Oklahoma Water Systems

Compiled by PlainEnviro Editorial, Environmental Data Editorial Team · July 13, 2026

883 community water systems in Oklahoma, ranked by violation count. Data from EPA Safe Drinking Water Information System (SDWIS).

Water Systems

883

Total Violations

28,341

Health Violations

812 systems

Population Served

3,655,246

Oklahoma operates 883 community water systems regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. Together these utilities serve an estimated 3,655,246 residents, each filing compliance results with the state's primacy agency and, for federally listed contaminants, with the U.S. Environmental Protection Agency.

Across the state, SDWIS records contain 28,341 total violations, of which 812 systems carry at least one active health-based violation, a Maximum Contaminant Level (MCL) exceedance or treatment-technique failure. That represents roughly 92% of Oklahoma systems.

Violation counts reflect both infrastructure realities and reporting diligence, a state with more small rural systems will accumulate more monitoring-type violations without necessarily delivering worse water. Health-based violations are the stronger safety signal. A past violation does not itself indicate current unsafe water; utilities must notify customers, remediate, and publish an annual Consumer Confidence Report. All numbers below draw directly from the federal SDWIS record.

Which water systems have violations? (467)

#	System Name	City	Source	Violations	Pop. Served	Health
1	HOMINY Hominy	Hominy	Surface Water	563	2,584	Yes
2	BARNSDALL Barnsdall	Barnsdall	Surface Water	379	1,243	Yes
3	WEWOKA PUBLIC WORKS AUTHORITY Wewoka	Wewoka	Surface Water	378	3,450	Yes
4	MAYSVILLE Maysville	Maysville	Surface Water	378	1,212	Yes
5	CLEVELAND MUNICIPAL AUTHORITY Cleveland	Cleveland	Surface Water	337	3,262	Yes
6	FAIRFAX Fairfax	Fairfax	Surface Water	313	1,555	Yes
7	RYAN UTILITIES AUTHORITY Ryan	Ryan	Surface Water	295	800	Yes
8	WAURIKA PUBLIC WORKS AUTHORITY Waurika	Waurika	Surface Water	275	2,100	Yes
9	BEGGS Beggs	Beggs	Surface Water	270	1,364	Yes
10	GRANDFIELD Grandfield	Grandfield	Surface Water	262	1,110	Yes
11	PUSHMATAHA CO. RWD #3 Antlers	Antlers	Surface Water	233	4,825	Yes
12	CHOCTAW CO. RWSG & SWMD #6 Boswell	Boswell	Surface Water	233	850	Yes
13	EUFAULA PWA Eufaula	Eufaula	Surface Water	231	2,766	Yes
14	PITTSBURG CO. RWD #14 Mcalester	Mcalester	Surface Water	220	1,680	Yes
15	WAGONER CO. RWD #2 Wagoner	Wagoner	Surface Water	210	2,000	Yes
16	MUSKOGEE CO. RWD #3 Council Hill	Council Hill	Surface Water	207	1,300	Yes
17	BOSWELL PUBLIC WORKS AUTHORITY Boswell	Boswell	Surface Water	205	932	Yes
18	STRINGTOWN PWA Stringtown	Stringtown	Surface Water	198	1,105	Yes
19	MUSKOGEE CO. RWD #5 Muskogee	Muskogee	Surface Water	192	4,135	Yes
20	IDABEL PWA Idabel	Idabel	Surface Water	190	6,952	Yes
21	SOUTHERN OKLA WATER CORP Ardmore	Ardmore	Surface Water	182	11,250	Yes
22	COWETA PWA Coweta	Coweta	Surface Water	180	9,450	Yes
23	SPIRO EAST WATER ASSOCIATION Spiro	Spiro	Surface Water	178	1,817	Yes
24	OKMULGEE CO. RWD #2 (PRESTON) Preston	Preston	Surface Water	177	2,355	Yes
25	MAJOR COUNTY RWD #1 Fairview	Fairview	Groundwater	175	1,000	Yes
26	COMANCHE PUBLIC WORKS AUTHORITY Comanche	Comanche	Surface Water	170	1,649	Yes
27	PAYNE CO RWD #4 Yale	Yale	Surface Water	166	820	Yes
28	ADAMSON RWD #8 Hartshorne	Hartshorne	Surface Water	159	4,221	Yes
29	HUGO MUNICIPAL AUTHORITY Hugo	Hugo	Surface Water	158	5,536	Yes
30	MCALESTER PWA Mcalester	Mcalester	Surface Water	154	18,206	Yes
31	TALIHINA PWA Talihina	Talihina	Surface Water	154	950	Yes
32	HOLDENVILLE Holdenville	Holdenville	Surface Water	149	4,732	Yes
33	MCINTOSH CO. RWD #5 Checotah	Checotah	Surface Water	146	1,900	Yes
34	YALE Yale	Yale	Surface Water	144	1,227	Yes
35	ATOKA CO. RWS & SWMD #4 Atoka	Atoka	Surface Water	142	3,000	Yes
36	OKMULGEE CO. RWD #1 Schulter	Schulter	Surface Water	142	1,890	Yes
37	CALERA PWA Calera	Calera	Groundwater	140	2,815	Yes
38	PAWNEE Pawnee	Pawnee	Surface Water	140	2,230	Yes
39	JEFFERSON CO CONS RWD #1 Hastings	Hastings	Surface Water	139	8,398	Yes
40	MUSKOGEE CO. RWD #6 Wainwright	Wainwright	Surface Water	138	2,550	Yes
41	OKMULGEE Okmulgee	Okmulgee	Surface Water	137	13,495	Yes
42	WELEETKA PUBLIC WORKS AUTHORITY Weleetka	Weleetka	Surface Water	134	998	Yes
43	OKMULGEE CO. RWD #20 Morris	Morris	Surface Water	131	2,377	Yes
44	CHEROKEE CO. RWD #1 (FT GIBSON) Fort Gibson	Fort Gibson	Surface Water	131	710	Yes
45	LATIMER CO. RWD #2 Talihina	Talihina	Surface Water	130	1,500	Yes
46	DAVENPORT UTILITY AUTH Davenport	Davenport	Surface Water	130	881	Yes
47	OKMULGEE CO. RWD #6 (HECTORVILLE) Mounds	Mounds	Surface Water	128	8,370	Yes
48	CANADIAN CO RWD # 1 Calumet	Calumet	Groundwater	127	750	Yes
49	OKMULGEE CO. RWD #7 (NUYAKA) Okmulgee	Okmulgee	Surface Water	125	2,357	Yes
50	KIOWA Kiowa	Kiowa	Surface Water	124	731	Yes
51	MCINTOSH CO. RWD #8 (TEXANNA) Eufaula	Eufaula	Surface Water	122	3,574	Yes
52	TEMPLE Temple	Temple	Surface Water	121	1,146	Yes
53	GEARY Geary	Geary	Groundwater	120	1,258	Yes
54	PUSHMATAHA CO. RWD #5 (NASHOBA) Nashoba	Nashoba	Surface Water	120	725	Yes
55	OLUSTEE PUBLIC WORKS AUTHORITY Olustee	Olustee	Surface Water	118	607	Yes
