Oklahoma Tap Water Quality Report

502 cities analyzed • 3,004,857 people served

Updated March 2026 • Data from EWG & EPA SDWIS

502

Cities Analyzed

8.7

Avg Above Guidelines

3,004,857

Total Population Served

Best Water Quality

Wyandotte (0 above guidelines)

Most Concerns

Arcadia (20 above guidelines)

Most Common Contaminants in Oklahoma

Contaminant	Found In	% of Cities
Total trihalomethanes (TTHMs) carcinogen	434 of 502	86%
Dibromochloromethane carcinogen	413 of 502	82%
Bromodichloromethane carcinogen	391 of 502	78%
Haloacetic acids (HAA5) carcinogen	356 of 502	71%
Chloroform carcinogen	345 of 502	69%
Bromoform carcinogen	307 of 502	61%
Dichloroacetic acid carcinogen	303 of 502	60%
Nitrate and nitrite carcinogen	289 of 502	58%
Dibromoacetic acid	259 of 502	52%
Trichloroacetic acid carcinogen	252 of 502	50%

City-by-City Water Quality Rankings

Ranked by number of contaminants above EWG health guidelines (most to fewest).

#	City	Detected	Above Guidelines	Above Legal	People Served
1	Edmond	36	20	0	79,408
2	Arcadia	36	20	0	300
3	Moore	38	18	0	55,083
4	Yukon	30	18	0	22,498
5	Mustang	29	18	0	18,576
6	Piedmont	32	18	0	7,542
7	Norman	36	17	0	100,939
8	Stillwater	30	17	1	53,000
9	Ponca City	25	17	1	27,155
10	Bethany	24	17	0	20,307
11	Martha	24	17	0	205
12	Broken Arrow	27	16	1	116,330
13	El Reno	29	16	0	16,212
14	Newcastle	29	16	0	7,900
15	Marlow	29	16	0	6,426
16	Tipton	23	16	0	916
17	Olustee	24	16	1	607
18	Oklahoma City	27	15	0	644,000
19	Midwest City	28	15	0	55,935
20	Del City	32	15	0	22,128
21	Altus	22	15	0	18,717
22	Davidson	20	15	0	0
23	Arapaho	19	15	0	0
24	Lawton	24	14	0	92,757
25	Enid	22	14	0	49,347
26	Shawnee	22	14	0	29,990
27	Fort Sill	24	14	0	23,000
28	Bixby	24	14	0	18,750
29	Afton	19	14	0	1,428
30	Geronimo	24	14	0	1,200
31	Meeker	22	14	0	1,044
32	Union City	23	14	1	618
33	Drummond	23	14	0	405
34	Medicine Park	24	14	0	382
35	Clinton	18	14	0	0
36	Sand Springs	21	13	0	28,774
37	Duncan	22	13	0	23,000
38	Sapulpa	20	13	0	19,702
39	Chickasha	19	13	0	16,036
40	Glenpool	25	13	0	12,500
41	Coweta	22	13	0	9,450
42	Hastings	20	13	0	8,276
43	Cache	15	13	0	3,000
44	Catoosa	24	13	0	2,668
45	Newkirk	14	13	0	2,243
46	Tinker AFB	23	13	0	2,100
47	Coffeyville	24	13	0	1,050
48	South Coffeyville	24	13	0	790
49	Washington	14	13	0	600
50	Welling	26	13	0	418
51	Terral	20	13	0	386
52	Grandfield	17	13	2	0
53	Snyder	15	13	0	0
54	Mountain Park	16	13	1	0
55	Calvin	16	13	0	0
56	Tulsa	24	12	0	471,000
57	Muskogee	22	12	0	38,310
58	Bartlesville	22	12	0	34,748
59	Collinsville	21	12	0	25,375
60	Owasso	24	12	0	23,000
61	Jenks	24	12	0	16,924
