WaterVerge
Alerts Cities States PFAS Tracker Guides News Maps Glossary Methodology

Missouri Water Quality Report

509 cities tested · Average grade: B · 6.2M people served

Cities Tested
509
Avg Score
78.7
Population Served
6.2M
Avg Grade
B
Live Water Alerts for Missouri →
Analysis

Missouri water quality overview

Missouri's drinking water quality is good overall, with an average score of 78.7 out of 100 across 509 cities tested. The median score is 84, serving a total population of 6,210,626 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 137 of 509 cities tested (27%). 11 cities exceed the 2024 EPA maximum contaminant levels. The state relies on a mix of water sources: 382 cities use groundwater while 125 draw from surface water such as rivers, lakes, and reservoirs.

Key Concerns

Issues to watch in Missouri

137 cities
PFAS Detected
27% of tested cities have PFAS in their water supply.
426 cities
Health Violations
44,938 total violations recorded, 499 with unresolved issues.
15 cities
Failing Systems
Received a grade of F, indicating serious water quality issues.
Contaminant Data

Explore contaminants in Missouri

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

More contaminants tested in Missouri

HAA5 → Chromium-6 → Arsenic → Nitrate → Strontium → 1,4-Dioxane → Manganese → Vanadium → Chlorate → Molybdenum → Cobalt → Lithium → NDMA →
State context
33
Superfund sites in Missouri
EPA National Priorities List
72.2%
of Missouri residents on fluoridated water
CDC, 2020
1,903,430
lbs released to surface water
Top 10 TRI facilities, 2023
26.0%
of Missouri domestic wells exceed EPA arsenic limit
USGS, 2,197 samples · 10 µg/L MCL
Domestic well chemistry

Private-well water in Missouri

Based on USGS Powell Domestic-Well Database — 2,504 private wells sampled across Missouri. 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.

3.7 µg/L
Median arsenic in domestic wells
P90 33.8 µg/L · max 240.0 µg/L
437 µg/L
Median manganese in domestic wells
61.2% exceed 300 µg/L aesthetic limit
Industrial pollution

Top industrial water polluters in Missouri

Industrial polluters nearby

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

Total reported releases to surface water: 1,903,430 lbs

FacilityTop chemicalTo surface water (lbs/yr)
TYSON POULTRY INC. - PROCESSING PLANT
Food · TYSON FOODS INC
SEDALIA, MO65301
Nitrate compounds (water dissociable; reportable only when in aqueous solution)923,987
BIOKYOWA INC
Food · NA
CAPE GIRARDEAU, MO63701
Nitrate compounds (water dissociable; reportable only when in aqueous solution)346,907
SMITHFIELD FRESH MEATS CORP - MILAN MO
Food · UNITED GLOBAL FOODS US HOLDINGS INC
MILAN, MO63556
Nitrate compounds (water dissociable; reportable only when in aqueous solution)341,370
BASF CORP - HANNIBAL SITE
Chemicals · BASF CORP
PALMYRA, MO63461
Nitrate compounds (water dissociable; reportable only when in aqueous solution)161,879
BAYER CROPSCIENCE LP - KC
Chemicals · BAYER US HOLDING LP
KANSAS CITY, MO64120
n-Butyl alcohol58,759

+ 5 more facilities

Source: EPA Toxic Release Inventory (TRI) 2023

Test your own tap

Get your Missouri 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 Missouri cities scored