56	TIPTON Tipton	Tipton	Surface Water	117	916	Yes
57	WRIGHT CITY PWA Wright City	Wright City	Surface Water	117	792	Yes
58	POTEAU PWA Poteau	Poteau	Surface Water	115	7,939	Yes
59	TECUMSEH UTILITY AUTHORITY Tecumseh	Tecumseh	Surface Water	114	6,098	Yes
60	MORRIS Morris	Morris	Surface Water	114	1,460	Yes
61	COMANCHE CO RWD #4 Cache	Cache	Surface Water	112	3,000	Yes
62	OKMULGEE CO. RWD #4 Morris	Morris	Surface Water	112	1,913	Yes
63	MCCURTAIN CO. RWD #2 Millerton	Millerton	Surface Water	111	755	Yes
64	PAWNEE CO RWD #3 Pawnee	Pawnee	Surface Water	111	685	Yes
65	PERRY WATER & LIGHT DEPT Perry	Perry	Surface Water	110	5,230	Yes
66	FREDERICK Frederick	Frederick	Surface Water	107	3,940	Yes
67	PITTSBURG CO. RWD #5 Mcalester	Mcalester	Surface Water	107	1,750	Yes
68	HOLLIS Hollis	Hollis	Groundwater	105	2,264	Yes
69	ANADARKO PUBLIC WORKS AUTHORITY Anadarko	Anadarko	Surface Water	104	6,804	Yes
70	STROUD UTILITIES AUTHORITY Stroud	Stroud	Surface Water	104	2,811	Yes
71	PORTER PWA Porter	Porter	Surface Water	104	2,400	Yes
72	HARTSHORNE Hartshorne	Hartshorne	Surface Water	104	2,300	Yes
73	SNYDER PUBLIC WORKS AUTHORITY Snyder	Snyder	Surface Water	99	1,509	Yes
74	NORTH BLAINE WATER CORP Okeene	Okeene	Groundwater	98	960	Yes
75	ALTUS Altus	Altus	Surface Water	97	18,717	Yes
76	LEFLORE CO. RWD #2 Pocola	Pocola	Surface Water	95	4,700	Yes
77	CHANDLER Chandler	Chandler	Surface Water	93	3,142	Yes
78	HENRYETTA Henryetta	Henryetta	Surface Water	92	6,096	Yes
79	PUSHMATAHA CO. RWD #2 (ALBION) Albion	Albion	Surface Water	92	959	Yes
80	WAGONER CO. RWD #4 Broken Arrow	Broken Arrow	Surface Water	90	25,792	Yes
81	PITTSBURG CO. RWD #7 (ARPELAR) Mcalester	Mcalester	Surface Water	90	2,040	Yes
82	MCINTOSH CO. RWS & SWMD #9 Checotah	Checotah	Surface Water	89	1,761	Yes
83	MUSKOGEE CO. RWD #1 (OKTAHA) Oktaha	Oktaha	Surface Water	84	2,280	Yes
84	OKARCHE Okarche	Okarche	Groundwater	84	1,110	Yes
85	COPAN PWA Copan	Copan	Surface Water	84	733	Yes
86	GARBER MUNICIPAL AUTHORITY Garber	Garber	Groundwater	84	725	Yes
87	MARSHALL COUNTY RURAL WATER DISTRICT #2 Madill	Madill	Surface Water	83	17,587	Yes
88	WETUMKA Wetumka	Wetumka	Surface Water	82	1,451	Yes
89	MCINTOSH CO. RWS & SWMD #2 (ONAPA) Checotah	Checotah	Surface Water	78	2,774	Yes
90	WESTERN CARTER CO WATER CORP Ratliff City	Ratliff City	Surface Water	78	2,000	Yes
91	LEFLORE CO. RWD #3 Whitesboro	Whitesboro	Surface Water	78	1,643	Yes
92	ROGERS CO RWD # 3 LAKE PLANT Claremore	Claremore	Surface Water	73	10,470	Yes
93	NOWATA MUNICIPAL AUTHORITY Nowata	Nowata	Surface Water	73	3,971	Yes
94	ATOKA Atoka	Atoka	Surface Water	71	2,988	Yes
95	MADILL Madill	Madill	Surface Water	70	3,410	Yes
96	CHICKASHA MUNICIPAL AUTHORITY Chickasha	Chickasha	Surface Water	67	16,036	Yes
97	WELCH PWA Welch	Welch	Groundwater	66	800	Yes
98	LEFLORE CO. RWD #14 Spiro	Spiro	Surface Water	65	9,077	Yes
99	VALLIANT PWA Valliant	Valliant	Surface Water	65	971	Yes
100	KAY CO RWD #5 (DALE WATER CORP) Newkirk	Newkirk	Groundwater	65	765	Yes
101	MUSKOGEE Muskogee	Muskogee	Surface Water	64	38,310	Yes
102	DUNCAN PUBLIC UTILITIES AUTHORITY Duncan	Duncan	Surface Water	63	23,000	Yes
103	UNION CITY Union City	Union City	Surface Water	62	618	Yes
104	MUSKOGEE CO. RWD #2 (GOOSENECK) Muskogee	Muskogee	Surface Water	61	1,000	Yes
105	KINGFISHER Kingfisher	Kingfisher	Groundwater	60	5,073	Yes
106	ANTLERS PWA Antlers	Antlers	Surface Water	58	2,547	Yes
107	PANAMA PWA Panama	Panama	Surface Water	58	1,400	Yes
108	MCINTOSH CO. RWD #3 (VICTOR) Checotah	Checotah	Surface Water	57	920	Yes
109	BLACKWELL MUNICIPAL AUTHORITY Blackwell	Blackwell	Surface Water	56	7,668	Yes
110	WAGONER CO. RWD #9 Wagoner	Wagoner	Surface Water	55	4,363	Yes
111	COTTON CO RWD #2 Walters	Walters	Groundwater	55	3,000	Yes
112	KREBS UTILITY AUTHORITY Krebs	Krebs	Surface Water	55	2,051	Yes
113	BRYAN COUNTY RURAL WATER DISTRICT #5 Durant	Durant	Surface Water	54	8,325	Yes
114	HEAVENER UTILITY AUTH - PSG Heavener	Heavener	Surface Water	54	3,000	Yes
115	ROGERS CO RWD # 2 Claremore	Claremore	Surface Water	54	2,750	Yes
116	ALTUS AFB Altus	Altus	Surface Water	53	4,617	Yes
117	DELAWARE CO RWD # 3 Jay	Jay	Surface Water	52	653	Yes
118	COALGATE PWA Coalgate	Coalgate	Surface Water	51	2,005	Yes
119	JACKSON CO WATER CORP Blair	Blair	Surface Water	50	2,662	Yes
120	TISHOMINGO MUNICIPAL AUTHORITY Tishomingo	Tishomingo	Surface Water	49	3,000	Yes
121	PUSHMATAHA CO. RWD #1 Clayton	Clayton	Surface Water	49	1,200	Yes
122	NOWATA CO RWD #7 Coffeyville	Coffeyville	Surface Water	49	1,050	Yes
123	CLAREMORE Claremore	Claremore	Surface Water	48	15,873	Yes
124	PAWNEE CO RWD #2 Terlton	Terlton	Surface Water	48	1,775	Yes
125	HASKELL CO. WATER COMPANY Quinton	Quinton	Surface Water	47	3,000	Yes
126	LONGTOWN RW&SD #1 (PITTSBURG CO.) Eufaula	Eufaula	Surface Water	46	5,444	Yes
127	OKMULGEE CO. RWD #21 Henryetta	Henryetta	Surface Water	46	625	Yes
128	STILLWATER UTILITIES AUTHORITY Stillwater	Stillwater	Surface Water	45	53,000	Yes
129	LEFLORE CO. RWD #18 Wister	Wister	Surface Water	45	3,870	Yes
130	GORE PWA Gore	Gore	Surface Water	45	1,688	Yes
131	HUGHES CO. RWD #1 Wetumka	Wetumka	Groundwater	45	1,225	Yes
132	WAGONER CO. RWD #7 (NEW) Okay	Okay	Surface Water	45	1,110	Yes
133	GARVIN CO RWD #6 (SW PURCHASE) Wynnewood	Wynnewood	Surface Water	45	862	Yes