62	Woodward	17	12	0	15,000
63	Tahlequah	25	12	0	14,458
64	Weatherford	15	12	0	10,833
65	Guthrie	14	12	0	9,925
66	Pryor	17	12	0	8,784
67	Idabel	15	12	1	6,952
68	Sayre	16	12	0	4,375
69	Nowata	18	12	2	3,971
70	Amber	16	12	0	3,930
71	Dewey	22	12	0	3,490
72	Wewoka	16	12	1	3,450
73	Cordell	14	12	0	2,903
74	Walters	17	12	0	2,551
75	Wainwright	22	12	0	2,550
76	Agra	14	12	0	2,525
77	Oktaha	22	12	0	2,280
78	Ochelata	22	12	0	2,250
79	Chouteau	17	12	0	2,100
80	Ratliff City	15	12	0	2,000
81	Comanche	14	12	1	1,649
82	Shidler	13	12	0	1,500
83	Konawa	17	12	0	1,479
84	Vian	18	12	0	1,445
85	Garber	12	12	0	1,225
86	Sperry	24	12	0	1,200
87	Temple	15	12	1	1,146
88	Ramona	22	12	0	900
89	Mutual	15	12	0	755
90	Vici	16	12	0	668
91	Calumet	14	12	0	600
92	Oakhurst	24	12	0	575
93	Canute	13	12	0	524
94	Indiahoma	14	12	1	350
95	Red Rock	16	12	1	293
96	Coyle	14	12	0	289
97	Taft	22	12	1	250
98	Dallas	18	12	0	225
99	Red Bird	18	12	1	153
100	Headrick	14	12	0	84
101	Douglas	12	12	0	32
102	Watts	25	12	0	0
103	Frederick	17	12	0	0
104	Fort Supply	17	12	0	0
105	Cleo Springs	15	12	1	0
106	Ardmore	18	11	0	24,893
107	Madill	23	11	0	17,587
108	Durant	21	11	0	15,545
109	Sallisaw	17	11	0	13,460
110	Guymon	23	11	0	11,442
111	Anadarko	13	11	0	6,804
112	Vinita	12	11	0	6,472
113	Porum	15	11	0	5,000
114	Tuttle	16	11	0	4,500
115	Big Cabin	12	11	0	3,750
116	Blair	13	11	0	2,662
117	Westville	14	11	0	2,598
118	Wynnewood	12	11	0	2,307
119	Pawnee	14	11	0	2,230
120	Waurika	15	11	1	2,100
121	Stilwell	14	11	0	1,675
122	Minco	12	11	0	1,632
123	Kansas	12	11	0	1,500
124	Okeene	14	11	0	1,240
125	Stillwell	14	11	0	1,025
126	Custer City	11	11	0	960
127	Sentinel	13	11	0	859
128	Wellston	13	11	0	825
129	Ryan	15	11	1	800
130	Dill City	13	11	0	526
131	San Jose	18	11	0	500
132	Capron	13	11	0	426
133	Carter	12	11	0	330
134	Kendrick	15	11	1	266
135	Rocky	12	11	0	202
136	Faxon	12	11	0	134
137	Bird Island	13	11	0	100
138	Davis	14	11	0	0
139	Hollister	12	11	0	0
140	Disney	12	11	0	0
141	Perkins	14	11	0	0
142	Council Hill	14	11	0	0
143	Lenapah	14	11	0	0
144	Mcalester	16	10	0	18,206
145	Claremore	17	10	0	15,873
146	Miami	16	10	0	13,704
147	Okmulgee	15	10	0	13,495
148	Elk City	19	10	0	10,510
149	Skiatook	12	10	0	8,110
150	Wagoner	17	10	0	7,982
151	Oologah	12	10	0	7,725
152	Purcell	17	10	0	6,693
153	Alva	11	10	0	5,208
154	Fort Gibson	12	10	0	4,700
155	Ketchum	12	10	0	4,025
156	Eufaula	14	10	1	3,574
157	Hulbert	13	10	0	3,395
158	Elgin	11	10	0	3,300
159	Stigler	12	10	0	3,000
160	Muldrow	21	10	0	2,948
161	Mcloud	15	10	0	2,939
162	Roland	12	10	0	2,842
163	Calera	14	10	1	2,815
164	Healdton	11	10	0	2,785
165	Checotah	12	10	0	2,774
