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Lead Contamination

Lead in Oklahoma Drinking Water

Ranked by 90th percentile lead level (ppb) · Data from EPA SDWIS & UCMR

358
Cities Tested
4
Exceeds Limit
1%
% Exceeds Limit
1.7 ppb
State Avg
▼ 1% vs national
vs National
351
Health Violations
Analysis

Lead in Oklahoma: what the data shows

Oklahoma has 358 cities with lead monitoring data, with very few cities exceeding the EPA action level of 15 ppb. The state average 90th percentile lead level is 1.7 ppb, compared to 3.3 ppb nationally — better than the national average. 4 cities exceed the 15 ppb action level. High lead levels in tap water typically indicate aging infrastructure — lead service lines, lead solder in older plumbing, or lead-containing brass fixtures. There is no safe level of lead exposure for children. The 90th percentile measurement means that 90% of tap samples in a city are at or below the reported level. This is the standard EPA uses under the Lead and Copper Rule to determine if a water system needs to take corrective action. An NSF 53-certified pitcher or under-sink filter can effectively remove lead at the tap.

Comparison

Cities exceeding 15 ppb EPA Action Level

Oklahoma
1%
4 of 358 cities
← ▼ 1% below national rate (better)
National avg
2%
378 of 15681 cities
City Map

Lead data across Oklahoma

Each dot is a city, colored by overall water quality grade. Cities with lead levels above the 15 ppb EPA action level are highlighted. Size reflects population served.

Worst Offenders

Top 10 cities by lead level in Oklahoma

Highest Lead levels (ppb)

  1. 1 F Ratliff City 33.1 ppb Yes 2K
  2. 2 F Tecumseh 20.5 ppb Yes 6K
  3. 3 F Ardmore 19.2 ppb Yes 36K
  4. 4 D Blanchard 17.0 ppb Yes 3K
  5. 5 D+ Okeene 11.6 ppb 2K
  6. 6 F Choctaw 11.4 ppb 4K
  7. 7 B Forgan 11.1 ppb 532
  8. 8 B Carnegie 8.7 ppb 6K
  9. 9 F Broken Bow 7.9 ppb 12K
  10. 10 D Mcloud 7.4 ppb 3K
All Cities

