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Lead Contamination

Lead in Arizona Drinking Water

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

292
Cities Tested
3
Exceeds Limit
1%
% Exceeds Limit
1.8 ppb
State Avg
▼ 1% vs national
vs National
241
Health Violations
Analysis

Lead in Arizona: what the data shows

Arizona has 292 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 1.8 ppb, compared to 3.3 ppb nationally — better than the national average. 3 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

Arizona
1%
3 of 292 cities
← ▼ 1% below national rate (better)
National avg
2%
378 of 15681 cities
City Map

Lead data across Arizona

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 Arizona

Highest Lead levels (ppb)

  1. 1 F Black Canyon City 50.0 ppb Yes 3K
  2. 2 F Pima 32.0 ppb Yes 5K
  3. 3 C- Mammoth 19.0 ppb Yes 1K
  4. 4 F Florence 12.0 ppb 23K
  5. 5 B+ Mariano Lake, Pinedale, Churchrock 12.0 ppb 5K
  6. 6 B+ Mariano Lake, Pinedale, Churchrock 12.0 ppb 5K
  7. 7 F Heber 11.0 ppb 17K
  8. 8 F Springerville 11.0 ppb 2K
  9. 9 F Cornville 10.0 ppb 3K
  10. 10 D Bonita 9.5 ppb 800
All Cities