166	Morris	15	10	1	2,377
167	Hollis	10	10	0	2,264
168	Crowder	13	10	0	2,203
169	Arkoma	21	10	0	2,180
170	Mounds	12	10	0	2,100
171	Lexington	13	10	0	2,086
172	Burns Flat	12	10	0	2,057
173	Warner	13	10	0	2,020
174	Goldsby	12	10	0	2,000
175	Schulter	16	10	0	1,890
176	Terlton	15	10	0	1,775
177	Marshall	12	10	0	1,618
178	Granite	11	10	0	1,425
179	Yale	13	10	1	1,227
180	Goodwell	11	10	0	1,200
181	Okay	12	10	0	1,110
182	Gore	13	10	0	1,075
183	Quinton	12	10	0	1,071
184	Waynoka	12	10	0	993
185	Pond Creek	11	10	0	982
186	Seiling	10	10	0	860
187	Canton	13	10	0	650
188	Eucha	12	10	0	465
189	Butler	13	10	0	437
190	North Miami	16	10	0	433
191	Red Oak	16	10	0	412
192	Chandler	13	10	0	400
193	Ralston	11	10	0	335
194	Randlett	12	10	1	320
195	Eakly	11	10	1	277
196	Mulhall	12	10	0	225
197	Dougherty	10	10	0	224
198	Orlando	12	10	0	201
199	Glencoe	13	10	1	150
200	Devol	12	10	2	150
201	Marland	13	10	0	142
202	Hillsdale	12	10	1	110
203	Spencer	10	10	0	0
204	Burneyville	10	10	0	0
205	Leedey	10	10	0	0
206	Hennessey	10	10	0	0
207	Alex	11	10	0	0
208	Burlington	10	10	0	0
209	Jet	10	10	0	0
210	Maysville	14	10	2	0
211	Dacoma	11	10	0	0
212	Buffalo	12	10	0	0
213	Hammon	11	10	0	0
214	Beaver	13	10	0	0
215	Forgan	14	10	0	0
216	Goltry	10	10	0	0
217	Dover	10	10	0	0
218	Davenport	13	10	0	0
219	Chelsea	12	10	0	0
220	Delaware	13	10	0	0
221	Kellyville	13	10	0	0
222	Cushing	11	10	0	0
223	Stroud	14	10	0	0
224	Lamont	11	10	0	0
225	Pauls Valley	15	9	0	6,256
226	Tecumseh	13	9	1	6,098
227	Henryetta	12	9	0	6,096
228	Hugo	12	9	1	5,536
229	Holdenville	11	9	0	4,732
230	Hartshorne	15	9	1	4,221
231	Pawhuska	13	9	0	3,800
232	Mannford	13	9	0	3,735
233	Tonkawa	9	9	0	3,299
234	Hominy	12	9	1	2,584
235	Salina	12	9	0	2,578
236	Colbert	14	9	0	2,312
237	Locust Grove	10	9	0	1,600
238	Inola	12	9	1	1,589
239	Fairfax	13	9	1	1,555
240	Allen	9	9	0	1,380
241	Waukomis	9	9	0	1,366
242	Beggs	11	9	1	1,364
243	Okarche	10	9	1	1,110
244	Elmore City	10	9	0	1,107
245	Langley	10	9	0	950
246	Dewar	12	9	0	917
247	Haileyville	13	9	0	889
248	Savanna	12	9	0	800
249	Copan	11	9	0	733
250	Verden	11	9	0	659
251	Jay	12	9	0	653
252	Mannsville	14	9	0	587
253	Lahoma	15	9	0	577
254	Cement	12	9	0	530
255	Bernice	10	9	0	504
256	Gans	11	9	0	495
257	Blanchard	9	9	0	473
258	Boynton	12	9	2	450
259	Sparks	10	9	0	404
260	Lehigh	9	9	0	396
261	Muse	17	9	0	373
262	Avant	10	9	2	361
263	Clarita	10	9	0	360
264	Pocasset	11	9	0	300
265	Lookeba	13	9	1	275
266	Cookson	10	9	0	272
267	Ladera Ranch	11	9	0	250
268	Braman	10	9	0	244
269	Sawyer	12	9	1	235
270	Park Hill	10	9	0	208
271	Cheyenne	9	9	0	200
272	Burbank	11	9	0	150
