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Indiana Water Quality Report

414 cities tested · Average grade: B · 5.4M people served

Cities Tested
414
Avg Score
78.1
Population Served
5.4M
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 78.1 out of 100 across 414 cities tested. The median score is 82.4, serving a total population of 5,427,756 residents. 79% of cities earned an A or B grade, indicating broadly strong water quality infrastructure across the state. PFAS "forever chemicals" were detected in 85 of 414 cities tested (21%). 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: 336 cities use groundwater while 78 draw from surface water such as rivers, lakes, and reservoirs.

Key Concerns

Issues to watch in Indiana

85 cities
PFAS Detected
21% 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).
305 cities
Health Violations
30,817 total violations recorded, 403 with unresolved issues.
13 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: 156 B: 173 C: 43 D: 29 F: 13

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

414 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 Merrillville A
93.4
211K 11
16 Bunker Hill A
93.3
900 15
17 Ingalls A
93
8K 89
18 Rockville A
93
4K 41
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
44K 70
54 Batesville A
90
7K 29
55 Attica A-
89.9
3K 44
56 Vincennes A-
89.8
22K 34
57 Leavenworth A-
89.8
3K 14
58 Waterloo A-
89.7
2K 3
59 Rochester A-
89.6
6K 34
60 Avilla A-
89.5
3K 4
61 North Liberty A-
89.5
2K 40
62 Montpelier A-
89.5
2K 26
63 Floyds Knobs A-
89.4
6K 6
64 Ossian A-
89.4
4K 75
65 Holland A-
89.4
1K 82
66 Gosport A-
89.4
849 15
67 Brookville A-
89.3
11K 14
68 Wakarusa A-
89.3
2K 21
69 Roachdale A-
89.3
2K 14
70 Montgomery A-
89.2
900 8
71 Woodburn A-
89.1
2K 120
72 Ashley (Rr Name Ashley-Hudson) A-
89
983 12
73 Royal Center A-
89
861 24
74 Chrisney A-
89
823 48
75 Paragon A-
89
663 46
76 Galena A-
88.9
5K 18
77 Mentone A-
88.9
1K 132
78 Holton A-
88.8
2K 12
79 Spiceland A-
88.8
969 11
80 Hope A-
88.7
2K 32
81 Kingsford Heights A-
88.7
2K 13
82 New Harmony A-
88.7
2K 38
83 Advance A-
88.7
500 16
84 Palmyra A-
88.6
4K 26
85 Pimento A-
88.6
3K 11
86 Sullivan A-
88.6
924 7
87 West Lebanon A-
88.6
723 76
88 Kewanna A-
88.6
678 19
89 Lakeville A-
88.5
750 12
90 Otterbein A-
88.4
1K 13
91 Long Beach A-
88.3
2K 133
92 North Judson A-
88.3
2K 29
93 Chesterfield A-
88.2
3K 9
94 Kentland A-
88.1
2K 24
95 Tennyson A-
88
4K 10
96 Loogootee A-
88
3K 63
97 St. Anthony A-
88
2K 2
98 Wolcott A-
88
1K 26
99 Jasper A-
87.9
17K 56
100 Middletown A-
87.8
2K 20
101 St. Bernice A-
87.8
750 25
102 Huntertown A-
87.7
14K 20
103 Walton A-
87.7
1K 17
104 Ellettsville A-
87.6
15K 12
105 Brazil A-
87.6
12K 17
106 Carthage A-
87.6
1K 54
107 Eaton A-
87.5
2K 14
108 Canaan A-
87.3
4K 4
109 Paoli A-
87.3
4K 148
110 Bourbon A-
87.3
2K 9
111 Dyer A-
87.2
17K 6
112 Jasonville A-
87.2
4K 29
113 Upland A-
87.2
3K 12
114 Dillsboro A-
87.2
2K 5
115 Sunman A-
87.2
1K 58
116 Walkerton A-
87.1
2K 71
117 Brownsburg A-
87
24K 27
118 Ireland A-
87
4K 3
119 Poland A-
87
3K 8
120 Camby A-
87
3K 5
121 Silver Lake A-
87
1K 23
122 Elnora A-
87
620 45
123 Francisco A-