134	WILBURTON Wilburton	Wilburton	Surface Water	44	3,025	Yes
135	BRYAN CO. RWS & SWMD #2 Mead	Mead	Surface Water	43	6,270	Yes
136	CHEYENNE Cheyenne	Cheyenne	Surface Water	42	778	Yes
137	ARDMORE Ardmore	Ardmore	Surface Water	41	24,893	Yes
138	MCCURTAIN CO. RWD #7 Garvin	Garvin	Surface Water	41	1,847	Yes
139	LOCUST GROVE Locust Grove	Locust Grove	Surface Water	41	1,600	Yes
140	HAILEYVILLE Haileyville	Haileyville	Surface Water	41	889	Yes
141	MOORE PUBLIC WORKS AUTHORITY Moore	Moore	Surface Water	40	55,083	Yes
142	PIEDMONT MUNICIPAL AUTHORITY Piedmont	Piedmont	Surface Water	39	7,542	Yes
143	WELLSTON Wellston	Wellston	Surface Water	39	825	Yes
144	WATONGA Watonga	Watonga	Groundwater	38	2,816	Yes
145	HINTON Hinton	Hinton	Groundwater	38	2,600	Yes
146	HARRAH Harrah	Harrah	Groundwater	37	4,190	Yes
147	FAIRVIEW Fairview	Fairview	Groundwater	37	2,690	Yes
148	STICKROSS MOUNTAIN WATER CO Tahlequah	Tahlequah	Surface Water	36	3,250	Yes
149	MACK ALFORD CORRECTIONAL CENTER Stringtown	Stringtown	Surface Water	35	952	Yes
150	CREEK CO RWD # 7 Mounds	Mounds	Surface Water	34	2,100	Yes
151	HUGHES CO. RWD #5 Holdenville	Holdenville	Surface Water	34	800	Yes
152	OAKLAND PWA Madill	Madill	Surface Water	33	1,050	Yes
153	MCCURTAIN CO. RWD #9 Valliant	Valliant	Surface Water	33	999	Yes
154	DEWAR Dewar	Dewar	Surface Water	33	917	Yes
155	MCCURTAIN CO. RWD #1 Haworth	Haworth	Surface Water	30	3,842	Yes
156	PAWHUSKA Pawhuska	Pawhuska	Surface Water	30	3,800	Yes
157	CHOCTAW CO. RWD #1 Grant	Grant	Groundwater	30	2,300	Yes
158	SAVANNA Savanna	Savanna	Surface Water	30	800	Yes
159	OKAY PWA Okay	Okay	Surface Water	30	767	Yes
160	TAHLEQUAH PWA Tahlequah	Tahlequah	Surface Water	29	14,458	Yes
161	MULDROW PWA Muldrow	Muldrow	Surface Water	28	3,104	Yes
162	WALTERS PUBLIC WORKS AUTHORITY Walters	Walters	Surface Water	28	2,551	Yes
163	DAVIS Davis	Davis	Surface Water	27	2,610	Yes
164	APACHE Apache	Apache	Groundwater	27	1,521	Yes
165	PITTSBURG CO. RWD #16 Mcalester	Mcalester	Surface Water	27	1,268	Yes
166	EL RENO El Reno	El Reno	Surface Water	26	16,212	Yes
167	CHECOTAH PWA Checotah	Checotah	Surface Water	26	3,481	Yes
168	CHEROKEE CO. RWD #13 Cookson	Cookson	Surface Water	26	1,640	Yes
169	TILLMAN CO RWD #1 Chattanooga	Chattanooga	Surface Water	26	1,500	Yes
170	MCCURTAIN CO. RWD #8 (MT. FORK WATER) Broken Bow	Broken Bow	Surface Water	25	5,685	Yes
171	OKFUSKEE CO. RWD #2 Okemah	Okemah	Surface Water	25	2,250	Yes
172	STIGLER Stigler	Stigler	Surface Water	24	2,731	Yes
173	WYNNEWOOD WATER & LIGHT Wynnewood	Wynnewood	Surface Water	24	2,307	Yes
174	OKFUSKEE CO. RWD #3 Okemah	Okemah	Surface Water	24	1,823	Yes
175	AFTON PWA Afton	Afton	Surface Water	24	1,428	Yes
176	FORT TOWSON Fort Towson	Fort Towson	Surface Water	24	611	Yes
177	OSU WATER PLANT Stillwater	Stillwater	Surface Water	23	13,000	Yes
178	PITTSBURG CO. PWA (CROWDER) Crowder	Crowder	Surface Water	23	2,203	Yes
179	PITTSBURG CO. RWD #11 (KIOWA) Mcalester	Mcalester	Surface Water	22	790	Yes
180	CREEK CO RWD # 2 Jenks	Jenks	Surface Water	21	12,788	Yes
181	CLAYTON PWA Clayton	Clayton	Surface Water	21	719	Yes
182	PAULS VALLEY Pauls Valley	Pauls Valley	Surface Water	20	6,256	Yes
183	HARMON WATER CORP Gould	Gould	Groundwater	20	1,132	Yes
184	ROFF Roff	Roff	Groundwater	20	800	Yes
185	LATIMER CO. RWD #1 Wilburton	Wilburton	Surface Water	19	2,750	Yes
186	CACHE Cache	Cache	Groundwater	19	2,371	Yes
187	SPIRO Spiro	Spiro	Surface Water	19	2,200	Yes
188	OKEMAH UTILITIES AUTHORITY Okemah	Okemah	Surface Water	18	3,113	Yes
189	LANGSTON PWA Langston	Langston	Surface Water	18	1,670	Yes
190	LEFLORE CO. RWD #5 Howe	Howe	Surface Water	18	1,593	Yes
191	KAY COUNTY RURAL WATER DISTRICT 7 Blackwell	Blackwell	Surface Water	18	920	Yes
192	VINITA UTILITIES AUTHORITY Vinita	Vinita	Surface Water	17	6,472	Yes
193	BROKEN BOW PWA Broken Bow	Broken Bow	Surface Water	17	4,320	Yes
194	OKFUSKEE CO. RWD #1 (BOLEY) Boley	Boley	Groundwater	17	1,000	Yes
195	CADDO Caddo	Caddo	Groundwater	17	944	Yes
196	NORGE WATER AND SEWER CO., INC Chickasha	Chickasha	Surface Water	17	890	Yes
197	OSAGE CO RWD #15 Skiatook	Skiatook	Surface Water	16	6,647	Yes
198	PITTSBURG CO. RWD #9 (MCALESTER) Mcalester	Mcalester	Surface Water	16	872	Yes
199	SKIATOOK PWA Skiatook	Skiatook	Surface Water	15	8,110	Yes
200	MAYES CO RWD # 3 Disney	Disney	Surface Water	15	2,400	Yes
201	KONAWA PWA Konawa	Konawa	Groundwater	15	1,479	Yes
202	QUINTON Quinton	Quinton	Surface Water	15	1,071	Yes
203	SAPULPA Sapulpa	Sapulpa	Surface Water	14	19,702	Yes
204	HEALDTON Healdton	Healdton	Surface Water	14	2,785	Yes
205	MARIETTA PWA Marietta	Marietta	Groundwater	14	2,626	Yes
206	PERKINS Perkins	Perkins	Groundwater	14	2,572	Yes
207	ADAIR CO RWD #5 Westville	Westville	Surface Water	14	675	Yes
208	CRAIG CO RWD #2 Vinita	Vinita	Surface Water	13	4,250	Yes
209	NICHOLS HILLS Nichols Hills	Nichols Hills	Groundwater	13	4,020	Yes
210	DEWEY PUBLIC WORKS AUTHORITY Dewey	Dewey	Surface Water	13	3,490	Yes
211	PRAGUE Prague	Prague	Groundwater	13	2,395	Yes
212	LANGLEY Langley	Langley	Surface Water	13	950	Yes
213	STERLING PWA Sterling	Sterling	Groundwater	13	762	Yes
214	LE ANN WATER Ramona	Ramona	Surface Water	13	750	Yes
215	PAOLI Paoli	Paoli	Groundwater	13	610	Yes
216	SHAWNEE MUNICIPAL AUTHORITY Shawnee	Shawnee	Surface Water	12	29,990	Yes