273	Jose	11	9	0	114
274	Carlton Landing	14	9	0	38
275	Laverne	11	9	0	0
276	Langston	10	9	0	0
277	Hobart	15	9	0	0
278	Nash	10	9	0	0
279	Weleetka	12	9	0	0
280	Ada	14	8	0	22,600
281	Spiro	12	8	0	9,077
282	Poteau	15	8	1	7,939
283	Broken Bow	9	8	0	5,685
284	Adair	11	8	0	3,360
285	Cleveland	8	8	0	3,200
286	Wilburton	9	8	0	3,025
287	Atoka	13	8	0	3,000
288	Tishomingo	8	8	0	2,783
289	Ninnekah	11	8	0	2,425
290	Porter	11	8	0	2,400
291	Perry	8	8	0	2,100
292	Krebs	9	8	0	2,051
293	Coalgate	9	8	0	2,005
294	Okemah	9	8	0	1,823
295	Preston	9	8	0	1,695
296	Howe	11	8	0	1,593
297	Rush Springs	8	8	0	1,278
298	Geary	11	8	1	1,258
299	Barnsdall	11	8	2	1,243
300	Thomas	10	8	0	1,238
301	Webbers Falls	11	8	0	1,200
302	Stonewall	14	8	0	1,162
303	Crescent	10	8	0	1,146
304	Stringtown	12	8	0	952
305	Blackwell	9	8	0	920
306	Fittstown	14	8	0	896
307	Colcord	9	8	0	877
308	New Port Richey	9	8	0	860
309	Boswell	14	8	1	850
310	Twin Oaks	9	8	0	750
311	Kiowa	11	8	1	731
312	Proctor	8	8	0	675
313	Fort Cobb	8	8	0	667
314	Smithville	10	8	0	600
315	Covington	8	8	0	553
316	Dibble	9	8	0	550
317	Eldorado	8	8	0	446
318	Spavinaw	9	8	0	432
319	Wanette	12	8	2	402
320	Medford	9	8	0	400
321	Francis	8	8	0	390
322	Asher	11	8	2	375
323	Longdale	10	8	0	363
324	Mangum	8	8	0	175
325	Fairmont	9	8	0	147
326	Tullahassee	11	8	2	106
327	Choctaw	9	8	0	105
328	Ft. Supply	10	8	0	43
329	Cashion	10	8	0	0
330	Greenfield	11	8	1	0
331	Roosevelt	8	8	0	0
332	Gotebo	11	8	0	0
333	Luther	9	8	0	0
334	Morrison	10	8	0	0
335	Mead	15	8	0	0
336	Milburn	8	8	0	0
337	Aline	8	8	1	0
338	Boise City	8	8	0	0
339	Meno	11	8	0	0
340	Depew	10	8	0	0
341	Grant	13	8	0	0
342	Fort Towson	11	8	0	0
343	Wister	10	7	0	40,000
344	Antlers	11	7	2	4,825
345	Pocola	11	7	1	4,700
346	Haworth	9	7	0	3,842
347	Heavener	12	7	0	3,000
348	Hinton	10	7	0	2,600
349	Wayne	8	7	0	1,897
350	Garvin	9	7	0	1,847
351	Monroe	10	7	0	1,800
352	Whitesboro	12	7	1	1,643
353	Talihina	9	7	1	1,500
354	Wetumka	10	7	0	1,451
355	Panama	11	7	0	1,400
356	Clayton	8	7	0	1,200
357	Shattuck	9	7	0	1,200
358	Cyril	10	7	0	1,168
359	Fairview	7	7	0	1,000
360	Valliant	11	7	0	999
361	Wright City	10	7	0	792
362	Millerton	9	7	0	755
363	Nashoba	8	7	1	725
364	Chattanooga	10	7	0	627
365	Keota	10	7	1	564
366	Mccurtain	10	7	1	560
367	Bokoshe	10	7	1	450
368	Hodgen	11	7	0	425
369	Taloga	10	7	0	372
370	Cromwell	9	7	1	337
371	Pittsburg	10	7	2	280
372	Cail/mayor	11	7	0	275
373	Bromide	10	7	0	163
374	Slick	8	7	0	148
375	Hitchcock	7	7	0	141
376	Ringling	10	7	0	41
377	Fargo	7	7	0	0
378	Reydon	7	7	0	0
379	Helena	9	7	0	0
380	Drumright	8	7	0	0
381	Stuart	12	7	0	0
382	Seminole	7	6	0	6,899