A: 228 B: 176 C: 50 D: 40 F: 15

Best Cities

  1. A+ Cosby 98.2
  2. A+ Shelbyville 97.4
  3. A+ Fairfax 96.9

Worst Cities

  1. F Des Peres 36.6
  2. F Springfield 37.1
  3. F Camdenton 39
City Map

Water quality across Missouri

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

509 cities in Missouri

Full rankings →
# City Grade Score Population Violations
1 Cosby A+
98.2
4K 2
2 Shelbyville A+
97.4
4K 2
3 Fairfax A+
96.9
638 2
4 St. Martins A+
96.7
2K 5
5 Smithton A+
96.7
563 4
6 Tipton A+
96.5
3K 11
7 Kirkwood A+
96
28K 0
8 Pilot Grove A+
95.5
768 8
9 Fort Leonard Wood A+
95.4
34K 33
10 Hayti A+
95.3
6K 10
11 Queen City A
94.8
3K 7
12 Beufort A
94.7
760 17
13 Marionville A
94.3
2K 5
14 Whiteoak A
94.2
2K 6
15 Truesdale A
94.1
853 5
16 Conway A
94.1
788 20
17 Raymoor A
94
22K 8
18 Osceola A
94
947 10
19 Sheldon A
94
543 8
20 Montgomery City A
93.9
3K 14
21 Lewistown A
93.9
580 3
22 Grain Valley A
93.8
19K 11
23 Savannah A
93.8
11K 30
24 Polo A
93.7
12K 6
25 Canton A
93.7
3K 10
26 Purdy A
93.5
1K 15
27 Labadie A
93.3
8K 9
28 Shelbina A
93.3
2K 5
29 Bismarck A
93.3
1K 14
30 Holt A
93.2
3K 11
31 Jasper A
93.2
932 22
32 Rock Port A
93.1
1K 5
33 El Dorado Spgs. A
93
4K 15
34 Westminster A
92.9
2K 14
35 Laplata A
92.9
1K 7
36 Ludlow A
92.9
1K 12
37 Summerfield A
92.9
1K 17
38 Lake Lotawana A
92.8
9K 4
39 Calhoun A
92.8
3K 7
40 Tarkio A
92.8
1K 29
41 Cole Camp A
92.7
1K 18
42 Williamstown A
92.6
7K 8
43 Orrick A
92.5
752 10
44 Strafford A
92.3
3K 27
45 Wardsville A
92
2K 20
46 Blythdale A
92
823 31
47 Watson A
92
700 12
48 Umatilla A
91.9
678 31
49 Odessa A
91.8
14K 44
50 Crystal City A
91.7
5K 11
51 Knob Noster A
91.7
3K 36
52 Clarence A
91.7
813 11
53 Noel A
91.5
2K 3
54 Huntsville A
91.5
2K 5
55 Wappappello A
91.5
1K 5
56 Norborne A
91.5
617 15
57 Salisbury A
91.4
2K 5
58 Holden A
91.3
15K 23
59 Buckhorn A
91.3
4K 11
60 Buckhorn A
91.3
4K 11
61 Bland A
91.3
539 35
62 Clever A
91.2
2K 21
63 Lake Winnebago A
91.2
2K 9
64 Granby A
91.1
2K 11
65 Cameron A
91
16K 39
66 High Ridge A
90.8
17K 40
67 High Ridge A
90.8
17K 40
68 Gallatin A
90.8
2K 30
69 Diamond A
90.8
926 10
70 Smithville A
90.7
13K 46
71 Lincoln A
90.7
1K 17
72 Jamesport A
90.7
567 22
73 Trimble A
90.6
1K 3
74 Hallsville A
90.5
8K 14
75 Herculaneum A
90.5
4K 12
76 Raymore A
90.5
3K 5
77 Miner A
90.4
1K 8
78 Licking A
90.3
5K 23
79 Exeter A
90.3
4K 14
80 Greenfield A
90.3
1K 22
81 Puxico A
90.3
985 37
82 Seligman A
90.3
890 8
83 Golden City A
90.3
680 8
84 Whiteman Afb A
90.2
10K 7
85 Point Lookout A
90.2
2K 3
86 Marston A
90.2
503 20
87 Iberia A
90.1
700 14
88 Miller A
90.1
699 10
89 Nevada A-
90
18K 39
90 Oak Grove A
90
8K 13
91 St. Clair A-
89.9
5K 24
92 Rushville A-
89.9
2K 2
93 Wellington A-
89.9
812 31
94 Stewartsville A-
89.9
750 10
95 Barnhart A-
89.8
37K 2
96 Kirksville A-
89.7
25K 62
97 Jane A-
89.7
2K 12
98 Marceline A-