All Arizona cities ranked by lead level

# City Level Level Exceeds? Violations Grade
1 Black Canyon City 50.0 ppb
Yes 16
F
2 Pima 32.0 ppb
Yes 11
F
3 Mammoth 19.0 ppb
Yes 2
C-
4 Florence 12.0 ppb
No 60
F
5 Mariano Lake, Pinedale, Churchrock 12.0 ppb
No 4
B+
6 Mariano Lake, Pinedale, Churchrock 12.0 ppb
No 4
B+
7 Heber 11.0 ppb
No 11
F
8 Springerville 11.0 ppb
No 16
F
9 Cornville 10.0 ppb
No 21
F
10 Bonita 9.5 ppb
No 4
D
11 Pioneer 9.3 ppb
No 16
B
12 Vail 8.1 ppb
No 9
F
13 Elfrida 7.0 ppb
No 8
D
14 Paradise Valley 6.9 ppb
No 3
C
15 Yuma 6.1 ppb
No 318
F
16 Winslow 5.9 ppb
No 9
D
17 Page 5.7 ppb
No 8
F
18 Mesa 5.0 ppb
No 3
F
19 Scottsdale 5.0 ppb
No 22
F
20 Payson 5.0 ppb
No 60
F
21 Salt River Indian Community 5.0 ppb
No 22
B
22 San Carlos 5.0 ppb
No 140
D
23 Camp Verde 5.0 ppb
No 149
D
24 Kayenta 5.0 ppb
No 0
D
25 Clarkdale 5.0 ppb
No 0
B+
26 Bylas 5.0 ppb
No 65
D
27 Middle Verde 5.0 ppb
No 22
B-
28 Peridot 5.0 ppb
No 1
B
29 Upper Moenkopi 5.0 ppb
No 8
B-
30 Hotevilla, Hotevilla/Bacavi Community Sc 5.0 ppb
No 1
D+
31 Bacavi 5.0 ppb
No 0
B+
32 Tacna 4.3 ppb
No 63
D
33 Cordes Lakes 4.1 ppb
No 2
B+
34 Kinlichee 4.0 ppb
No 1
C+
35 Fountain Hills 3.9 ppb
No 21
F
36 Mohave Valley 3.4 ppb
No 14
F
37 Lower Greasewood 3.3 ppb
No 9
C+
38 Tonalea, Red Lake 3.2 ppb
No 1
B+
39 Mayer 3.0 ppb
No 24
D+
40 Thoreau West Rural 2.8 ppb
No 2
A
41 Thoreau West Rural 2.8 ppb
No 2
A
42 Supai 2.8 ppb
No 11
D+
43 Big River 2.7 ppb
No 7
D
44 Big River 2.7 ppb
No 7
D
45 Phoenix 2.5 ppb
No 59
F
46 Upper Fruitland, Nenahnezad, San Juan, N 2.5 ppb
No 9
B+
47 Upper Fruitland, Nenahnezad, San Juan, N 2.5 ppb
No 9
B+
48 Tuba City 2.5 ppb
No 3
A
49 Dilcon, Indian Wells, Lower Greasewood, 2.5 ppb
No 47
B-
50 Crownpoint, Littlewater, Three Mile Poin 2.5 ppb
No 4
A
51 Crownpoint, Littlewater, Three Mile Poin 2.5 ppb
No 4
A
52 Leupp, Birdsprings, Tolani Lake 2.5 ppb
No 4
A
53 Bread Springs, Chichiltah 2.5 ppb
No 3
A
54 Bread Springs, Chichiltah 2.5 ppb
No 3
A
55 Torreon/Ojo Encino, New Mexico 2.5 ppb
No 6
A
56 Torreon/Ojo Encino, New Mexico 2.5 ppb
No 6
A
57 Tohatchi, Mexican Springs 2.5 ppb
No 1
A
58 Tohatchi, Mexican Springs 2.5 ppb
No 1
A
59 Red Rock (South Of Gallup) 2.5 ppb
No 4
A
60 Red Rock (South Of Gallup) 2.5 ppb
No 4
A
61 Gap/Cedar Ridge/Bittersprings,Arizona 2.5 ppb
No 0
A
62 Le Chee 2.5 ppb
No 3
A
63 Jeddito 2.5 ppb
No 12
A
64 Hard Rock, Dinnebeto, Rocky Ridge 2.5 ppb
No 2
A
65 Klagetoh, South Ganado, Wide Ruins 2.5 ppb
No 2
A
66 Nageezi 2.5 ppb
No 21
D+
67 Casamero Lake, Borrego Pass, Smith Lake 2.5 ppb
No 2
A
68 Casamero Lake, Borrego Pass, Smith Lake 2.5 ppb
No 2
A
69 Red Valley 2.5 ppb
No 5
B+
70 Iyanbito 2.5 ppb
No 0
A
71 Iyanbito 2.5 ppb
No 0
A
72 Nageezi 2.5 ppb
No 2
A
73 Standing Rock 2.5 ppb