All Oklahoma cities ranked by lead level

# City Level Level Exceeds? Violations Grade
1 Ratliff City 33.1 ppb
Yes 45
F
2 Tecumseh 20.5 ppb
Yes 142
F
3 Ardmore 19.2 ppb
Yes 188
F
4 Blanchard 17.0 ppb
Yes 12
D
5 Okeene 11.6 ppb
No 114
D+
6 Choctaw 11.4 ppb
No 3
F
7 Forgan 11.1 ppb
No 4
B
8 Carnegie 8.7 ppb
No 9
B
9 Broken Bow 7.9 ppb
No 122
F
10 Mcloud 7.4 ppb
No 14
D
11 Okarche 7.4 ppb
No 236
F
12 Fittstown 7.0 ppb
No 2
B
13 Coalgate 6.9 ppb
No 87
D
14 Waukomis 6.8 ppb
No 2
A-
15 Dill City 6.8 ppb
No 24
C-
16 Covington 6.7 ppb
No 1
B+
17 Lexington 6.5 ppb
No 16
F
18 Custer City 6.5 ppb
No 2
B
19 Hydro 6.4 ppb
No 11
C-
20 Binger 6.0 ppb
No 2
B
21 Sapulpa 5.9 ppb
No 85
D
22 Mannsville 5.9 ppb
No 4
A-
23 Barnsdall 5.7 ppb
No 448
D
24 Wellston 5.7 ppb
No 71
F
25 Beggs 5.7 ppb
No 176
D
26 Pond Creek 5.5 ppb
No 3
C+
27 Muskogee 5.4 ppb
No 246
D
28 Ochelata 5.3 ppb
No 41
D
29 Snyder 5.2 ppb
No 129
D
30 Bristow 5.0 ppb
No 5
D
31 Enid 4.9 ppb
No 33
F
32 Konawa 4.8 ppb
No 19
D
33 Guthrie 4.6 ppb
No 45
F
34 Cleveland 4.6 ppb
No 182
F
35 Paoli 4.6 ppb
No 7
C+
36 Oklahoma City 4.5 ppb
No 56
F
37 Washington 4.5 ppb
No 8
C
38 Colbert 4.4 ppb
No 4
C+
39 Chelsea 4.3 ppb
No 10
A-
40 Stuart 4.2 ppb
No 96
C-
41 Wagoner 4.0 ppb
No 141
F
42 Earlsboro 4.0 ppb
No 4
C+
43 Colony 3.9 ppb
No 3
B+
44 Glencoe 3.8 ppb
No 105
D
45 Chickasha 3.8 ppb
No 79
F
46 Bartlesville 3.7 ppb
No 217
F
47 Pawhuska 3.6 ppb
No 34
D+
48 Davenport 3.6 ppb
No 108
D
49 Tishomingo 3.6 ppb
No 56
D
50 Crescent 3.5 ppb
No 82
C+
51 Gould 3.5 ppb
No 28
C-
52 Henryetta 3.4 ppb
No 116
F
53 Quinton 3.4 ppb
No 42
D
54 Perkins 3.3 ppb
No 1
D
55 Marland 3.3 ppb
No 10
D+
56 Antlers 3.3 ppb
No 229
D+
57 Ramona 3.2 ppb
No 42
D
58 Elmore City 3.1 ppb
No 31
A-
59 Durant 3.1 ppb
No 104
D
60 Okmulgee 3.1 ppb
No 262
D
61 Nashoba 3.1 ppb
No 82
F
62 Claremore 3.0 ppb
No 153
F
63 Cashion 3.0 ppb
No 2
A-
64 Stillwater 2.9 ppb
No 72
F
65 Hartshorne 2.9 ppb
No 103
D+
66 Drumright 2.8 ppb
No 3
A-
67 Tyrone 2.8 ppb
No 6
B
68 South Coffeyville 2.7 ppb
No 3
A-
69 Thackerville 2.6 ppb
No 4
A
70 Tuttle 2.6 ppb
No 46
D
71 Talihina 2.6 ppb
No 295
D
72 Braggs 2.6 ppb
No 2
B+
73 Thomas 2.5 ppb
No 0
A+
74 Geronimo 2.4 ppb
No 1
B
75 Madill 2.4 ppb
No 178
F
76 Newcastle 2.4 ppb
No 5
A-
77 Mooreland 2.4 ppb
No 59
D+
78 Chattanooga 2.3 ppb
No 44
D+
79 Fairfax 2.3 ppb
No 254
D
80 Copan 2.3 ppb
No 62
D
81 Allen 2.2 ppb
No 5
A-
82 Sayre 2.2 ppb
No 2
A
83 Chandler 2.2 ppb
No 150
D
84 Blair 2.2 ppb
No 38
D
85 Haileyville 2.2 ppb
No 35
D+
86 Stratford 2.1 ppb
No 4
A-
87 Eufaula 2.1 ppb
No 374
F
88 Agra 2.1 ppb