89.7
2K 16
99 Russellville A-
89.7
800 2
100 Liberal A-
89.7
759 2
101 Powersite A-
89.6
6K 10
102 Salem A-
89.6
6K 19
103 Lamonte A-
89.6
1K 3
104 Pomona A-
89.6
850 21
105 St. Joseph A-
89.5
89K 13
106 Wheaton A-
89.5
698 17
107 Birch Tree A-
89.4
679 5
108 New Bloomfield A-
89.4
669 9
109 Milo A-
89.3
2K 4
110 Dexter A-
89.2
14K 16
111 Philadelphia A-
89.2
5K 2
112 Cuba A-
89.2
3K 24
113 Labadie A-
89.1
10K 38
114 Vandalia A-
89.1
3K 32
115 Windsor A-
89.1
3K 25
116 Kahoka A-
89.1
2K 7
117 Ewing A-
89.1
2K 3
118 New Florence A-
89.1
769 19
119 Centralia A-
88.9
9K 15
120 California A-
88.9
6K 43
121 Jonesburg A-
88.9
768 6
122 Hawk Point A-
88.9
669 13
123 Cabool A-
88.8
2K 4
124 Kelso A-
88.8
586 6
125 Leeton A-
88.6
601 9
126 Charleston A-
88.5
6K 4
127 Sibley A-
88.5
4K 21
128 Princeton A-
88.5
1K 4
129 Rockaway Beach A-
88.5
841 14
130 Steelville A-
88.4
2K 15
131 Taneyville A-
88.3
2K 13
132 Oregon A-
88.3
2K 17
133 Gainsville A-
88.3
742 15
134 Ashland A-
88.2
4K 58
135 Duenweg A-
88.2
1K 16
136 Wentzville A-
88.1
42K 37
137 Highlandville A-
88.1
1K 13
138 Edgar Springs A-
88.1
800 15
139 Hardin A-
88.1
569 13
140 St. Joseph A-
88
89K 1
141 St. Joseph A-
88
89K 1
142 St. Joseph A-
88
89K 1
143 St. Joseph A-
88
89K 1
144 Labadie A-
88
8K 104
145 Oronogo A-
88
3K 6
146 Jacksonville A-
88
1K 28
147 Lawson A-
87.9
5K 12
148 Palmyra A-
87.9
4K 2
149 Middle Brook A-
87.9
839 19
150 Wood Heights A-
87.9
750 17
151 Rocky Comfort A-
87.8
2K 4
152 Harrisonville A-
87.7
18K 49
153 Cottleville A-
87.7
2K 40
154 Mound City A-
87.7
1K 1
155 Carl Junction A-
87.6
14K 13
156 Paris A-
87.6
8K 15
157 Albany A-
87.6
3K 33
158 Calhoun A-
87.6
3K 17
159 Milan A-
87.6
2K 7
160 Macon A-
87.5
18K 66
161 Clarksdale A-
87.5
8K 8
162 Brosley A-
87.5
3K 7
163 Moberly A-
87.4
25K 59
164 Battlefield A-
87.4
9K 38
165 Success A-
87.4
3K 13
166 Qulin A-
87.3
2K 35
167 Fillmore A-
87.3
1K 57
168 Lake Tapawingo A-
87.3
995 15
169 Peculiar A-
87.2
9K 18
170 Buckner A-
87.2
3K 7
171 Franklin A-
87.2
2K 11
172 Deerfield A-
87.2
550 23
173 Mexico A-
87.1
17K 2
174 Mountain View A-
87.1
3K 16
175 Drexel A-
87.1
1K 21
176 Pevely A-
87
6K 19
177 Anderson A-
87
2K 7
178 Billings A-
87
1K 38
179 Green City A-
87
657 31
180 Fayette A-
86.8
3K 42
181 Big Lake A-
86.8
2K 14
182 Goodman A-
86.8
1K 9
183 Rich Hill A-
86.7
1K 35
184 Auxvasse A-
86.7
1K 8
185 Cassville A-
86.6
3K 2
186 Lowry City A-
86.6
640 48
187 Stoutland A-
86.6
510 19
188 Brookfield A-
86.5
10K 61
189 Willard A-
86.5
8K 63
190 Gerald A-
86.5
1K 39
191 Carterville A-
86.4
2K 23
192 New Haven A-
86.3
2K 11
193 Richland A-
86.3
2K 22
194 Blairstown A-
86.3
2K 30
195 Woolridge A-
86.3
562 7
196 Chillicothe A-
86.2
16K 12
197 Alba A-
86.2
555 49
198 Greenwood A-
86
6K 8
199 Malden A-
86
4K 18
200 Jameson A-
85.9
3K 10
201 Hilsboro A-
85.9
2K 4
202 Alton A-
85.9
2K 45
