avg 80.5 Jasper 3 cities · avg 71.5 Jay 4 cities · avg 87.1 Jefferson 3 cities · avg 77.8 Jennings 3 cities · avg 64.1 Johnson 8 cities · avg 84.3 Knox 5 cities · avg 80 Kosciusko 7 cities · avg 74 Lagrange 5 cities · avg 78.2 Lake 15 cities · avg 78.3 Laporte 7 cities · avg 69.1 Lawrence 3 cities · avg 64.9 Madison 9 cities · avg 84.8 Marion 3 cities · avg 68.7 Marshall 6 cities · avg 77.6 Martin 3 cities · avg 81 Miami 3 cities · avg 71.2 Monroe 2 cities · avg 67.4 Montgomery 6 cities · avg 80.5 Morgan 5 cities · avg 74.2 Newton 4 cities · avg 79.9 Noble 4 cities · avg 79 Ohio 1 city · avg 90.5 Orange 3 cities · avg 90 Owen 3 cities · avg 86.3 Parke 5 cities · avg 67.8 Perry 3 cities · avg 79.1 Pike 4 cities · avg 77.8 Porter 5 cities · avg 78.3 Posey 4 cities · avg 79.7 Pulaski 3 cities · avg 75.8 Putnam 5 cities · avg 78.7 Randolph 6 cities · avg 79.6 Ripley 6 cities · avg 86.7 Rush 3 cities · avg 84 Scott 2 cities · avg 72.6 Shelby 2 cities · avg 81.2 Spencer 8 cities · avg 84.7 St. Joseph 7 cities · avg 73 Starke 3 cities · avg 87.2 Steuben 6 cities · avg 70.8 Sullivan 7 cities · avg 84.9 Switzerland 2 cities · avg 79.4 Tippecanoe 5 cities · avg 71.9 Tipton 3 cities · avg 69.6 Union 1 city · avg 76.6 Vanderburgh 1 city · avg 85.2 Vermillion 6 cities · avg 82.7 Vigo 6 cities · avg 74 Wabash 2 cities · avg 80.8 Warren 2 cities · avg 74.2 Warrick 5 cities · avg 85 Washington 3 cities · avg 72.2 Wayne 7 cities · avg 76.2 Wells 2 cities · avg 90.2 White 6 cities · avg 69.7 Whitley 3 cities · avg 67.1
ZIP Codes

Browse Indiana by ZIP code

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FAQ

Frequently asked questions about Indiana's water

Is Indiana's tap water safe to drink?

Indiana's water quality varies by city. The statewide average grade is B (78.7/100). 81% of cities scored an A or B, while 9% received a D or F. Check your specific city for detailed results.

Which Indiana cities have the best water quality?

The top-rated cities are Winchester (A+), Flora (A+), Waynetown (A+). These cities scored highest based on violation history, lead levels, PFAS contamination, and regulatory compliance.

Which Indiana cities have the worst water quality?

The lowest-rated cities are Cedar Lake (F), Lafayette (F), South Bend (F). We recommend residents in these areas consider water filtration and review their city's specific contaminant data.

How many Indiana cities have PFAS in their water?

77 out of 402 cities tested positive for PFAS "forever chemicals" (19%). 19 cities exceed the 2024 EPA maximum contaminant levels. Reverse osmosis or activated carbon filters can help reduce PFAS exposure.

Do any Indiana cities have dangerous lead levels?

7 cities exceed the EPA lead action level of 15 ppb. Lead contamination typically comes from aging pipes and lead service lines rather than the water source itself. An NSF 53-certified filter can effectively remove lead from tap water.

Water quality resources

Guide
How to Read Your Water Quality Report
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Guide
Lead in Drinking Water
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Guide
PFAS Forever Chemicals Explained
Read guide →
News
Latest Water Quality News
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