No 2
B+
89 Verden 2.1 ppb
No 10
A
90 Tupelo 2.0 ppb
No 10
C+
91 Boley 2.0 ppb
No 6
D+
92 Broken Arrow 2.0 ppb
No 113
F
93 El Reno 2.0 ppb
No 49
D
94 Bison 2.0 ppb
No 29
A
95 Laverne 2.0 ppb
No 3
C
96 Hennepin 2.0 ppb
No 52
D
97 Wayne 2.0 ppb
No 28
C
98 Hugo 1.9 ppb
No 166
D+
99 Mounds 1.9 ppb
No 219
D+
100 Dewey 1.9 ppb
No 23
F
101 Okay 1.9 ppb
No 63
D+
102 Depew 1.9 ppb
No 7
A-
103 Albion 1.9 ppb
No 73
D
104 Poteau 1.9 ppb
No 56
D
105 Kiowa 1.8 ppb
No 197
D
106 Wilson 1.8 ppb
No 4
B+
107 Tahlequah 1.8 ppb
No 56
F
108 Holdenville 1.8 ppb
No 148
D+
109 Frederick 1.8 ppb
No 104
D+
110 Watonga 1.8 ppb
No 27
C+
111 Kansas 1.8 ppb
No 7
D
112 Coleman 1.8 ppb
No 3
B+
113 Cyril 1.8 ppb
No 1
B
114 Ada 1.7 ppb
No 6
B-
115 Seminole 1.7 ppb
No 4
A
116 Pauls Valley 1.7 ppb
No 103
C-
117 Adair 1.7 ppb
No 35
B+
118 Haskell 1.7 ppb
No 109
D
119 Medford 1.7 ppb
No 9
C-
120 Council Hill 1.7 ppb
No 177
D+
121 Caddo 1.7 ppb
No 11
C-
122 Del City 1.6 ppb
No 12
F
123 Westville 1.6 ppb
No 23
D
124 Sperry 1.6 ppb
No 0
A-
125 Smithville 1.6 ppb
No 24
C
126 Cache 1.5 ppb
No 64
F
127 Clinton 1.5 ppb
No 31
D+
128 Ketchum 1.5 ppb
No 5
A
129 Idabel 1.4 ppb
No 123
D
130 Jenks 1.4 ppb
No 31
B-
131 Checotah 1.4 ppb
No 365
D
132 Healdton 1.4 ppb
No 44
A-
133 Porter 1.4 ppb
No 52
D
134 Colcord 1.4 ppb
No 15
D
135 Velma 1.4 ppb
No 1
B+
136 Stringtown 1.3 ppb
No 144
D+
137 Sulphur 1.3 ppb
No 2
A-
138 Cushing 1.3 ppb
No 1
A-
139 Noble 1.3 ppb
No 160
D
140 Walters 1.3 ppb
No 104
D+
141 Hobart 1.3 ppb
No 9
A
142 Langley 1.3 ppb
No 17
B+
143 Fort Towson 1.3 ppb
No 10
B-
144 Red Rock 1.3 ppb
No 166
D
145 Marietta 1.3 ppb
No 4
A
146 Rush Springs 1.3 ppb
No 5
A
147 Mangum 1.3 ppb
No 7
C+
148 Tulsa 1.2 ppb
No 6
D
149 Midwest City 1.2 ppb
No 11
B+
150 Nowata 1.2 ppb
No 254
F
151 Alva 1.2 ppb
No 6
B-
152 Afton 1.2 ppb
No 89
F
153 Coffeyville 1.2 ppb
No 18
F
154 Monroe 1.2 ppb
No 12
B-
155 Morrison 1.2 ppb
No 4
B-
156 Texhoma 1.2 ppb
No 0
A
157 Granite 1.2 ppb
No 91
D+
158 Wynnewood 1.2 ppb
No 85
D
159 Fort Sill 1.2 ppb
No 4
A
160 Hodgen 1.1 ppb
No 41
D
161 Davis 1.1 ppb
No 19
C
162 Sallisaw 1.1 ppb
No 29
D+
163 Harrah 1.1 ppb
No 61
D
164 Jay 1.1 ppb
No 87
D
165 Garber 1.1 ppb
No 39
B-
166 Erick 1.1 ppb
No 4
D+
167 Terlton 1.1 ppb
No 50
D+
168 Buffalo 1.1 ppb
No 16
D+
169 Heavener 1.1 ppb
No 59
D
170 Tipton 1.1 ppb
No 136
D
171 Vinita 1.0 ppb
No 114
D
172 Tonkawa 1.0 ppb
No 6
B-
173 Commerce 1.0 ppb
No 6
B+
174 Goodwell 1.0 ppb
No 15
C+
175 Hennessey 1.0 ppb
No 70
B-
176 Yale 1.0 ppb
No 116
D
177 Mutual 1.0 ppb
No 6
C+
178 Haworth 1.0 ppb
No 67
D