203 Hamilton A-
85.9
2K 37
204 Unity Village A-
85.9
1K 35
205 Eminence A-
85.9
700 10
206 Hermitage A-
85.9
621 7
207 Carrollton A-
85.8
7K 14
208 Norwood A-
85.8
665 9
209 Grandview A-
85.7
25K 1
210 Gower A-
85.7
2K 2
211 Madison A-
85.7
554 1
212 Lockwood A-
85.6
936 3
213 Arcadia A-
85.6
605 8
214 Pilot Knob A-
85.5
746 3
215 Catalina A-
85.4
3K 133
216 Wheatland A-
85.4
2K 29
217 Republic A-
85.3
16K 34
218 Plattsburg A-
85.3
2K 17
219 Ocklawaha A-
85.3
2K 40
220 Purdin A-
85.3
1K 6
221 Pleasant Hope A-
85.3
614 20
222 Waldron A-
85.2
7K 1
223 Scott City A-
85.2
5K 7
224 Foster A-
85.2
2K 8
225 Webb City A-
85.1
16K 21
226 Seneca A-
85.1
3K 46
227 Laurie A-
85.1
990 19
228 Seymour A-
85
2K 23
229 Linn B+
84.9
4K 23
230 Polo B+
84.8
15K 7
231 Kewanee B+
84.8
600 23
232 Blue Springs B+
84.7
61K 3
233 Crocker B+
84.7
2K 58
234 Westphalia B+
84.7
1K 31
235 Trenton B+
84.6
10K 55
236 Gordonville B+
84.6
2K 15
237 New London B+
84.6
975 3
238 Sugar Creek B+
84.5
4K 4
239 Thayer B+
84.5
2K 16
240 Buffalo B+
84.4
3K 38
241 Marthasville B+
84.4
1K 22
242 Willow Springs B+
84.3
4K 13
243 Slater B+
84.3
3K 24
244 Weatherby Lake B+
84.3
2K 2
245 Fair Grove B+
84.3
2K 45
246 Ormond Beach B+
84.3
1K 20
247 Patterson B+
84.3
950 3
248 Golden B+
84.3
654 19
249 Gladstone B+
84.2
27K 1
250 Ash Grove B+
84.2
1K 51
251 Innsbrook B+
84.2
810 6
252 Browning B+
84.1
5K 12
253 Holcomb B+
84.1
635 18
254 Brunswick B+
84
2K 10
255 Saline B+
84
1K 25
256 Strasburg B+
83.9
723 6
257 Higginsville B+
83.6
12K 43
258 Sparta B+
83.6
2K 15
259 Burlington Junction B+
83.6
630 14
260 St. Charles B+
83.5
73K 5
261 Raytown B+
83.5
34K 17
262 Kearney B+
83.5
19K 17
263 Pleasant Hill B+
83.5
14K 46
264 Knox City B+
83.5
4K 13
265 Wheeling B+
83.5
2K 18
266 New Madrid B+
83.4
3K 8
267 La Grange B+
83.4
874 17
268 Sturgeon B+
83.4
872 9
269 Beverly Hills B+
83.3
12K 28
270 Dixon B+
83.3
1K 60
271 Humansville B+
83.3
1K 18
272 Novinger B+
83.2
550 12
273 Bloomsdale B+
83.1
639 28
274 Parkville B+
83
20K 8
275 Lexington B+
83
5K 50
276 Glenwood B+
83
728 6
277 Imperial B+
82.9
10K 102
278 Ellsinore B+
82.9
500 13
279 Desloge B+
82.8
5K 7
280 Clarkton B+
82.8
1K 39
281 Caruthersville B+
82.7
6K 7
282 Fulton B+
82.4
26K 29
283 Camden Point B+
82.4
741 11
284 St. Elizabeth B+
82.4
519 32
285 Bernie B+
82.3
2K 13
286 Warrensburg B+
82.2
27K 8
287 House Springs B+
82.2
8K 96
288 Gideon B+
82.2
3K 60
289 Mansfield B+
82.2
1K 17
290 Wayland B+
82.2
533 12
291 Desoto B+
82.1
7K 56
292 Rocky Ridge B+
82.1
750 7
293 Lees Summit B+
82
111K 26
294 Bowling Green B+
82
12K 17
295 N. Kansas City B+
82
5K 4
296 Appleton City B+
82
2K 47
297 Hornersville B+
81.9
526 81
298 Otterville B+
81.9
510 133
299 Bourbon B+
81.8
2K 163
300 Perry B+
81.7
7K 4
301 Merriam Woods B+
81.7
2K 47
302 Bevier B+
81.7
762 8
303 Edina B+
81.6
1K 14
304 Excelsior Spgs. B+