No 0
A-
74 Standing Rock 2.5 ppb
No 0
A-
75 White River 2.1 ppb
No 20
B-
76 Ganado, Cornfield, Steamboat, Woodspring 2.0 ppb
No 4
B+
77 Aneth 2.0 ppb
No 52
D
78 Aneth 2.0 ppb
No 49
D+
79 Fruitland Park 1.8 ppb
No 0
A-
80 Snowflake 1.7 ppb
No 1
C+
81 Topock 1.7 ppb
No 13
C
82 Fort Defiance, Window Rock, St. Michaels 1.6 ppb
No 22
B-
83 Casa Blanca,Bapchule,Wet Camp,Sacate,Wes 1.6 ppb
No 10
A-
84 Beaver Dam 1.6 ppb
No 14
D
85 Kykotsmovi 1.6 ppb
No 1
A-
86 Brunswick 1.6 ppb
No 0
A
87 Tuba City Bia Boarding School 1.5 ppb
No 1
A-
88 Ehrenberg 1.5 ppb
No 5
B
89 Coolidge 1.5 ppb
No 18
D+
90 Chandler 1.4 ppb
No 32
F
91 Many Farms 1.4 ppb
No 1
B-
92 Sacaton, Sacaton Flats,Upper San Tan, Bl 1.3 ppb
No 11
B
93 Sawmill (East And South), Upper Buell Pa 1.3 ppb
No 0
A-
94 Quartzsite 1.2 ppb
No 7
D+
95 Eagar 1.2 ppb
No 9
C
96 Kaibeto 1.1 ppb
No 0
B
97 Fort Mohave 1.1 ppb
No 19
D
98 Shonto 1.1 ppb
No 0
B+
99 Keams Canyon 1.1 ppb
No 27
B
100 Cove 1.1 ppb
No 0
A
101 Oro Valley 1.0 ppb
No 11
D
102 San Luis 1.0 ppb
No 8
D
103 Whiteriver 1.0 ppb
No 7
D
104 Ak-Chin Village 1.0 ppb
No 10
A-
105 Chinle, Many Farms, Del Muerto 1.0 ppb
No 10
B+
106 Pinon, South Pinon, Burnt Corn, Blue Gap 1.0 ppb
No 0
A
107 Peach Springs 1.0 ppb
No 30
C+
108 First Mesa Consolidated Villages 1.0 ppb
No 74
D
109 Cibecue 1.0 ppb
No 4
B-
110 Sweetwater, Red Mesa 1.0 ppb
No 18
C+
111 Sanostee, Tocito, Littlewater, Mittenroc 1.0 ppb
No 0
A
112 Sanostee, Tocito, Littlewater, Mittenroc 1.0 ppb
No 0
A
113 Red Mesa 1.0 ppb
No 33
D
114 New Lands (Sanders) 1.0 ppb
No 2
A
115 Twin Lakes, Toh-La-Kai, Black Springs Wa 1.0 ppb
No 2
A
116 Twin Lakes, Toh-La-Kai, Black Springs Wa 1.0 ppb
No 2
A
117 Rock Point 1.0 ppb
No 0
B-
118 Gallup, West Of 1.0 ppb
No 0
A
119 Gallup, West Of 1.0 ppb
No 0
A
120 Lukachukai 1.0 ppb
No 4
A-
121 Rock Springs 1.0 ppb
No 0
A
122 Rock Springs 1.0 ppb
No 0
A
123 Chilchinbeto 1.0 ppb
No 0
B+
124 Inscription House, Broad Mesa West, Dry 1.0 ppb
No 1
A
125 Dennehotso 1.0 ppb
No 1
B+
126 Cottonwood, Tselani 1.0 ppb
No 4
A
127 Oljeto 1.0 ppb
No 2
A
128 Oljeto 1.0 ppb
No 2
A
129 Round Rock 1.0 ppb
No 12
D+
130 Tsaile, Dine College 1.0 ppb
No 1
A
131 Naschitti, Bisola 1.0 ppb
No 0
A
132 Naschitti, Bisola 1.0 ppb
No 0
A
133 Hopi High School 1.0 ppb
No 46
D+
134 Shonto Junction 1.0 ppb
No 1
A
135 Huerfano 1.0 ppb
No 0
A
136 Huerfano 1.0 ppb
No 0
A
137 Ojo Encino, North Of 1.0 ppb
No 0
A-
138 Ojo Encino, North Of 1.0 ppb
No 0
A-
139 Nazlini 1.0 ppb
No 1
B
140 Teec Nos Pos 1.0 ppb
No 5
B+
141 Ganado 1.0 ppb
No 3
D
142 Houck, Querino Canyon 1.0 ppb
No 3
A-
143 Red Mesa 1.0 ppb
No 13
B-
144 Toadlena, Two Grey Hills 1.0 ppb
No 51
D
145 Toadlena, Two Grey Hills 1.0 ppb
No 51
D
146 Fort Defiance 1.0 ppb
No 1
F