179 Comanche 1.0 ppb
No 102
D
180 Cement 0.9 ppb
No 1
B+
181 Roff 0.9 ppb
No 4
B
182 Weatherford 0.9 ppb
No 71
D
183 Hollis 0.9 ppb
No 148
D+
184 Carter 0.9 ppb
No 28
B+
185 Boswell 0.9 ppb
No 185
D
186 Stilwell 0.9 ppb
No 18
C
187 Calera 0.8 ppb
No 35
D+
188 Grant 0.8 ppb
No 25
C
189 Wright City 0.8 ppb
No 33
D
190 Edmond 0.8 ppb
No 86
F
191 Wetumka 0.7 ppb
No 138
D
192 Dearing 0.7 ppb
No 4
B
193 Savanna 0.7 ppb
No 11
C
194 Sentinel 0.6 ppb
No 1
A
195 Clayton 0.6 ppb
No 270
D
196 Lawton 0.6 ppb
No 23
F
197 Cookson 0.6 ppb
No 102
D
198 Dewar 0.6 ppb
No 20
C
199 Mead 0.6 ppb
No 106
D+
200 Norman 0.6 ppb
No 52
F
201 Stonewall 0.5 ppb
No 2
C+
202 Mountain View 0.5 ppb
No 6
B+
203 Atoka 0.5 ppb
No 269
D+
204 Kingston 0.5 ppb
No 5
B+
205 Owasso 0.5 ppb
No 8
C+
206 Wewoka 0.3 ppb
No 340
D+
207 Catoosa 0.2 ppb
No 2
A-
208 Okemah 0.1 ppb
No 71
D
209 Weleetka 0.0 ppb
No 187
D
210 Moore 0.0 ppb
No 53
F
211 Ponca City 0.0 ppb
No 23
F
212 Shawnee 0.0 ppb
No 124
D
213 Collinsville 0.0 ppb
No 24
C+
214 Sand Springs 0.0 ppb
No 20
B
215 Mcalester 0.0 ppb
No 670
F
216 Altus 0.0 ppb
No 162
D
217 Yukon 0.0 ppb
No 18
D
218 Duncan 0.0 ppb
No 150
D+
219 Bethany 0.0 ppb
No 14
B+
220 Bixby 0.0 ppb
No 1
B
221 Mustang 0.0 ppb
No 9
C+
222 Pryor 0.0 ppb
No 17
D
223 Woodward 0.0 ppb
No 55
D
224 Skiatook 0.0 ppb
No 72
B-
225 Miami 0.0 ppb
No 11
D
226 Coweta 0.0 ppb
No 180
D
227 Spiro 0.0 ppb
No 166
D+
228 Glenpool 0.0 ppb
No 9
A
229 Elk City 0.0 ppb
No 5
D
230 Guymon 0.0 ppb
No 10
A-
231 Marlow 0.0 ppb
No 11
B
232 Blackwell 0.0 ppb
No 65
D+
233 Hastings 0.0 ppb
No 63
D+
234 Chouteau 0.0 ppb
No 9
B-
235 Grove 0.0 ppb
No 20
D
236 Hulbert 0.0 ppb
No 117
D
237 Fort Gibson 0.0 ppb
No 153
F
238 Oologah 0.0 ppb
No 32
B-
239 Perry 0.0 ppb
No 129
D
240 Piedmont 0.0 ppb
No 32
C-
241 Anadarko 0.0 ppb
No 83
D+
242 Purcell 0.0 ppb
No 1
A-
243 Mannford 0.0 ppb
No 93
B-
244 Muldrow 0.0 ppb
No 39
C
245 Wilburton 0.0 ppb
No 60
D
246 Morris 0.0 ppb
No 229
D
247 Kellyville 0.0 ppb
No 32
B-
248 Kingfisher 0.0 ppb
No 38
D
249 Elgin 0.0 ppb
No 13
D+
250 Wister 0.0 ppb
No 84
D
251 Locust Grove 0.0 ppb
No 103
D
252 Porum 0.0 ppb
No 45
B-
253 Lone Grove 0.0 ppb
No 4
B+
254 Pocola 0.0 ppb
No 43
D+
255 Lindsay 0.0 ppb
No 6
A-
256 Amber 0.0 ppb
No 30
D
257 Big Cabin 0.0 ppb
No 39
D+
258 Pawnee 0.0 ppb
No 276
D
259 Nichols Hills 0.0 ppb
No 21
D
260 Spencer 0.0 ppb
No 5
C
261 Fairview 0.0 ppb
No 97
D
262 Stroud 0.0 ppb
No 156
D+
263 Inola 0.0 ppb
No 20
C-
264 Gore 0.0 ppb
No 35
D+
265 Newkirk 0.0 ppb
No 39
F
266 Cordell 0.0 ppb
No 46
C+
267 Fairland 0.0 ppb
No 11
D
268 Roland 0.0 ppb