81.5
11K 22
305 Canalou B+
81.5
638 32
306 Chaffee B+
81.4
4K 126
307 Ellington B+
81.4
900 38
308 Concordia B+
81.3
3K 22
309 Hartville B+
81.3
655 28
310 West Plains B+
81.2
16K 33
311 Jefferson City B+
80.8
68K 68
312 Winona B+
80.7
1K 12
313 St. Peters B+
80.5
53K 2
314 Freeman B+
80.3
5K 25
315 Sweet Springs B+
80.1
1K 38
316 New Franklin B+
80.1
1K 37
317 Marble Hill B+
80
2K 50
318 Lebanon B
79.8
30K 35
319 Eldorado Spring B
79.8
2K 26
320 Campbell B
79.5
6K 24
321 Keytesville B
79.4
500 23
322 Independence B
79.3
121K 13
323 Kansas City B
79.2
515K 34
324 Arnold B
79.2
39K 9
325 Monett B
79.1
9K 38
326 La Belle B
79.1
660 11
327 Butler B
79
7K 71
328 Sarcoxie B
79
2K 21
329 Waverly B
79
800 23
330 Kidder B
79
695 33
331 Higbee B
78.9
560 25
332 Dearborn B
78.7
3K 27
333 Melbourne Beach B
78.7
750 51
334 Sikeston B
78.6
18K 47
335 Platte City B
78.2
15K 54
336 Lamar B
78.2
14K 64
337 Holts Summit B
78.2
10K 40
338 Edgerton B
78.2
2K 39
339 Bloomfield B
77.9
3K 22
340 Peeples Valley B
77.6
658 143
341 Van Buren B
77.5
2K 65
342 East Prairie B
77.3
3K 13
343 Ferrelview B
77.3
802 16
344 Lathrop B
77.1
9K 24
345 Steele B
77.1
2K 32
346 Glasgow B
76.8
2K 18
347 Vienna B
76.8
1K 51
348 Kennett B
76.7
11K 48
349 Belle B
76.3
2K 72
350 Loose Creek B
76.2
1K 18
351 Loose Creek B
76.2
1K 18
352 Drexel B
75.8
3K 64
353 Viburnum B
75.8
639 40
354 Knightdale B
75.7
533 88
355 Quartzsite B
75.6
1K 111
356 Rockville B
75.6
675 46
357 Ocklawaha B
75.5
2K 62
358 Pierce City B
75.5
1K 65
359 Bolivar B
75.3
12K 77
360 Moscow Mills B
75.3
5K 31
361 Wellsville B
75.3
1K 99
362 Riverside B
75.3
775 13
363 Ste. Genevieve B
75.2
11K 46
364 Foristell B
75
1K 87
365 Chesterfield B-
74.8
1.1M 72
366 Macks Creek B-
74.8
1K 40
367 Winfield B-
74.5
15K 56
368 Essex B-
74.5
899 43
369 Blairstown B-
74.4
1K 52
370 Gadsden B-
74.4
540 153
371 Gadsden B-
74.4
540 153
372 Versailles B-
74.3
3K 64
373 Roach B-
74.2
2K 68
374 Weston B-
73.2
4K 37
375 Unionville B-
73.1
5K 48
376 Houston B-
73.1
4K 57
377 Garden City B-
72.8
4K 88
378 Elsberry B-
72.7
2K 40
379 Fordland B-
72.7
2K 93
380 Fredericktown B-
72.6
6K 76
381 De Soto B-
72.5
9K 167
382 Walnut Grove B-
72.2
665 56
383 Southwest City B-
72.1
2K 84
384 Hopkins B-
72.1
550 23
385 Portageville B-
72
3K 31
386 Advance B-
72
1K 7
387 Glenwood B-
72
923 29
388 Laddonia B-
72
511 22
389 St. James B-
71.9
4K 88
390 Mormon Lake B-
71.9
509 122
391 Heber B-
71.8
668 69
392 Belton B-
71.5
31K 64
393 Beverly Hills B-
71.5
12K 47
394 Bethany B-
71.2
7K 37
395 Summersville B-
71.1
502 20
396 Braymer B-
71
2K 47
397 Salome B-
71
2K 121
398 Amsterdam B-
70.7
752 59
399 Cornville B-
70.7
650 136
400 Piedmont B-
70.5
2K 37
401 High Ridge B-
70.3
17K 89
402 Doniphan B-
70.3
8K 52
403 Pattonsburg B-
70.3
2K 32
404 Marshall B-
70
16K 47
405 Jackson C+
69.9
24K 159
406 Stanberry C+