217	CLINTON Clinton	Clinton	Surface Water	12	8,883	Yes
218	LEFLORE CO. CONSOLIDATED RWD #12 Monroe	Monroe	Surface Water	12	1,800	Yes
219	CHEROKEE Cherokee	Cherokee	Surface Water	12	1,630	Yes
220	SHATTUCK Shattuck	Shattuck	Groundwater	12	1,200	Yes
221	EAST CENTRAL OKLAHOMA WATER AUTHORITY Webbers Falls	Webbers Falls	Surface Water	12	1,200	Yes
222	OAKVIEW WATER CORP Madill	Madill	Groundwater	12	925	Yes
223	WOODWARD CO RWD #2 Woodward	Woodward	Groundwater	12	920	Yes
224	WAYNE Wayne	Wayne	Groundwater	12	688	Yes
225	DURANT UTILITIES AUTHORITY Durant	Durant	Surface Water	11	15,545	Yes
226	BLANCHARD Blanchard	Blanchard	Surface Water	11	2,966	Yes
227	LEXINGTON Lexington	Lexington	Groundwater	11	2,086	Yes
228	HENNESSEY Hennessey	Hennessey	Groundwater	11	2,058	Yes
229	RINGLING Ringling	Ringling	Groundwater	11	1,200	Yes
230	CRAIG CO RWS & SWMD #3 Welch	Welch	Groundwater	11	1,100	Yes
231	VICI Vici	Vici	Groundwater	11	668	Yes
232	CARNEY Carney	Carney	Groundwater	11	649	Yes
233	WOODWARD Woodward	Woodward	Groundwater	10	15,000	Yes
234	CREEK CO RWD # 1 Kellyville	Kellyville	Surface Water	10	5,675	Yes
235	COLLINSVILLE Collinsville	Collinsville	Surface Water	10	5,400	Yes
236	FLETCHER Fletcher	Fletcher	Groundwater	10	1,022	Yes
237	OKLAHOMA STATE REFORMATORY Granite	Granite	Groundwater	10	999	Yes
238	BECKHAM CO RWD # 2 Erick	Erick	Groundwater	10	857	Yes
239	SOUTH COFFEYVILLE South Coffeyville	South Coffeyville	Surface Water	10	790	Yes
240	VERDEN Verden	Verden	Groundwater	10	659	Yes
241	CHATTANOOGA PWS Chattanooga	Chattanooga	Groundwater	10	627	Yes
242	GUTHRIE Guthrie	Guthrie	Surface Water	9	9,925	Yes
243	COMANCHE CO RWD #3 Lawton	Lawton	Surface Water	9	2,325	Yes
244	COLBERT PUA Colbert	Colbert	Groundwater	9	2,312	Yes
245	US ARMY AMMUNITION PLANT Mcalester	Mcalester	Surface Water	9	1,872	Yes
246	COMANCHE CO RWD #2 Elgin	Elgin	Groundwater	9	1,840	Yes
247	LEFLORE CO. RWD #1 Poteau	Poteau	Surface Water	9	1,758	Yes
248	MCCURTAIN CO. RWD #5 (HOCHATOWN) Broken Bow	Broken Bow	Surface Water	9	1,614	Yes
249	KINGSTON PWA Kingston	Kingston	Groundwater	9	1,600	Yes
250	WAGONER CO. RWD #6 Wagoner	Wagoner	Surface Water	9	1,500	Yes
251	PAYNE CO RWD #3 Stillwater	Stillwater	Surface Water	9	1,400	Yes
252	GARVIN CO RWD #4 Pauls Valley	Pauls Valley	Surface Water	9	1,340	Yes
253	GOODWELL Goodwell	Goodwell	Groundwater	9	1,198	Yes
254	MAUD Maud	Maud	Groundwater	9	1,136	Yes
255	HYDRO PWA Hydro	Hydro	Groundwater	9	1,060	Yes
256	TYRONE Tyrone	Tyrone	Groundwater	9	880	Yes
257	SEILING Seiling	Seiling	Groundwater	9	860	Yes
258	ALEX Alex	Alex	Groundwater	9	635	Yes
259	SAND SPRINGS Sand Springs	Sand Springs	Surface Water	8	28,774	Yes
260	GLENPOOL WATER Glenpool	Glenpool	Surface Water	8	12,500	Yes
261	GUYMON Guymon	Guymon	Groundwater	8	11,442	Yes
262	SAPULPA RURAL WATER COMPANY Sapulpa	Sapulpa	Surface Water	8	5,810	Yes
263	CONSOLIDATED RWD #3 CREEK CO Sapulpa	Sapulpa	Surface Water	8	3,500	Yes
264	NEW CORDELL UTILITY AUTHORITY Cordell	Cordell	Surface Water	8	2,903	Yes
265	BOWLEGS LIMA WATER Bowlegs	Bowlegs	Groundwater	8	2,500	Yes
266	NOBLE COUNTY RWD #2 Perry	Perry	Surface Water	8	2,100	Yes
267	WARNER Warner	Warner	Surface Water	8	2,020	Yes
268	GOLDSBY WATER AUTH TRUST Goldsby	Goldsby	Groundwater	8	2,000	Yes
269	CARNEGIE Carnegie	Carnegie	Groundwater	8	1,637	Yes
270	SOUTH DELAWARE CO REGIONAL WATER AUTH. Kansas	Kansas	Surface Water	8	1,500	Yes
271	MOORELAND Mooreland	Mooreland	Groundwater	8	1,226	Yes
272	BLAIR PUBLIC WORKS AUTHORITY Blair	Blair	Groundwater	8	894	Yes
273	MUSKOGEE CO. RWD #4 Fort Gibson	Fort Gibson	Surface Water	8	783	Yes
274	WEATHERFORD Weatherford	Weatherford	Groundwater	7	10,833	Yes
275	GROVE MUNICIPAL SERVICES AUTH. Grove	Grove	Surface Water	7	7,311	Yes
276	STEPHENS CO RWD #5 Marlow	Marlow	Surface Water	7	6,426	Yes
277	NOBLE UTILITIES AUTHORITY Noble	Noble	Groundwater	7	5,750	Yes
278	PORUM PWA Porum	Porum	Surface Water	7	5,000	Yes
279	MARLOW MUNICIPAL AUTHORITY Marlow	Marlow	Groundwater	7	4,600	Yes
280	TUTTLE Tuttle	Tuttle	Groundwater	7	4,500	Yes
281	JOSEPH HARP CORR INST Lexington	Lexington	Groundwater	7	3,000	Yes
282	STRATFORD Stratford	Stratford	Groundwater	7	1,575	Yes
283	ATOKA CO. RWD #3 (CANEY) Caddo	Caddo	Groundwater	7	1,500	Yes
284	VIAN Vian	Vian	Surface Water	7	1,445	Yes
285	CRESCENT Crescent	Crescent	Groundwater	7	1,411	Yes
286	MURRAY STATE COLLEGE Tishomingo	Tishomingo	Surface Water	7	1,150	Yes
287	MOUNTAIN VIEW PWA Mountain View	Mountain View	Groundwater	7	880	Yes
288	SOONER UTILITIES-VALLEY BROOK Edmond	Edmond	Groundwater	7	853	Yes
289	BRYAN CO. RWD #9 Hendrix	Hendrix	Groundwater	7	820	Yes
290	LUTHER Luther	Luther	Groundwater	7	650	Yes
291	CALUMET Calumet	Calumet	Groundwater	7	600	Yes
292	ENID Enid	Enid	Groundwater	6	49,347	Yes
293	LOGAN CO RWD #1 Guthrie	Guthrie	Surface Water	6	8,907	Yes
294	SALLISAW Sallisaw	Sallisaw	Surface Water	6	8,510	Yes
295	NEWCASTLE Newcastle	Newcastle	Surface Water	6	7,900	Yes
296	ROGERS CO RWD # 4 Oologah	Oologah	Surface Water	6	7,725	Yes
297	MCLOUD Mcloud	Mcloud	Groundwater	6	2,939	Yes
298	GRAND LAKE PWA Ochelata	Ochelata	Groundwater	6	2,800	Yes
299	STEPHENS CO RWD #3 (MERIDIAN) Comanche	Comanche	Surface Water	6	1,610	Yes