147 Tsa Yah Toh 1.0 ppb
No 0
A
148 Tsa Yah Toh 1.0 ppb
No 0
A
149 Narbona Pass, Sheep Springs 1.0 ppb
No 0
A
150 Narbona Pass, Sheep Springs 1.0 ppb
No 0
A
151 Crystal, Yazzie Springs, Crystal Junctio 1.0 ppb
No 0
A-
152 Crystal, Yazzie Springs, Crystal Junctio 1.0 ppb
No 0
A-
153 Rough Rock 1.0 ppb
No 7
B
154 Coyote Canyon, Brimhall, Bass Lake 1.0 ppb
No 0
A
155 Coyote Canyon, Brimhall, Bass Lake 1.0 ppb
No 0
A
156 Newcomb 1.0 ppb
No 0
A
157 Newcomb 1.0 ppb
No 0
A
158 Safford 0.9 ppb
No 9
D
159 Somerton 0.9 ppb
No 17
D
160 San Xavier West 0.9 ppb
No 3
A-
161 Ft. Wingate High School 0.9 ppb
No 0
B
162 Ft. Wingate High School 0.9 ppb
No 0
B
163 Show Low 0.7 ppb
No 60
D
164 Morenci 0.7 ppb
No 15
C-
165 Tolleson 0.7 ppb
No 1
B+
166 Wildhorse Pass Casino, St. Johns Komatke 0.6 ppb
No 12
B+
167 Shungopavi 0.6 ppb
No 58
D+
168 Lukachukai Community School New 0.6 ppb
No 0
B
169 Organ Pipe Nm 0.6 ppb
No 1
B
170 Wellton 0.5 ppb
No 72
D
171 Parker 0.5 ppb
No 148
F
172 Sells, Big Fields 0.5 ppb
No 3
A
173 Stotonic, Goodyear, Gila Butte, Sweetwat 0.5 ppb
No 11
B+
174 Sr Boarding School, Sr Subdivision, Palo 0.5 ppb
No 2
A
175 South Komelic, Choulic, Cold Fields, Top 0.5 ppb
No 1
A
176 Vaya Chin, Hickiwan, San Simon Village/S 0.5 ppb
No 1
A-
177 Upper Cov Wells, Lower Cov Wells, Sikul 0.5 ppb
No 3
A
178 Pinon 0.5 ppb
No 0
B+
179 Sahuarita 0.3 ppb
No 19
F
180 Tucson 0.0 ppb
No 150
F
181 Gilbert 0.0 ppb
No 11
F
182 Glendale 0.0 ppb
No 5
F
183 Surprise 0.0 ppb
No 18
F
184 Peoria 0.0 ppb
No 13
F
185 Tempe 0.0 ppb
No 3
D+
186 Casa Grande 0.0 ppb
No 44
F
187 Johnson Ranch 0.0 ppb
No 7
D
188 Queen Creek 0.0 ppb
No 14
D
189 Flagstaff 0.0 ppb
No 74
D
190 Maricopa 0.0 ppb
No 228
D
191 Avondale 0.0 ppb
No 13
C+
192 Apache Junction 0.0 ppb
No 18
F
193 Bullhead City 0.0 ppb
No 57
F
194 Buckeye 0.0 ppb
No 103
F
195 Kingman 0.0 ppb
No 110
D
196 Lake Havasu City 0.0 ppb
No 5
D
197 Litchfield Park 0.0 ppb
No 21
F
198 Prescott Valley 0.0 ppb
No 6
D
199 Sierra Vista 0.0 ppb
No 44
D
200 Goodyear 0.0 ppb
No 3
F
201 Prescott 0.0 ppb
No 33
F
202 Green Valley 0.0 ppb
No 9
D
203 El Mirage 0.0 ppb
No 3
D
204 Sun City 0.0 ppb
No 1
B
205 Marana 0.0 ppb
No 13
F
206 Sun City West 0.0 ppb
No 3
B+
207 Nogales 0.0 ppb
No 39
F
208 Catalina 0.0 ppb
No 2
D
209 Sedona 0.0 ppb
No 174
F
210 Anthem 0.0 ppb
No 1
B
211 Cottonwood 0.0 ppb
No 184
D
212 White Tanks 0.0 ppb
No 1
B+
213 Rio Rico 0.0 ppb
No 4
C
214 Eloy 0.0 ppb
No 64
D
215 Douglas 0.0 ppb
No 55
D
216 Grand Canyon 0.0 ppb
No 11
D
217 Buckeye-Sono 0.0 ppb
No 2
B-
218 Fort Huachuca 0.0 ppb
No 9
F
219 Pinetop 0.0 ppb
No 12
D
220 Bisbee 0.0 ppb
No 15
F
221 Oracle 0.0 ppb
No 4
A+
222 Cave Creek 0.0 ppb
No 25
C-
223 Wickenburg 0.0 ppb
No 21
F
224 Globe 0.0 ppb
No 46
F
225 Miami 0.0 ppb