69.8
2K 104
407 Matthews C+
69.6
1K 19
408 Bonne Terre C+
69.4
7K 153
409 Hermann C+
69.4
3K 32
410 Potosi C+
69.3
4K 156
411 Clinton C+
69
14K 58
412 Maryville C+
68.6
17K 55
413 Grant City C+
68.6
2K 99
414 Washington C+
68.1
18K 60
415 Liberty C+
68
37K 50
416 King City C+
67.9
1K 13
417 Hayti C+
67.8
9K 73
418 Morley C+
67.7
4K 36
419 Waynesville C+
67.3
15K 101
420 Cleveland C+
67.1
690 27
421 Cedar Hill C+
66.4
5K 48
422 Leadwood C+
66.3
1K 82
423 Belleview C+
66.1
1K 76
424 Mountain Grove C+
66
5K 154
425 Hannibal C+
65.8
25K 80
426 Bunn C+
65.6
6K 110
427 Festus C
65
15K 286
428 Archie C
64.8
1K 67
429 Crane C
64.6
1K 89
430 Poplar Bluff C
64.3
29K 90
431 Wright City C
64.2
4K 91
432 Rosendale C
63.9
742 60
433 Martinsburg C
63.7
559 42
434 Bertrand C
63
733 116
435 Adrian C
62.9
4K 78
436 Ava C
62.9
3K 103
437 Oran C
62.8
2K 73
438 Summerfield C
62.5
3K 135
439 Eldon C
62.4
5K 70
440 Nixa C
61.8
28K 131
441 Columbia C
61.4
207K 145
442 Boonville C
61.4
11K 150
443 Morehouse C
60.9
1K 71
444 Peeples Valley C
60.9
758 228
445 Memphis C
60.6
5K 40
446 Anniston C-
59.7
3K 48
447 Cardwell C-
59.7
533 79
448 Tonto Village C-
58.3
512 335
449 Tonto Village C-
58.3
512 335
450 Louisiana C-
57
3K 90
451 Pineville C-
56.6
866 79
452 Galena C-
55.5
1K 162
453 Neosho C-
55.4
12K 175
454 Owensville C-
55.4
3K 95
455 Park Hills D+
54.9
10K 92
456 Marshfield D+
54.5
8K 103
457 Mercer D+
54.5
4K 50
458 Warrenton D+
54.1
13K 97
459 Sunrise Beach D+
53.7
1K 105
460 Lilbourn D+
53.3
1K 56
461 Carthage D+
52.4
15K 191
462 Monroe City D+
50.5
3K 49
463 Hillsboro D+
50.2
13K 92
464 Salome D+
50
2K 389
465 Wappapello D+
50
1K 169
466 Maysville D
49
1K 116
467 Ironton D
48.6
2K 61
468 Sullivan D
48.5
9K 359
469 Rogersville D
47.7
6K 244
470 Mount Vernon D
47.5
5K 102
471 Lake Ozark D
47.2
12K 132
472 Osage Beach D
47
9K 233
473 Kimberling City D
47
6K 755
474 Hollister D
47
6K 227
475 Blue Eye D
47
3K 339
476 Forsyth D
47
3K 214
477 Branson West D
47
3K 526
478 Stover D
47
3K 143
479 Reeds Spring D
47
2K 432
480 Shell Knob D
47
2K 195
481 Clifton D
47
955 251
482 White Hills D
47
951 425
483 White Hills D
47
671 273
484 Flagstaff D
47
560 256
485 Farmington D
46.9
23K 384
486 Senath D
46.9
5K 70
487 Pacific D
46.6
8K 219
488 Union D
46.5
13K 345
489 Rolla D
46
23K 245
490 Branson D
45.8
30K 368
491 Stockton D
45.5
3K 271
492 Cape Girardeau D
45.4
44K 359
493 Aurora D
45
15K 596
494 St. Robert D
45
5K 139
495 Ozark F
44.9
22K 231
496 Troy F
44.2
14K 204
497 Perryville F
44.2
12K 158
498 Yuma F
44.2
1K 683
499 O Fallon F
43.4
138K 86
500 Warsaw F
43
5K 456
501 Benton F
43
1K 122
502 Sedalia F
42.3
23K 507
503 Joplin F
42
83K 304
504 Bunn F
41.9
7K 276
505 St. Louis F
40.9
305K 189
506 Ocala F
39.5
5K 240
507 Camdenton F
39
10K 375
508 Springfield F
37.1
212K 293
509 Des Peres F
36.6
126K 14564
Counties