300	MCINTOSH CO. RWD #6 (VIVIAN) Eufaula	Eufaula	Groundwater	6	1,500	Yes
301	OSAGE CO RWD #21 Shidler	Shidler	Surface Water	6	1,500	Yes
302	RUSH SPRINGS Rush Springs	Rush Springs	Groundwater	6	1,278	Yes
303	OKEENE Okeene	Okeene	Groundwater	6	1,240	Yes
304	GARFIELD CO RWD #6 Garber	Garber	Groundwater	6	1,225	Yes
305	PANHANDLE STATE UNIVERSITY Goodwell	Goodwell	Groundwater	6	1,200	Yes
306	FAIRLAND PUBLIC WORKS AUTHORITY Fairland	Fairland	Groundwater	6	1,025	Yes
307	DEWEY CO RWD #3 Mutual	Mutual	Groundwater	6	755	Yes
308	ARAPAHO Arapaho	Arapaho	Surface Water	6	748	Yes
309	BINGER PWA Binger	Binger	Groundwater	6	708	Yes
310	ALFALFA CO RWS & SWMD #1 NORTH Byron	Byron	Groundwater	6	600	Yes
311	FORT SILL HQUSAFACFS Fort Sill	Fort Sill	Surface Water	5	23,000	Yes
312	MUSTANG Mustang	Mustang	Surface Water	5	18,576	Yes
313	SEQUOYAH CO. RWD #8 Sallisaw	Sallisaw	Surface Water	5	13,460	Yes
314	PRYOR Pryor	Pryor	Surface Water	5	8,784	Yes
315	SAYRE Sayre	Sayre	Groundwater	5	4,375	Yes
316	MAYES CO RWD #4 Pryor	Pryor	Surface Water	5	4,183	Yes
317	CHOCTAW Choctaw	Choctaw	Groundwater	5	3,926	Yes
318	SPENCER Spencer	Spencer	Groundwater	5	3,746	Yes
319	COMMERCE Commerce	Commerce	Groundwater	5	2,645	Yes
320	MAYES CO RWD # 9 Locust Grove	Locust Grove	Surface Water	5	2,578	Yes
321	WATER IMPROVEMENT DISTRICT #3 Tulsa	Tulsa	Surface Water	5	2,475	Yes
322	INDIANOLA RWD #18 Indianola	Indianola	Surface Water	5	2,000	Yes
323	MCCLAIN CO RWD # 8 Wayne	Wayne	Groundwater	5	1,897	Yes
324	WILSON MUNICIPAL AUTHORITY Wilson	Wilson	Groundwater	5	1,600	Yes
325	BOISE CITY PWA Boise City	Boise City	Groundwater	5	1,483	Yes
326	GRANITE PWS Granite	Granite	Groundwater	5	1,425	Yes
327	SEQUOYAH CO. RWD #3 Sallisaw	Sallisaw	Surface Water	5	1,040	Yes
328	BROKEN ARROW MUNICIPAL AUTHORITY Broken Arrow	Broken Arrow	Surface Water	4	116,330	Yes
329	LAWTON Lawton	Lawton	Surface Water	4	92,757	Yes
330	EDMOND PWA Edmond	Edmond	Surface Water	4	79,408	Yes
331	PONCA CITY MUN WATER Ponca City	Ponca City	Surface Water	4	27,155	Yes
332	MIAMI Miami	Miami	Groundwater	4	13,704	Yes
333	ROGERS CO RWD # 3 COT STA Claremore	Claremore	Surface Water	4	10,750	Yes
334	PURCELL Purcell	Purcell	Groundwater	4	6,693	Yes
335	FORT GIBSON Fort Gibson	Fort Gibson	Surface Water	4	4,700	Yes
336	MANNFORD Mannford	Mannford	Surface Water	4	3,935	Yes
337	GRADY CO RWD #6 Amber	Amber	Groundwater	4	3,930	Yes
338	ELGIN PWA Elgin	Elgin	Groundwater	4	3,300	Yes
339	SEQUOYAH CO. RWD #7 Muldrow	Muldrow	Surface Water	4	2,948	Yes
340	MANGUM PWS Mangum	Mangum	Groundwater	4	2,924	Yes
341	LINDSAY PWA Lindsay	Lindsay	Groundwater	4	2,850	Yes
342	ADAIR CO RWD #3 Westville	Westville	Surface Water	4	2,598	Yes
343	51 EAST WATER Stillwater	Stillwater	Surface Water	4	2,500	Yes
344	BURNS FLAT PWS Burns Flat	Burns Flat	Groundwater	4	2,057	Yes
345	THACKERVILLE Thackerville	Thackerville	Groundwater	4	2,000	Yes
346	GARFIELD CO RWD #5 Bison	Bison	Groundwater	4	1,980	Yes
347	HASKELL PWA-WELLS Haskell	Haskell	Groundwater	4	1,765	Yes
348	SEQUOYAH CO. RWD #4 Sallisaw	Sallisaw	Surface Water	4	1,750	Yes
349	JONES Jones	Jones	Groundwater	4	1,727	Yes
350	ADAIR CO RWD #2 Stilwell	Stilwell	Surface Water	4	1,675	Yes
351	BECKHAM CO RWD # 1 Carter	Carter	Groundwater	4	1,595	Yes
352	CHEROKEE CO. RWD #2 (KEYS) Hulbert	Hulbert	Surface Water	4	1,493	Yes
353	OILTON Oilton	Oilton	Groundwater	4	1,435	Yes
354	SALINA PWA Salina	Salina	Surface Water	4	1,422	Yes
355	MEDFORD Medford	Medford	Groundwater	4	1,172	Yes
356	ELMORE CITY RW CORP Elmore City	Elmore City	Surface Water	4	1,107	Yes
357	BRAGGS WATER WORKS Braggs	Braggs	Groundwater	4	1,030	Yes
358	ALLEN PWA Allen	Allen	Groundwater	4	937	Yes
359	QUAPAW Quapaw	Quapaw	Groundwater	4	906	Yes
360	WASHINGTON CO RWD #5 Ramona	Ramona	Surface Water	4	900	Yes
361	ROGER MILLS RWD # 2 (RED STAR) Leedey	Leedey	Groundwater	4	800	Yes
362	NORMAN UTILITIES AUTHORITY Norman	Norman	Surface Water	3	104,868	Yes
363	OWASSO Owasso	Owasso	Surface Water	3	23,000	Yes
364	ADA Ada	Ada	Groundwater	3	22,600	Yes
365	BETHANY Bethany	Bethany	Surface Water	3	20,307	Yes
366	ELK CITY Elk City	Elk City	Groundwater	3	10,510	Yes
367	WAGONER Wagoner	Wagoner	Surface Water	3	7,982	Yes
368	DEER CREEK RURAL WATER CORP Edmond	Edmond	Groundwater	3	5,500	Yes
369	SULPHUR Sulphur	Sulphur	Groundwater	3	4,929	Yes
370	HOBART Hobart	Hobart	Surface Water	3	3,746	Yes
371	MAYES CO RWD # 5 Adair	Adair	Surface Water	3	3,360	Yes
372	LINCOLN CO RW & SEWER DIST 4 Agra	Agra	Surface Water	3	2,525	Yes
373	GRADY CO RWD #7 (NINNEKAH) Ninnekah	Ninnekah	Groundwater	3	2,425	Yes
374	WASHINGTON CO RWD #2 Ochelata	Ochelata	Surface Water	3	2,250	Yes
375	HOOKER Hooker	Hooker	Groundwater	3	1,788	Yes
376	LOGAN CO RWS & SWMD #3 Marshall	Marshall	Groundwater	3	1,618	Yes
377	WESTVILLE UTILITY AUTHORITY Westville	Westville	Surface Water	3	1,596	Yes
378	INOLA WATER WORKS INC Inola	Inola	Surface Water	3	1,589	Yes
379	MEEKER PUBLIC WORKS AUTHORITY Meeker	Meeker	Surface Water	3	1,044	Yes
380	HULBERT PWA Hulbert	Hulbert	Surface Water	3	1,007	Yes
381	STEPHENS CO RW&SD #1 Velma	Velma	Groundwater	3	960	Yes
382	MORRISON PUBLIC WORKS AUTH. Morrison	Morrison	Surface Water	3	950	Yes
383	OSAGE CO RWD # 1 Ochelata	Ochelata	Surface Water	3	930	Yes
384	COLCORD PWA Colcord	Colcord	Surface Water	3	819	Yes