383	Kingston	7	6	0	1,600
384	Caddo	9	6	0	1,500
385	Velma	7	6	0	960
386	Tyrone	9	6	0	880
387	Welch	9	6	1	800
388	Achille	6	6	0	506
389	Ravia	6	6	0	459
390	Turpin	6	6	0	412
391	Swink	9	6	0	373
392	Colony	6	6	0	0
393	Paoli	7	6	0	0
394	Mountain View	7	6	0	0
395	Corn	6	6	0	0
396	Wapanucka	6	6	0	0
397	Ames	9	6	0	0
398	Bessie	6	6	0	0
399	Bristow	8	6	0	0
400	Prague	10	6	0	0
401	Albion	9	6	1	0
402	Boley	6	6	0	0
403	Dustin	6	6	0	0
404	Sulphur	5	5	0	4,929
405	Carnegie	8	5	0	3,900
406	Stratford	5	5	0	1,575
407	Oilton	10	5	0	1,435
408	Fletcher	8	5	0	1,022
409	Texhoma	5	5	0	935
410	Binger	5	5	0	708
411	Carney	8	5	0	649
412	Optima	7	5	0	400
413	Kremlin	7	5	1	320
414	Mooreland	6	5	0	315
415	Soper	7	5	0	300
416	Freedom	6	5	0	275
417	Blue Jacket	7	5	0	274
418	Liberal	5	5	0	98
419	Boise	5	5	0	24
420	Marietta	7	5	0	0
421	Gage	5	5	0	0
422	Coleman	8	5	0	0
423	Braggs	6	5	0	0
424	Lone Grove	9	4	0	4,863
425	Watonga	5	4	0	2,816
426	Wilson	8	4	0	1,600
427	Hydro	6	4	0	1,060
428	Quapaw	4	4	0	906
429	Erick	7	4	0	857
430	Roff	6	4	0	800
431	Tupelo	4	4	0	377
432	Gracemont	6	4	0	336
433	Hardesty	5	4	0	277
434	Grove	6	4	0	200
435	Harrah	7	4	0	200
436	Cartwright	5	4	0	52
437	Riverside	8	4	0	50
438	Apache	4	4	0	0
439	Ringwood	4	4	0	0
440	Oakwood	6	4	0	0
441	Hooker	8	4	0	0
442	Deer Creek	4	4	0	0
443	Bennington	6	4	0	0
444	Paden	8	4	0	0
445	Bison	3	3	0	1,980
446	Sterling	5	3	0	762
447	Tryon	3	3	0	448
448	Prue	6	3	0	387
449	Kaw City	5	3	0	372
450	Nicoma Park	4	3	0	318
451	Keyes	3	3	0	315
452	Kingfisher	3	3	0	237
453	St. Louis	3	3	0	225
454	Noble	5	3	1	170
455	Camargo	4	3	0	150
456	Lincoln	6	3	0	136
457	Adams	3	3	0	135
458	Loco	3	3	0	122
459	Wakita	3	3	0	100
460	Jones	3	3	0	0
461	Manchester	3	3	0	0
462	Ripley	3	3	0	0
463	Commerce	3	3	0	0
464	Bokchito	6	3	0	0
465	Bowlegs	4	3	0	0
466	Nichols Hills	4	2	0	4,020
467	Lone Wolf	2	2	0	3,744
468	Thackerville	6	2	0	2,000
469	Lindsay	4	2	0	1,570
470	Maud	2	2	0	1,136
471	Gould	3	2	0	1,132
472	Hendrix	5	2	0	820
473	Amorita	2	2	0	550
474	Wynona	2	2	0	450
475	Duke	4	2	0	318
476	Mill Creek	3	2	0	310
477	Leon	2	2	0	300
478	Longwood	3	2	0	225
479	Englewood	4	2	0	225
480	Sasakwa	2	2	0	210
481	Denver	2	2	0	200
482	Sharon	2	2	0	175
483	Bradley	2	2	0	0
484	Cherokee	2	2	0	0
485	Carmen	4	2	0	0
486	Arnett	2	2	0	0
487	Gate	4	2	0	0
488	Jennings	2	2	0	0
489	Haskell	1	1	0	1,765
490	Fairland	1	1	0	1,025
491	Earlsboro	2	1	0	450
492	Osage	1	1	0	275
493	Hanna	1	1	0	175
494	Hallett	1	1	0	168
495	Foss	1	1	0	127
496	Willow	3	1	0	114
497	Houston	3	1	0	75
498	Las Vegas	3	1	0	70
499	Loyal	1	1	0	0
500	Billings	1	1	0	0
501	Wyandotte	0	0	0	750
502	Kenefic	2	0	0	165