Browse Missouri counties

Adair 2 cities · avg 86.5 Andrew 9 cities · avg 87.2 Atchison 4 cities · avg 93.7 Audrain 5 cities · avg 79.9 Barry 7 cities · avg 87.7 Barton 2 cities · avg 90 Bates 7 cities · avg 76.6 Benton 3 cities · avg 75.5 Bollinger 1 city · avg 80 Boone 5 cities · avg 82.5 Brevard 1 city · avg 78.7 Buchanan 1 city · avg 89.9 Butler 3 cities · avg 79.7 Caldwell 3 cities · avg 78.6 Callaway 4 cities · avg 84.2 Camden 6 cities · avg 56 Cape Girardeau 3 cities · avg 66.6 Carroll 2 cities · avg 88.7 Carter 2 cities · avg 80.2 Cass 14 cities · avg 80.6 Cedar 3 cities · avg 72.8 Chariton 3 cities · avg 84.9 Christian 6 cities · avg 76.1 Citrus 2 cities · avg 77.4 Clark 3 cities · avg 88 Clay 9 cities · avg 84.6 Clinton 5 cities · avg 85.9 Coconino 2 cities · avg 59.5 Cole 4 cities · avg 89.8 Cooper 4 cities · avg 81.3 Crawford 3 cities · avg 86.5 Dade 2 cities · avg 87.9 Dallas 1 city · avg 84.4 Daviess 4 cities · avg 84.4 Dekalb 3 cities · avg 75.5 Dent 1 city · avg 89.6 Douglas 1 city · avg 62.9 Dunklin 11 cities · avg 77.7 Duval 1 city · avg 88 Franklin 13 cities · avg 72.7 Gasconade 3 cities · avg 72 Gentry 3 cities · avg 75.1 Gila 2 cities · avg 58.3 Greene 8 cities · avg 78.7 Greenlee 1 city · avg 47 Grundy 1 city · avg 84.6 Harrison 3 cities · avg 72.6 Henry 6 cities · avg 83.2 Hickory 2 cities · avg 85.7 Holt 3 cities · avg 87.6 Howard 4 cities · avg 82.7 Howell 4 cities · avg 85.5 Iron 5 cities · avg 76.7 Jackson 14 cities · avg 86.5 Jasper 11 cities · avg 78.8 Jefferson 16 cities · avg 79.8 Johnson 6 cities · avg 88 Knox 2 cities · avg 82.5 La Paz 3 cities · avg 65.5 Laclede 3 cities · avg 86.8 Lafayette 6 cities · avg 84.8 Lawrence 5 cities · avg 70.5 Lewis 5 cities · avg 87.8 Lincoln 6 cities · avg 73.9 Linn 3 cities · avg 87.2 Livingston 3 cities · avg 87.5 Macon 3 cities · avg 87.4 Madison 1 city · avg 72.6 Maries 2 cities · avg 76.5 Marion 10 cities · avg 75.7 Mcdonald 7 cities · avg 81.6 Mercer 1 city · avg 88.5 Miami 1 city · avg 87.1 Miller 3 cities · avg 78.3 Mississippi 4 cities · avg 72.1 Mohave 2 cities · avg 47 Moniteau 2 cities · avg 92.7 Monroe 2 cities · avg 68.1 Montgomery 4 cities · avg 86.8 Morgan 3 cities · avg 68.8 Navajo 1 city · avg 71.8 New Madrid 9 cities · avg 75.3 Newton 4 cities · avg 80.6 Nodaway 3 cities · avg 74.8 Oconee 1 city · avg 92.9 Oregon 2 cities · avg 85.2 Osage 4 cities · avg 80.5 Ozark 1 city · avg 88.3 Pemiscot 2 cities · avg 79.9 Perry 1 city · avg 44.2 Pettis 3 cities · avg 76.2 Phelps 3 cities · avg 68.7 Pike 2 cities · avg 69.5 Pima 1 city · avg 85.4 Platte 9 cities · avg 80.1 Polk 3 cities · avg 81.3 Pulaski 8 cities · avg 80.6 Putnam 1 city · avg 73.1 Ralls 2 cities · avg 83.2 Randolph 3 cities · avg 85.9 Ray 4 cities · avg 89.1 Reynolds 1 city · avg 81.4 Ripley 1 city · avg 70.3 Saline 3 cities · avg 78.1 Schuyler 3 cities · avg 83.3 Scotland 1 city · avg 60.6 Scott 8 cities · avg 74.7 Shannon 3 cities · avg 85.3 Shelby 3 cities · avg 94.1 St. Charles 5 cities · avg 74.1 St. Clair 3 cities · avg 87.5 St. Francois 6 cities · avg 68.9 St. Louis 2 cities · avg 85.4 St. Louis City 1 city · avg 40.9 St. Tammany Parish 1 city · avg 36.6 Ste. Genevieve 3 cities · avg 80.1 Stoddard 6 cities · avg 81 Stone 7 cities · avg 50.7 Sullivan 3 cities · avg 86.2 Taney 8 cities · avg 72.3 Texas 5 cities · avg 82.1 Vernon 4 cities · avg 90.1 Volusia 1 city · avg 84.3 Wake 1 city · avg 75.7 Warren 5 cities · avg 76.2 Washington 1 city · avg 69.3 Wayne 4 cities · avg 74.1 Webster 4 cities · avg 65 Worth 1 city · avg 68.6 Wright 4 cities · avg 78.8 Yavapai 3 cities · avg 69.7 Yuma 3 cities · avg 64.3
ZIP Codes

Browse Missouri by ZIP code

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

View all Missouri ZIP codes →
FAQ

Frequently asked questions about Missouri's water

Is Missouri's tap water safe to drink?

Missouri's water quality varies by city. The statewide average grade is B (78.7/100). 79% of cities scored an A or B, while 11% received a D or F. Check your specific city for detailed results.

Which Missouri cities have the best water quality?

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

Which Missouri cities have the worst water quality?

The lowest-rated cities are Des Peres (F), Springfield (F), Camdenton (F). We recommend residents in these areas consider water filtration and review their city's specific contaminant data.

How many Missouri cities have PFAS in their water?

137 out of 509 cities tested positive for PFAS "forever chemicals" (27%). 11 cities exceed the 2024 EPA maximum contaminant levels. Reverse osmosis or activated carbon filters can help reduce PFAS exposure.

Water quality resources

Guide
How to Read Your Water Quality Report
Read guide →
Guide
Lead in Drinking Water
Read guide →
Guide
PFAS Forever Chemicals Explained
Read guide →
News
Latest Water Quality News
View all →
Share this reportHelp others learn about their water quality
WhatsAppXFacebookLinkedInEmail