385	OTTAWA CO RWD #5 Wyandotte	Wyandotte	Groundwater	3	750	Yes
386	OTTAWA CO RWD # 2 Fairland	Fairland	Groundwater	3	700	Yes
387	FORT COBB Fort Cobb	Fort Cobb	Groundwater	3	667	Yes
388	OTTAWA CO RWD # 4 Fairland	Fairland	Groundwater	3	652	Yes
389	CANTON Canton	Canton	Groundwater	3	650	Yes
390	SOONER UTILITIES-TINKER TOWN Edmond	Edmond	Groundwater	3	603	Yes
391	YUKON Yukon	Yukon	Surface Water	2	22,498	Yes
392	JENKS PWA Jenks	Jenks	Surface Water	2	16,924	Yes
393	SEMINOLE Seminole	Seminole	Groundwater	2	6,899	Yes
394	MAYES CO RWD # 2 Chouteau	Chouteau	Surface Water	2	6,280	Yes
395	LONE GROVE Lone Grove	Lone Grove	Groundwater	2	4,863	Yes
396	MURRAY CO RWD # 1 Sulphur	Sulphur	Groundwater	2	4,800	Yes
397	PONTOTOC CO RWD # 8 Ada	Ada	Groundwater	2	4,250	Yes
398	KETCHUM PWA Ketchum	Ketchum	Surface Water	2	4,025	Yes
399	CADDO CO RWD #3 Carnegie	Carnegie	Groundwater	2	3,900	Yes
400	TONKAWA Tonkawa	Tonkawa	Groundwater	2	3,299	Yes
401	DRUMRIGHT Drumright	Drumright	Groundwater	2	2,876	Yes
402	ROLAND Roland	Roland	Surface Water	2	2,842	Yes
403	COMANCHE CO RWD #1 Lawton	Lawton	Surface Water	2	2,800	Yes
404	JOHNSTON CO RWD #3 Tishomingo	Tishomingo	Groundwater	2	2,783	Yes
405	JAY Jay	Jay	Surface Water	2	2,482	Yes
406	HUGHES CO. RWD #6 (GERTY) Allen	Allen	Groundwater	2	2,180	Yes
407	ARKOMA Arkoma	Arkoma	Surface Water	2	2,180	Yes
408	CHELSEA ECONOMIC DEV. AUTH. Chelsea	Chelsea	Surface Water	2	1,964	Yes
409	BEAVER Beaver	Beaver	Groundwater	2	1,570	Yes
410	GARVIN CO RWD #2 Lindsay	Lindsay	Groundwater	2	1,570	Yes
411	GARVIN CO RWD #1 Pauls Valley	Pauls Valley	Groundwater	2	1,445	Yes
412	WAUKOMIS PWA Waukomis	Waukomis	Groundwater	2	1,366	Yes
413	BUCKHORN RWD #2 Sulphur	Sulphur	Groundwater	2	1,260	Yes
414	ROGERS CO RWD # 9 Claremore	Claremore	Surface Water	2	1,037	Yes
415	KAY CO RWD #3 Ponca City	Ponca City	Surface Water	2	1,000	Yes
416	POND CREEK Pond Creek	Pond Creek	Groundwater	2	982	Yes
417	CUSTER COUNTY RWD #3 Custer City	Custer City	Groundwater	2	960	Yes
418	CASHION Cashion	Cashion	Groundwater	2	900	Yes
419	PONTOTOC CO RWD # 6 (FITTSTOWN) Fittstown	Fittstown	Groundwater	2	896	Yes
420	WEST SILOAM SPRINGS Colcord	Colcord	Surface Water	2	877	Yes
421	KANSAS PUBLIC WORKS AUTHORITY Kansas	Kansas	Surface Water	2	802	Yes
422	DELAWARE CO RWD # 12 Jay	Jay	Groundwater	2	785	Yes
423	BARTLESVILLE Bartlesville	Bartlesville	Surface Water	1	34,748	Yes
424	WASHINGTON CO RWD #3 (NEW,#1) Collinsville	Collinsville	Surface Water	1	25,375	Yes
425	TINKER AIR FORCE BASE Oklahoma City	Oklahoma City	Groundwater	1	24,645	Yes
426	DEL CITY Del City	Del City	Surface Water	1	22,128	Yes
427	BIXBY PUBLIC WORKS AUTHORITY Bixby	Bixby	Surface Water	1	18,750	Yes
428	CUSHING Cushing	Cushing	Groundwater	1	8,371	Yes
429	FALLS CREEK BAPTIST CONFERENCE CENTER Oklahoma City	Oklahoma City	Surface Water	1	7,000	Yes
430	ALVA Alva	Alva	Groundwater	1	5,208	Yes
431	TRI-COUNTY RWD #2 Earlsboro	Earlsboro	Groundwater	1	5,172	Yes
432	PONTOTOC CO RWD # 7 Ada	Ada	Groundwater	1	4,863	Yes
433	OKLA ORDNANCE WORKS AUTHORITY Pryor	Pryor	Surface Water	1	4,000	Yes
434	MAYES CO RWD # 6 Big Cabin	Big Cabin	Surface Water	1	3,750	Yes
435	BRISTOW MUNICIPAL AUTHORITY Bristow	Bristow	Groundwater	1	3,700	Yes
436	CHEROKEE CO. RWD #11 Hulbert	Hulbert	Surface Water	1	3,395	Yes
437	STILWELL Stilwell	Stilwell	Surface Water	1	3,276	Yes
438	ROGERS CO RWD # 7 Claremore	Claremore	Surface Water	1	3,040	Yes
439	PAYNE CO RW CORP #3 Stillwater	Stillwater	Surface Water	1	3,000	Yes
440	NEWKIRK Newkirk	Newkirk	Groundwater	1	2,243	Yes
441	CHOUTEAU Chouteau	Chouteau	Surface Water	1	2,100	Yes
442	ADAIR CO RWD #1 (CHERRY TREE) Stilwell	Stilwell	Surface Water	1	2,000	Yes
443	PEGGS WATER COMPANY Hulbert	Hulbert	Surface Water	1	1,925	Yes
444	OKLA CHRISTIAN UNIVERSITY Edmond	Edmond	Groundwater	1	1,800	Yes
445	KAY CO RWD #1 Ponca City	Ponca City	Surface Water	1	1,765	Yes
446	MUSKOGEE CO. RWD #7 Fort Gibson	Fort Gibson	Surface Water	1	1,710	Yes
447	CANADIAN CO WATER AUTHORITY El Reno	El Reno	Surface Water	1	1,700	Yes
448	MINCO Minco	Minco	Groundwater	1	1,632	Yes
449	BECKHAM CO RWD # 3 Elk City	Elk City	Groundwater	1	1,617	Yes
450	ROGERS CO RWD # 6 Inola	Inola	Surface Water	1	1,560	Yes
451	MCINTOSH CO. RWD #13 (WELLS) Henryetta	Henryetta	Groundwater	1	1,465	Yes
452	THOMAS Thomas	Thomas	Groundwater	1	1,238	Yes
453	BUFFALO Buffalo	Buffalo	Groundwater	1	1,200	Yes
454	GERONIMO Geronimo	Geronimo	Surface Water	1	1,200	Yes
455	POTTAWATOMIE CO DEVELOPMENT AUTH Shawnee	Shawnee	Surface Water	1	1,200	Yes
456	CYRIL Cyril	Cyril	Groundwater	1	1,168	Yes
457	PONTOTOC CO RWD # 9 Stonewall	Stonewall	Groundwater	1	1,162	Yes
458	LOGAN CO RWD #2 Crescent	Crescent	Groundwater	1	1,146	Yes
459	LAVERNE Laverne	Laverne	Groundwater	1	1,097	Yes
460	SEQUOYAH CO. RWD #5 Gore	Gore	Surface Water	1	1,075	Yes
461	WASHITA CO RWD #2 Colony	Colony	Groundwater	1	1,032	Yes
462	WAYNOKA Waynoka	Waynoka	Groundwater	1	993	Yes
463	TEXHOMA Texhoma	Texhoma	Groundwater	1	935	Yes
464	SENTINEL PWS Sentinel	Sentinel	Groundwater	1	859	Yes
465	HOWARD MCLEOD CORRECTIONAL CENTER Atoka	Atoka	Groundwater	1	825	Yes
466	OKMULGEE CO. RWD #5 (BRYANT) Henryetta	Henryetta	Groundwater	1	750	Yes
467	DELAWARE CO RWSG&SWM DISTRICT 11 Twin Oaks	Twin Oaks	Surface Water	1	750	Yes