Recommended Filtration for Oklahoma

Based on the most common contaminants found across Oklahoma (Total trihalomethanes (TTHMs), Dibromochloromethane, Bromodichloromethane), we recommend a reverse osmosis system or high-quality carbon block filter to remove disinfection byproducts and their precursors.

Echo RO System

Removes up to 99.9% of contaminants. The gold standard for drinking water in Oklahoma homes.

View RO Systems

Echo Whole-Home Filter

Protect every tap in your home from chlorine, VOCs, and disinfection byproducts.

View Whole-Home Filters

Echo Hydrogen Water Flask

Once your water is clean, supercharge it with molecular hydrogen for antioxidant and anti-inflammatory benefits.

Shop Hydrogen Flask

Frequently Asked Questions

Is Oklahoma tap water safe to drink?

Water quality varies significantly across Oklahoma. Of the 502 cities analyzed, the average city has 8.7 contaminants above EWG health guidelines. The best water quality was found in Wyandotte. We recommend checking your specific city's report for detailed information.

What city has the best water in Oklahoma?

Based on our analysis, Wyandotte has the fewest contaminants above EWG health guidelines in Oklahoma, with 0 above guideline levels.

What city has the worst water in Oklahoma?

Based on our analysis, Arcadia has the most contaminants above EWG health guidelines in Oklahoma, with 20 above guideline levels.

What's the best water filter for Oklahoma residents?

For most Oklahoma households, we recommend a reverse osmosis (RO) system for drinking water and a whole-home filter for showers and baths. The specific recommendation depends on your city's contaminant profile — check your city's report for personalized guidance.

National Water Quality Reports

Data sources: Environmental Working Group (EWG) Tap Water Database, U.S. EPA Safe Drinking Water Information System (SDWIS)

Last updated: March 2026

Methodology: Contaminant levels are compared against both EPA legal limits (Maximum Contaminant Levels) and EWG health guidelines, which are often stricter and based on the latest scientific research.

Oklahoma Water Quality Report (2026)