No 39
A-
269 Stigler 0.0 ppb
No 30
B
270 Hinton 0.0 ppb
No 47
D+
271 Hominy 0.0 ppb
No 235
D
272 Wainwright 0.0 ppb
No 97
D+
273 Bowlegs 0.0 ppb
No 9
B+
274 Ninnekah 0.0 ppb
No 9
B+
275 Disney 0.0 ppb
No 22
B
276 Prague 0.0 ppb
No 10
D+
277 Preston 0.0 ppb
No 80
D
278 Oktaha 0.0 ppb
No 67
D+
279 Crowder 0.0 ppb
No 91
C+
280 Arkoma 0.0 ppb
No 2
B+
281 Wyandotte 0.0 ppb
No 5
D
282 Tinker Afb 0.0 ppb
No 0
B+
283 Waurika 0.0 ppb
No 174
D+
284 Burns Flat 0.0 ppb
No 1
A-
285 Krebs 0.0 ppb
No 68
D+
286 Warner 0.0 ppb
No 73
B-
287 Goldsby 0.0 ppb
No 17
B+
288 Indianola 0.0 ppb
No 10
B-
289 Garvin 0.0 ppb
No 43
D
290 Valliant 0.0 ppb
No 54
D
291 Shidler 0.0 ppb
No 145
D
292 Welch 0.0 ppb
No 81
D+
293 Schulter 0.0 ppb
No 102
D+
294 Marshall 0.0 ppb
No 10
B-
295 Hooker 0.0 ppb
No 0
A-
296 Jones 0.0 ppb
No 11
B+
297 Langston 0.0 ppb
No 69
C
298 Whitesboro 0.0 ppb
No 63
D
299 Minco 0.0 ppb
No 6
B+
300 Cherokee 0.0 ppb
No 15
B+
301 Howe 0.0 ppb
No 16
B-
302 Beaver 0.0 ppb
No 1
B
303 Apache 0.0 ppb
No 34
C-
304 Boise City 0.0 ppb
No 2
D+
305 Vian 0.0 ppb
No 7
D+
306 Oilton 0.0 ppb
No 4
D+
307 Salina 0.0 ppb
No 68
B+
308 Panama 0.0 ppb
No 24
C
309 Calumet 0.0 ppb
No 117
D
310 Geary 0.0 ppb
No 74
D
311 Ringling 0.0 ppb
No 8
B
312 Leedey 0.0 ppb
No 6
B
313 Maysville 0.0 ppb
No 184
D+
314 Shattuck 0.0 ppb
No 11
B
315 Webbers Falls 0.0 ppb
No 29
B+
316 Byron 0.0 ppb
No 33
B
317 Temple 0.0 ppb
No 95
D+
318 Maud 0.0 ppb
No 9
B+
319 Grandfield 0.0 ppb
No 152
D+
320 Quapaw 0.0 ppb
No 9
D
321 Meeker 0.0 ppb
No 14
A-
322 Stillwell 0.0 ppb
No 0
B+
323 Fletcher 0.0 ppb
No 7
C
324 Red Oak 0.0 ppb
No 116
D
325 Waynoka 0.0 ppb
No 27
A-
326 Cheyenne 0.0 ppb
No 64
D
327 Kremlin 0.0 ppb
No 25
F
328 Seiling 0.0 ppb
No 23
A-
329 Hendrix 0.0 ppb
No 5
D
330 Ryan 0.0 ppb
No 156
D+
331 Butler 0.0 ppb
No 1
B-
332 Sterling 0.0 ppb
No 9
A-
333 Millerton 0.0 ppb
No 39
F
334 Canton 0.0 ppb
No 1
B+
335 Twin Oaks 0.0 ppb
No 1
C+
336 Arapaho 0.0 ppb
No 3
A-
337 Duke 0.0 ppb
No 46
D
338 Vici 0.0 ppb
No 6
B+
339 Fort Cobb 0.0 ppb
No 4
A-
340 Luther 0.0 ppb
No 9
A-
341 Carney 0.0 ppb
No 14
A-
342 Alex 0.0 ppb
No 2
C
343 Union City 0.0 ppb
No 24
D
344 Olustee 0.0 ppb
No 62
D
345 Gans 0.0 ppb
No 6
B
346 Lahoma 0.0 ppb
No 0
A-
347 Oakhurst 0.0 ppb
No 22
C
348 Hammon 0.0 ppb
No 1
B+
349 Bokchito 0.0 ppb
No 4
A
350 Keota 0.0 ppb
No 50
D
351 Mccurtain 0.0 ppb
No 69
D
352 Dibble 0.0 ppb
No 3
A-
353 Osage 0.0 ppb
No 21
D+
354 Canute 0.0 ppb
No 23
D+
355 Boynton 0.0 ppb
No 112
D
356 Achille 0.0 ppb
No 2
A-
357 Bernice 0.0 ppb
No 6
C
358 Corn 0.0 ppb
No 14
B
FAQ