Systems with No Violations (33)

33 water systems in Oklahoma have zero recorded violations. Showing the 33 largest by population served.

OKLAHOMA CITY (644,000) TULSA (413,000) MIDWEST CITY (55,935) OKLAHOMA UNIVERSITY (34,000) ROGERS CO RWD # 5 (11,782) WAGONER CO. RWD #5 (4,251) ROGERS CO RWD # 8 (3,375) VANCE AFB (3,231) PAWNEE CO RWD #1 (3,200) CATOOSA (2,668) CREEK CO RWD # 5 (2,500) CHEROKEE CO. RWD #3 (GRANDVIEW) (2,300) TINKER AFB FAMILY HOUSING (2,100) KETCHUM PWA DELAWARE CO SYSTEM (1,805) MCCORD RWD #3 (1,800) GARVIN CO RWD # 6 (WELLS) (1,680) CONSOLIDATED RWD #1 NOWATA AND ROGERS CO (1,580) TULSA CO W IMP DIST #14 (1,400) WASHINGTON CO RWD #1 (1,375) DELAWARE CO RWD #10 (1,295) SPERRY (1,200) HUGHES CO. RWD #2 (1,145) MONTGOMERY CO RWD 2C A (1,113) ADAIR CO RWD #4 (1,025) ERICK (1,023) WISTER (1,002) PECAN VALLEY RWD (1,000) BRYAN CO. RWD #6 (990) CANADIAN CO RWD # 4 (907) Eastern Shawnee (796) ELMORE CITY (756) ADAIR (704) OSAGE CO RWS & SWD #3 (BRADEN) (700)

