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Lead Contamination

Lead in Oklahoma Drinking Water

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

357
Cities Tested
4
Exceeds Limit
1%
% Exceeds Limit
1.7 ppb
State Avg
▼ 1% vs national
vs National
350
Health Violations
Analysis

Lead in Oklahoma: what the data shows

Oklahoma has 357 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 357 cities
← ▼ 1% below national rate (better)
National avg
2%
352 of 15325 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 Monroe 1.2 ppb
No 12
B-
154 Coffeyville 1.2 ppb
No 18
F
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 Savanna 0.7 ppb
No 11
C
193 Sentinel 0.6 ppb
No 1
A
194 Clayton 0.6 ppb
No 270
D
195 Lawton 0.6 ppb
No 23
F
196 Cookson 0.6 ppb
No 102
D
197 Dewar 0.6 ppb
No 20
C
198 Mead 0.6 ppb
No 106
D+
199 Norman 0.6 ppb
No 52
F
200 Stonewall 0.5 ppb
No 2
C+
201 Mountain View 0.5 ppb
No 6
B+
202 Atoka 0.5 ppb
No 269
D+
203 Kingston 0.5 ppb
No 5
B+
204 Owasso 0.5 ppb
No 8
C+
205 Wewoka 0.3 ppb
No 340
D+
206 Catoosa 0.2 ppb
No 2
A-
207 Okemah 0.1 ppb
No 71
D
208 Weleetka 0.0 ppb
No 187
D
209 Moore 0.0 ppb
No 53
F
210 Ponca City 0.0 ppb
No 23
F
211 Shawnee 0.0 ppb
No 124
D
212 Collinsville 0.0 ppb
No 24
C+
213 Sand Springs 0.0 ppb
No 20
B
214 Mcalester 0.0 ppb
No 670
F
215 Altus 0.0 ppb
No 162
D
216 Yukon 0.0 ppb
No 18
D
217 Duncan 0.0 ppb
No 150
D+
218 Bethany 0.0 ppb
No 14
B+
219 Bixby 0.0 ppb
No 1
B
220 Mustang 0.0 ppb
No 9
C+
221 Pryor 0.0 ppb
No 17
D
222 Woodward 0.0 ppb
No 55
D
223 Skiatook 0.0 ppb
No 72
B-
224 Miami 0.0 ppb
No 11
D
225 Coweta 0.0 ppb
No 180
D
226 Spiro 0.0 ppb
No 166
D+
227 Glenpool 0.0 ppb
No 9
A
228 Elk City 0.0 ppb
No 5
D
229 Guymon 0.0 ppb
No 10
A-
230 Marlow 0.0 ppb
No 11
B
231 Blackwell 0.0 ppb
No 65
D+
232 Hastings 0.0 ppb
No 63
D+
233 Chouteau 0.0 ppb
No 9
B-
234 Grove 0.0 ppb
No 20
D
235 Hulbert 0.0 ppb
No 117
D
236 Fort Gibson 0.0 ppb
No 153
F
237 Oologah 0.0 ppb
No 32
B-
238 Perry 0.0 ppb
No 129
D
239 Piedmont 0.0 ppb
No 32
C-
240 Anadarko 0.0 ppb
No 83
D+
241 Purcell 0.0 ppb
No 1
A-
242 Mannford 0.0 ppb
No 93
B-
243 Muldrow 0.0 ppb
No 39
C
244 Wilburton 0.0 ppb
No 60
D
245 Morris 0.0 ppb
No 229
D
246 Kellyville 0.0 ppb
No 32
B-
247 Kingfisher 0.0 ppb
No 38
D
248 Elgin 0.0 ppb
No 13
D+
249 Wister 0.0 ppb
No 84
D
250 Locust Grove 0.0 ppb
No 103
D
251 Porum 0.0 ppb
No 45
B-
252 Lone Grove 0.0 ppb
No 4
B+
253 Pocola 0.0 ppb
No 43
D+
254 Lindsay 0.0 ppb
No 6
A-
255 Amber 0.0 ppb
No 30
D
256 Big Cabin 0.0 ppb
No 39
D+
257 Pawnee 0.0 ppb
No 276
D
258 Nichols Hills 0.0 ppb
No 21
D
259 Spencer 0.0 ppb
No 5
C
260 Fairview 0.0 ppb
No 97
D
261 Stroud 0.0 ppb
No 156
D+
262 Inola 0.0 ppb
No 20
C-
263 Gore 0.0 ppb
No 35
D+
264 Newkirk 0.0 ppb
No 39
F
265 Cordell 0.0 ppb
No 46
C+
266 Fairland 0.0 ppb
No 11
D