No 1
B
226 Pine 0.0 ppb
No 10
F
227 Munds Park 0.0 ppb
No 1
A
228 Benson 0.0 ppb
No 29
D
229 Holbrook 0.0 ppb
No 6
F
230 Chino Valley 0.0 ppb
No 48
D+
231 Superior 0.0 ppb
No 0
C-
232 Rio Verde 0.0 ppb
No 3
B+
233 Ajo 0.0 ppb
No 0
B-
234 San Manuel 0.0 ppb
No 4
A-
235 Williams 0.0 ppb
No 14
D+
236 Taylor 0.0 ppb
No 1
D
237 Red Rock 0.0 ppb
No 1
D+
238 Carefree 0.0 ppb
No 0
A-
239 Rimrock 0.0 ppb
No 53
C-
240 Willcox 0.0 ppb
No 7
D
241 Saint Johns 0.0 ppb
No 7
C+
242 Tubac 0.0 ppb
No 44
F
243 Vernon 0.0 ppb
No 13
D
244 Bagdad 0.0 ppb
No 6
A-
245 Silverbell 0.0 ppb
No 0
A
246 Tusayan 0.0 ppb
No 18
D+
247 Huachuca City 0.0 ppb
No 12
D
248 Clifton 0.0 ppb
No 37
D+
249 Wittmann 0.0 ppb
No 5
D+
250 Tombstone 0.0 ppb
No 26
D
251 Congress 0.0 ppb
No 1
B
252 Dolan Springs 0.0 ppb
No 12
C+
253 Ash Fork 0.0 ppb
No 3
B
254 Kearny 0.0 ppb
No 14
D
255 Cameron 0.0 ppb
No 38
D
256 White Mountain Lakes 0.0 ppb
No 7
D
257 Paulden 0.0 ppb
No 3
B
258 Clints Well 0.0 ppb
No 1
A-
259 Joseph City 0.0 ppb
No 0
C+
260 Star Valley 0.0 ppb
No 9
D+
261 Lakeside 0.0 ppb
No 15
D+
262 Bellemont 0.0 ppb
No 2
C-
263 Sunrise Vistas 0.0 ppb
No 2
B+
264 Avra Valley 0.0 ppb
No 32
B-
265 St David 0.0 ppb
No 22
D+
266 Tonopah 0.0 ppb
No 42
D+
267 Sunsites 0.0 ppb
No 2
B+
268 Fredonia 0.0 ppb
No 1
C-
269 Centennial Park 0.0 ppb
No 21
B-
270 Linden 0.0 ppb
No 3
C-
271 Concho 0.0 ppb
No 17
D
272 Bourden Ranch Estates 0.0 ppb
No 3
B-
273 Spring Valley 0.0 ppb
No 3
A-
274 Alpine 0.0 ppb
No 5
B+
275 Pomerene 0.0 ppb
No 19
D+
276 Lynwood 0.0 ppb
No 0
B+
277 Aguila 0.0 ppb
No 6
B+
278 Three Points 0.0 ppb
No 5
D+
279 Wilhoit 0.0 ppb
No 1
A-
280 Patagonia 0.0 ppb
No 4
C+
281 Oak Creek Canyon 0.0 ppb
No 43
D+
282 Humboldt 0.0 ppb
No 10
A-
283 Circle City 0.0 ppb
No 1
B+
284 Duncan 0.0 ppb
No 8
F
285 Naco 0.0 ppb
No 4
C-
286 Seligman 0.0 ppb
No 0
A-
287 Stanfield 0.0 ppb
No 215
D+
288 Adaman 0.0 ppb
No 9
C-
289 Patton Place Estates 0.0 ppb
No 0
B+
290 Hayden 0.0 ppb
No 2
D
291 Yarnell 0.0 ppb
No 1
B+
292 Gisela 0.0 ppb
No 2
A-
FAQ

Frequently asked questions about lead in Arizona

Is lead in Arizona tap water a concern?

Yes — 3 of 292 cities with lead data exceed the EPA action level of 15 ppb. The state average is 1.8 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 Arizona 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 Arizona cities have the highest lead levels?

The cities with the highest 90th percentile lead levels in Arizona are: Black Canyon City (50.0 ppb), Pima (32.0 ppb), Mammoth (19.0 ppb), Florence (12.0 ppb), Mariano Lake, Pinedale, Churchrock (12.0 ppb). See the full ranked table above.

More contaminants

Other contaminants in Arizona

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