All Water Systems in Oklahoma (883)

Page 2 of 18, ordered by population served.

System	Population Served	Violations
ROGERS CO RWD # 3 COT STA	10,750	4
ELK CITY	10,510	3
ROGERS CO RWD # 3 LAKE PLANT	10,470	73
GUTHRIE	9,925	9
COWETA PWA	9,450	180
LEFLORE CO. RWD #14	9,077	65
LOGAN CO RWD #1	8,907	6
CLINTON	8,883	12
PRYOR	8,784	5
SALLISAW	8,510	6
JEFFERSON CO CONS RWD #1	8,398	139
CUSHING	8,371	1
OKMULGEE CO. RWD #6 (HECTORVILLE)	8,370	128
BRYAN COUNTY RURAL WATER DISTRICT #5	8,325	54
SKIATOOK PWA	8,110	15
WAGONER	7,982	3
POTEAU PWA	7,939	115
NEWCASTLE	7,900	6
ROGERS CO RWD # 4	7,725	6
BLACKWELL MUNICIPAL AUTHORITY	7,668	56
PIEDMONT MUNICIPAL AUTHORITY	7,542	39
GROVE MUNICIPAL SERVICES AUTH.	7,311	7
FALLS CREEK BAPTIST CONFERENCE CENTER	7,000	1
IDABEL PWA	6,952	190
SEMINOLE	6,899	2
ANADARKO PUBLIC WORKS AUTHORITY	6,804	104
PURCELL	6,693	4
OSAGE CO RWD #15	6,647	16
VINITA UTILITIES AUTHORITY	6,472	17
STEPHENS CO RWD #5	6,426	7
MAYES CO RWD # 2	6,280	2
BRYAN CO. RWS & SWMD #2	6,270	43
PAULS VALLEY	6,256	20
TECUMSEH UTILITY AUTHORITY	6,098	114
HENRYETTA	6,096	92
SAPULPA RURAL WATER COMPANY	5,810	8
NOBLE UTILITIES AUTHORITY	5,750	7
MCCURTAIN CO. RWD #8 (MT. FORK WATER)	5,685	25
CREEK CO RWD # 1	5,675	10
HUGO MUNICIPAL AUTHORITY	5,536	158
DEER CREEK RURAL WATER CORP	5,500	3
LONGTOWN RW&SD #1 (PITTSBURG CO.)	5,444	46
COLLINSVILLE	5,400	10
PERRY WATER & LIGHT DEPT	5,230	110
ALVA	5,208	1
TRI-COUNTY RWD #2	5,172	1
KINGFISHER	5,073	60
PORUM PWA	5,000	7
SULPHUR	4,929	3
PONTOTOC CO RWD # 7	4,863	1

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Frequently Asked Questions

How many water systems are in Oklahoma?

Oklahoma has 883 community water systems tracked by the EPA, serving a combined population of 3,655,246 people.

How many water systems in Oklahoma have health violations?

812 water systems in Oklahoma have health-based violations, which include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. These represent 92% of all systems in the state.

What is the total number of water violations in Oklahoma?

Oklahoma water systems have accumulated 28,341 total violations across all 883 community water systems.

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About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Only community water systems (CWS) are included.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

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