Frequently asked questions about lead in Oklahoma

Is lead in Oklahoma tap water a concern?

Yes — 4 of 358 cities with lead data exceed the EPA action level of 15 ppb. The state average is 1.7 ppb. Even below the action level, lead poses health risks especially for children and pregnant women. If your home was built before 1986, consider testing your tap water directly.

How can I reduce lead exposure from Oklahoma tap water?

Use an NSF 53-certified water filter, which is specifically certified to reduce lead. Run your cold tap for 30 seconds before drinking or cooking, especially if water has been sitting in pipes for hours. Never use hot tap water for cooking or making baby formula, as heat increases lead leaching from pipes.

Which Oklahoma cities have the highest lead levels?

The cities with the highest 90th percentile lead levels in Oklahoma are: Ratliff City (33.1 ppb), Tecumseh (20.5 ppb), Ardmore (19.2 ppb), Blanchard (17.0 ppb), Okeene (11.6 ppb). See the full ranked table above.

More contaminants

Other contaminants in Oklahoma

PFAS in Oklahoma
Ranked by compounds detected
→
Copper in Oklahoma
Ranked by 90th percentile level (mg/L)
→
HAA5 in Oklahoma
Ranked by average concentration (µg/L)
→
Chromium-6 in Oklahoma
Ranked by max detected (µg/L)
→
Arsenic in Oklahoma
Ranked by violation count
→
Nitrate in Oklahoma
Ranked by violation count
→
Strontium in Oklahoma
Ranked by max detected (µg/L)
→
1,4-Dioxane in Oklahoma
Ranked by max detected (µg/L)
→
Manganese in Oklahoma
Ranked by max detected (µg/L)
→
Vanadium in Oklahoma
Ranked by max detected (µg/L)
→
Chlorate in Oklahoma
Ranked by max detected (µg/L)
→
Molybdenum in Oklahoma
Ranked by max detected (µg/L)
→
Cobalt in Oklahoma
Ranked by max detected (µg/L)
→
Lithium in Oklahoma
Ranked by max detected (µg/L)
→
NDMA in Oklahoma
Ranked by max detected (ng/L)
→
Perchlorate in Oklahoma
Ranked by max detected (µg/L)
→
All states

Lead in drinking water by state

AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaQCRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming
← Lead contamination overview Explore Oklahoma water quality → National Lead map →