86.9
900 19
124 Donaldson A-
86.9
680 70
125 West Lafayette A-
86.8
86K 28
126 Albany A-
86.8
2K 24
127 Waldron A-
86.8
800 79
128 Millersburg A-
86.7
957 15
129 Ligonier A-
86.6
5K 61
130 Petersburg A-
86.5
4K 8
131 Hardinsburg A-
86.5
4K 16
132 Covington A-
86.5
3K 3
133 Gentryville A-
86.3
2K 11
134 Arcadia A-
86.3
2K 14
135 Trafalgar A-
86.2
1K 15
136 Monroeville A-
86.2
1K 35
137 Shipshewana A-
86.2
918 109
138 Orland A-
86.2
530 14
139 Hobart A-
86.1
6K 17
140 Elberfeld A-
86.1
2K 7
141 Osgood A-
86.1
2K 20
142 Fortville A-
86
8K 11
143 Tipton A-
86
5K 6
144 Cromwell A-
86
1K 109
145 Milton A-
85.8
650 17
146 Taylorsville A-
85.6
14K 42
147 Marysville A-
85.5
7K 14
148 Odon A-
85.5
2K 10
149 St. Meinrad A-
85.5
658 4
150 Evansville A-
85.2
195K 36
151 Hammond A-
85.2
78K 19
152 New Palestine A-
85.2
2K 71
153 Roanoke A-
85.1
2K 17
154 Dale A-
85.1
2K 35
155 Dublin A-
85
790 145
156 Cynthiana A-
85
699 8
157 Culver B+
84.9
3K 84
158 Reelsville B+
84.9
3K 4
159 Auburn B+
84.8
13K 3
160 Waveland B+
84.8
605 182
161 Charlestown B+
84.7
9K 45
162 North Manchester B+
84.7
6K 114
163 Whiting B+
84.7
5K 29
164 Santa Claus B+
84.7
4K 44
165 South Whitley B+
84.7
2K 15
166 Cannelton B+
84.6
2K 42
167 Akron B+
84.6
1K 46
168 Kendallville B+
84.5
10K 7
169 Bargersville B+
84.4
34K 13
170 Vevay B+
84.4
2K 22
171 Geneva B+
84.4
1K 43
172 Redkey B+
84.4
1K 226
173 Edinburg B+
84.3
5K 59
174 Rockport B+
84.2
3K 134
175 Brook B+
84.2
1K 59
176 Hillsboro B+
84.2
540 52
177 Nashville B+
84
3K 19
178 Brookston B+
84
2K 5
179 Elwood B+
83.8
9K 10
180 Hartford City B+
83.8
6K 38
181 Butler B+
83.8
3K 30
182 Rossville B+
83.8
2K 38
183 Galveston B+
83.8
1K 13
184 Pittsboro B+
83.6
4K 15
185 Ladoga B+
83.6
1K 16
186 Campbellsburg B+
83.6
900 15
187 Rushville B+
83.5
7K 25
188 Monroe City B+
83.5
813 15
189 Henryville B+
83.4
8K 15
190 Fowler B+
83.4
2K 17
191 Leo B+
83.3
2K 45
192 Harlan B+
83.3
2K 21
193 Mulberry B+
83.3
1K 10
194 Shirley B+
83.1
960 11
195 Greentown B+
82.9
3K 116
196 Richland City B+
82.8
4K 26
197 Mecca B+
82.8
905 164
198 Hamlet B+
82.8
801 15
199 New Haven B+
82.7
16K 19
200 Knightstown B+
82.7
2K 91
201 Oxford B+
82.7
1K 20
202 Granger B+
82.7
670 56
203 Milltown B+
82.6
2K 15
204 Birdseye B+
82.6
972 32
205 Centerville B+
82.5
3K 22
206 Dayton B+
82.5
1K 10
207 Lawrenceburg B+
82.4
26K 44
208 Spencer B+
82.4
10K 8
209 Cloverdale B+
82.3
2K 7
210 Gaston B+
82.3
838 38
211 Cambridge City B+
82.1
2K 29
212 Danville B+
82
11K 4
213 Frankton B+
81.8
2K 29
214 Warren B+
81.8
2K 28
215 Daleville B+
81.7
2K 49
216 Bloomfield B+
81.6
20K 58
217 Hamilton B+
81.6
3K 7
218 New Goshen B+
81.6
2K 61
219 Chalmers B+
81.2
550 14
220 Munster B+
81
24K 12
221 Milroy B+
81
900 10
222 Carbon B+
80.7
1K 13
223 Carlisle B+
80.6
3K 12
224 Troy B+
80.6
1K 43
225 Hanover B+
80.5
4K 15
226 Clarks Hill B+
80.5
660 20
227 Princeton B+
80.4
11K 16
228 Pendleton B+
80.4
6K 22
229 Middlebury B+
80.4
4K 74
230 Ridgeville B+
80.4
825 62
231 Lebanon B+
80.2
16K 11
232 Georgetown B+
80.2
14K 131
233 Lowell B+
80.2
12K 127
234 Thorntown B+
80.2
2K 21
235 Boswell B+
80.2
750 95
236 New Castle B+
80.1
23K 70
237 Borden B+
80.1