267 Roland 0.0 ppb
No 39
A-
268 Stigler 0.0 ppb
No 30
B
269 Hinton 0.0 ppb
No 47
D+
270 Hominy 0.0 ppb
No 235
D
271 Wainwright 0.0 ppb
No 97
D+
272 Bowlegs 0.0 ppb
No 9
B+
273 Ninnekah 0.0 ppb
No 9
B+
274 Disney 0.0 ppb
No 22
B
275 Prague 0.0 ppb
No 10
D+
276 Preston 0.0 ppb
No 80
D
277 Oktaha 0.0 ppb
No 67
D+
278 Crowder 0.0 ppb
No 91
C+
279 Arkoma 0.0 ppb
No 2
B+
280 Wyandotte 0.0 ppb
No 5
D
281 Tinker Afb 0.0 ppb
No 0
B+
282 Waurika 0.0 ppb
No 174
D+
283 Burns Flat 0.0 ppb
No 1
A-
284 Krebs 0.0 ppb
No 68
D+
285 Warner 0.0 ppb
No 73
B-
286 Goldsby 0.0 ppb
No 17
B+
287 Indianola 0.0 ppb
No 10
B-
288 Garvin 0.0 ppb
No 43
D
289 Valliant 0.0 ppb
No 54
D
290 Shidler 0.0 ppb
No 145
D
291 Welch 0.0 ppb
No 81
D+
292 Schulter 0.0 ppb
No 102
D+
293 Marshall 0.0 ppb
No 10
B-
294 Hooker 0.0 ppb
No 0
A-
295 Jones 0.0 ppb
No 11
B+
296 Langston 0.0 ppb
No 69
C
297 Whitesboro 0.0 ppb
No 63
D
298 Minco 0.0 ppb
No 6
B+
299 Cherokee 0.0 ppb
No 15
B+
300 Howe 0.0 ppb
No 16
B-
301 Beaver 0.0 ppb
No 1
B
302 Apache 0.0 ppb
No 34
C-
303 Boise City 0.0 ppb
No 2
D+
304 Vian 0.0 ppb
No 7
D+
305 Oilton 0.0 ppb
No 4
D+
306 Salina 0.0 ppb
No 68
B+
307 Panama 0.0 ppb
No 24
C
308 Calumet 0.0 ppb
No 117
D
309 Geary 0.0 ppb
No 74
D
310 Ringling 0.0 ppb
No 8
B
311 Leedey 0.0 ppb
No 6
B
312 Maysville 0.0 ppb
No 184
D+
313 Shattuck 0.0 ppb
No 11
B
314 Webbers Falls 0.0 ppb
No 29
B+
315 Byron 0.0 ppb
No 33
B
316 Temple 0.0 ppb
No 95
D+
317 Maud 0.0 ppb
No 9
B+
318 Grandfield 0.0 ppb
No 152
D+
319 Quapaw 0.0 ppb
No 9
D
320 Meeker 0.0 ppb
No 14
A-
321 Stillwell 0.0 ppb
No 0
B+
322 Fletcher 0.0 ppb
No 7
C
323 Red Oak 0.0 ppb
No 116
D
324 Waynoka 0.0 ppb
No 27
A-
325 Cheyenne 0.0 ppb
No 64
D
326 Kremlin 0.0 ppb
No 25
F
327 Seiling 0.0 ppb
No 23
A-
328 Hendrix 0.0 ppb
No 5
D
329 Ryan 0.0 ppb
No 156
D+
330 Butler 0.0 ppb
No 1
B-
331 Sterling 0.0 ppb
No 9
A-
332 Millerton 0.0 ppb
No 39
F
333 Canton 0.0 ppb
No 1
B+
334 Twin Oaks 0.0 ppb
No 1
C+
335 Arapaho 0.0 ppb
No 3
A-
336 Duke 0.0 ppb
No 46
D
337 Vici 0.0 ppb
No 6
B+
338 Fort Cobb 0.0 ppb
No 4
A-
339 Luther 0.0 ppb
No 9
A-
340 Carney 0.0 ppb
No 14
A-
341 Alex 0.0 ppb
No 2
C
342 Union City 0.0 ppb
No 24
D
343 Olustee 0.0 ppb
No 62
D
344 Gans 0.0 ppb
No 6
B
345 Lahoma 0.0 ppb
No 0
A-
346 Oakhurst 0.0 ppb
No 22
C
347 Hammon 0.0 ppb
No 1
B+
348 Bokchito 0.0 ppb
No 4
A
349 Keota 0.0 ppb
No 50
D
350 Mccurtain 0.0 ppb
No 69
D
351 Dibble 0.0 ppb
No 3
A-
352 Osage 0.0 ppb
No 21
D+
353 Canute 0.0 ppb
No 23
D+
354 Boynton 0.0 ppb
No 112
D
355 Achille 0.0 ppb
No 2
A-
356 Bernice 0.0 ppb
No 6
C
357 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 357 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 DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming
← Lead contamination overview Explore Oklahoma water quality → National Lead map →