12K 112
238 Whiteland B+
80.1
6K 18
239 Brownstown B+
80
14K 199
240 Syracuse B+
80
3K 107
241 Knightsville B
79.9
2K 12
242 Argos B
79.8
2K 32
243 Bicknell B
79.7
4K 68
244 Kirklin B
79.6
788 22
245 Clinton B
79.5
7K 182
246 Dunkirk B
79.4
2K 11
247 Patoka B
79.4
750 65
248 Goodland B
79.3
990 25
249 Carmel B
79.1
162K 118
250 Shelburn B
79.1
3K 58
251 Grandview (Grand View) B
79
3K 41
252 Otwell B
79
3K 24
253 Etna Green B
78.9
776 168
254 Staunton B
78.8
550 42
255 Franklin B
78.6
654 20
256 Frankfort B
78.5
17K 87
257 Union City B
78.5
5K 15
258 Bremen B
78.3
5K 25
259 Rensselaer B
78
6K 45
260 Shoals B
78
5K 29
261 Oaktown B
78
832 44
262 Ferdinand B
77.9
6K 50
263 Crothersville B
77.8
3K 60
264 Oakland City B
77.8
3K 125
265 Griffith B
77.7
17K 31
266 Notre Dame B
77.6
10K 34
267 Oakland City Junction B
77.5
10K 18
268 Grabill B
77.5
1K 30
269 Elizabeth B
77.4
4K 29
270 Demotte B
77.3
5K 31
271 Fort Branch B
77.3
4K 52
272 Lawrence B
77.2
49K 20
273 Anderson B
77.1
61K 57
274 Crane B
77
7K 56
275 Hillsdale B
77
735 32
276 La Fontaine B
76.8
936 22
277 Howe B
76.8
713 136
278 Scottsburg B
76.6
7K 77
279 Liberty B
76.6
3K 107
280 New Market B
76.6
765 17
281 Fremont B
76.3
2K 27
282 Mooresville B
76.1
19K 19
283 English B
76.1
886 24
284 Russiaville B
76
1K 92
285 Jeffersonville B
75.9
136K 130
286 Ogden Dunes (Wickliffe) B
75.9
1K 16
287 Center Point B
75.8
670 46
288 Richmond B
75.7
42K 47
289 Dupont B
75.7
4K 25
290 Morristown B
75.5
1K 63
291 Elkhart B
75.4
47K 92
292 Nineveh B
75.3
8K 78
293 Lapel B
75.3
2K 48
294 Wolcottville B
75.3
1K 15
295 Gas City B
75.2
6K 22
296 Converse B
75.2
1K 43
297 Washington B
75
22K 13
298 Garrett B
75
7K 37
299 Hebron B-
75
4K 213
300 Van Buren B
75
864 27
301 Milan B-
74.5
11K 57
302 Yorktown B-
74.5
6K 74
303 Francesville B-
74.5
969 57
304 Patriot B-
74.4
12K 132
305 Huntingburg B-
74.3
7K 97
306 New Washington B-
74.1
4K 46
307 Brooklyn B-
74
2K 54
308 Bainbridge B-
74
830 10
309 Mount Vernon B-
73.9
6K 184
310 Parker City B-
73.9
1K 14
311 Clay City B-
73.5
1K 27
312 Columbus B-
73.3
60K 45
313 Lynn B-
73
1K 19
314 Windfall B-
72.9
708 61
315 Crown Point B-
72.7
38K 39
316 East Chicago B-
72.5
26K 59
317 Jonesboro B-
72.5
2K 33
318 Battle Ground B-
72.4
2K 9
319 Seymour B-
72.2
22K 38
320 Farmland B-
72.2
1K 46
321 Merrillville B-
72.1
215K 114
322 Tell City B-
72.1
14K 102
323 Greenfield B-
71.5
27K 138
324 Haubstadt B-
71.5
6K 40
325 Bedford B-
71.2
34K 84
326 Poseyville B-
71.2
1K 20
327 Dugger B-
71.1
2K 15
328 Plainfield B-
70.2
39K 68
329 Mitchell B-
70.2
11K 143
330 Lanesville C+
69.8
1K 41
331 Newport C+
69.8
630 36
332 Vernon C+
69.4
538 42
333 Lyons C+
69.3
870 148
334 Shelbyville C+
69.2
19K 138
335 Freelandville C+
69.2
1K 126
336 Lacrosse C+
69.1
540 42
337 West Terre Haute C+
69
4K 67
338 Hagerstown C+
68.8
2K 14
339 Austin C+
68.6
19K 145
340 Morgantown C+
68.4
16K 172
341 Winslow C+
68.2
1K 129
342 Churubusco C+
68.1
2K 181
343 Reynolds C+
68.1
581 119
344 Morocco C+
67.9
1K 21
345 Seelyville C+
67.8
6K 46
346 Atlanta C+
67.8
735 23
347 Dana C+
67.7
660 283
348 Mishawaka C+
67.3
50K 90
349 Connersville C+
66.8
16K 76
350 Delphi C+
66.1
3K 72
351 Indianapolis C+
65.8
882K 208
352 Lynnville C+
65.8
1K 71
353 Madison C+
65.7
25K 121
354 Logansport C
64.2
19K 148
355 Greencastle C
63.2
18K 118
356 Speedway C
63.2
11K 81
357 Fairmount C
62.6
3K 76
358 New Carlisle C
61.9
2K 106
359 Kingman C
61.7
560 79
360 Lagrange C
61.1
3K 47
361 Cicero C
60.7
6K 63
362 Aurora C
60.6
18K 151
363 Medaryville C
60.6
614 47
364 Schererville C-
59.8
31K 54
365 Williamsport C-
59.8
2K 101
366 Remington C-
59.3
1K 28
367 Decatur C-
57.7
10K 152
368 Rosedale C-
57.7
2K 71
369 Swayzee C-
56.7
975 67
370 Valparaiso C-
56.5
39K 220
371 Montezuma C-
56.3
1K 37
372 Albion C-
55.2
3K 164
373 Laporte D+
53.4
23K 102
374 Bristol D+
53.4
4K 226
375 Fountain City D+
53.4
770 59
376 Oolitic D+
53.3
1K 35
377 Monon D+
52
2K 116
378 Hudson D+
51.2
564 59
379 Westport D+
51
1K 112
380 Milford D+
50
2K 150
381 St. Paul D+
50
1K 66
382 Sharpsville D+
50
553 92
383 Fort Wayne D
49.5
271K 138
384 Andrews D
49.5
1K 70
385 Bloomingdale D
49
562 145
386 Linden D
48.9
759 91
387 Columbia City D
48.5
10K 47
388 Plymouth D
48.2
11K 1174
389 Bloomington D
47.3
112K 236
390 North Vernon D
47.2
21K 366
391 Westville D
47
8K 295
392 Pierceton D
47
2K 237
393 Noblesville D
46.8
46K 361
394 Salem D
46.5
19K 195
395 Taswell D
46.4
1K 21
396 Goshen D
46.2
33K 315
397 Muncie D
46
75K 150
398 Laurel D
46
1K 169
399 Greensburg D
45.8
18K 237
400 Peru D
45
15K 1859
401 Monticello D
45
6K 764
402 Crawfordsville F
44.8
16K 377
403 Martinsville F
44.7
33K 155
404 Wabash F
44
13K 257
405 Kokomo F
43.1
61K 596
406 Terre Haute F
43
76K 361
407 Michigan City F
42.9
35K 402
408 Warsaw F
42.9
17K 943
409 Huntington F
42.5
18K 248
410 Angola F
40.2
11K 400
411 Zionsville F
40
6K 316
412 South Bend F
39.3
115K 408
413 Lafayette F
37.1
72K 262
414 Cedar Lake F
36.8
6K 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 5 cities · avg 76.4 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 4 cities · avg 73.7 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 6 cities · avg 76.5 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 67.7 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 6 cities · avg 72.1 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 3 cities · avg 67.3 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 8 cities · avg 70.1 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 7 cities · avg 75.4 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 3 cities · avg 77.2 Spencer 8 cities · avg 84.6 St. Joseph 8 cities · avg 74.2 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 7 cities · avg 80.9 Vigo 6 cities · avg 74 Wabash 3 cities · avg 68.5 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

Look up water quality by ZIP code to find the systems serving your area.

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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 (78.1/100). 79% of cities scored an A or B, while 10% 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?

85 out of 414 cities tested positive for PFAS "forever chemicals" (21%). 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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