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Lead Contamination

Lead in Arizona Drinking Water

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

271
Cities Tested
3
Exceeds Limit
1%
% Exceeds Limit
1.9 ppb
State Avg
▼ 1% vs national
vs National
221
Health Violations
Analysis

Lead in Arizona: what the data shows

Arizona has 271 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 1.9 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 271 cities
← ▼ 1% below national rate (better)
National avg
2%
352 of 15325 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 2K
  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 17K
  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 Springerville 11.0 ppb 2K
  8. 8 F Heber 11.0 ppb 1K
  9. 9 F Cornville 10.0 ppb 2K
  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 Springerville 11.0 ppb
No 16
F
8 Heber 11.0 ppb
No 11
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 Elfrida 7.0 ppb
No 8
D
13 Paradise Valley 6.9 ppb
No 3
C
14 Yuma 6.1 ppb
No 318
F
15 Winslow 5.9 ppb
No 9
D
16 Page 5.7 ppb
No 8
F
17 Mesa 5.0 ppb
No 3
F
18 Scottsdale 5.0 ppb
No 22
F
19 Payson 5.0 ppb
No 60
F
20 Salt River Indian Community 5.0 ppb
No 22
B
21 San Carlos 5.0 ppb
No 140
D
22 Camp Verde 5.0 ppb
No 149
D
23 Clarkdale 5.0 ppb
No 0
B+
24 Bylas 5.0 ppb
No 65
D
25 Middle Verde 5.0 ppb
No 22
B-
26 Peridot 5.0 ppb
No 1
B
27 Upper Moenkopi 5.0 ppb
No 8
B-
28 Hotevilla, Hotevilla/Bacavi Community Sc 5.0 ppb
No 1
D+
29 Bacavi 5.0 ppb
No 0
B+
30 Kayenta 5.0 ppb
No 0
D
31 Tacna 4.3 ppb
No 63
D
32 Cordes Lakes 4.1 ppb
No 2
B+
33 Kinlichee 4.0 ppb
No 1
C+
34 Fountain Hills 3.9 ppb
No 21
F
35 Mohave Valley 3.4 ppb
No 14
F
36 Lower Greasewood 3.3 ppb
No 9
C+
37 Tonalea, Red Lake 3.2 ppb
No 1
B+
38 Thoreau West Rural 2.8 ppb
No 2
A
39 Thoreau West Rural 2.8 ppb
No 2
A
40 Supai 2.8 ppb
No 11
D+
41 Big River 2.7 ppb
No 7
D
42 Big River 2.7 ppb
No 7
D
43 Phoenix 2.5 ppb
No 59
F
44 Upper Fruitland, Nenahnezad, San Juan, N 2.5 ppb
No 9
B+
45 Upper Fruitland, Nenahnezad, San Juan, N 2.5 ppb
No 9
B+
46 Tuba City 2.5 ppb
No 3
A
47 Dilcon, Indian Wells, Lower Greasewood, 2.5 ppb
No 47
B-
48 Crownpoint, Littlewater, Three Mile Poin 2.5 ppb
No 4
A
49 Crownpoint, Littlewater, Three Mile Poin 2.5 ppb
No 4
A
50 Leupp, Birdsprings, Tolani Lake 2.5 ppb
No 4
A
51 Bread Springs, Chichiltah 2.5 ppb
No 3
A
52 Bread Springs, Chichiltah 2.5 ppb
No 3
A
53 Torreon/Ojo Encino, New Mexico 2.5 ppb
No 6
A
54 Torreon/Ojo Encino, New Mexico 2.5 ppb
No 6
A
55 Tohatchi, Mexican Springs 2.5 ppb
No 1
A
56 Tohatchi, Mexican Springs 2.5 ppb
No 1
A
57 Red Rock (South Of Gallup) 2.5 ppb
No 4
A
58 Red Rock (South Of Gallup) 2.5 ppb
No 4
A
59 Gap/Cedar Ridge/Bittersprings,Arizona 2.5 ppb
No 0
A
60 Le Chee 2.5 ppb
No 3
A
61 Jeddito 2.5 ppb
No 12
A
62 Hard Rock, Dinnebeto, Rocky Ridge 2.5 ppb
No 2
A
63 Klagetoh, South Ganado, Wide Ruins 2.5 ppb
No 2
A
64 Casamero Lake, Borrego Pass, Smith Lake 2.5 ppb
No 2
A
65 Casamero Lake, Borrego Pass, Smith Lake 2.5 ppb
No 2
A
66 Iyanbito 2.5 ppb
No 0
A
67 Iyanbito 2.5 ppb
No 0
A
68 Nageezi 2.5 ppb
No 2
A
69 Nageezi 2.5 ppb
No 21
D+
70 Standing Rock 2.5 ppb
No 0
A-
71 Standing Rock 2.5 ppb
No 0
A-
72 White River 2.1 ppb
No 20
B-
73 Ganado, Cornfield, Steamboat, Woodspring 2.0 ppb
No 4
B+
74 Aneth 2.0 ppb
No 49
D+
75 Aneth 2.0 ppb
No 52
D
76 Fruitland Park 1.8 ppb
No 0
A-
77 Snowflake 1.7 ppb
No 1
C+
78 Topock 1.7 ppb
No 13
C
79 Fort Defiance, Window Rock, St. Michaels 1.6 ppb
No 22
B-
80 Casa Blanca,Bapchule,Wet Camp,Sacate,Wes 1.6 ppb
No 10
A-
81 Kykotsmovi 1.6 ppb
No 1
A-
82 Brunswick 1.6 ppb
No 0
A
83 Tuba City Bia Boarding School 1.5 ppb
No 1
A-
84 Ehrenberg 1.5 ppb
No 5
B
85 Chandler 1.4 ppb
No 32
F
86 Many Farms 1.4 ppb
No 1
B-
87 Sacaton, Sacaton Flats,Upper San Tan, Bl 1.3 ppb
No 11
B
88 Sawmill (East And South), Upper Buell Pa 1.3 ppb
No 0
A-
89 Eagar 1.2 ppb
No 9
C
90 Quartzsite 1.2 ppb
No 7
D+
91 Keams Canyon 1.1 ppb
No 27
B
92 Cove 1.1 ppb
No 0
A
93 Shonto 1.1 ppb
No 0
B+
94 Oro Valley 1.0 ppb
No 11
D
95 San Luis 1.0 ppb
No 8
D
96 Whiteriver 1.0 ppb
No 7
D
97 Ak-Chin Village 1.0 ppb
No 10
A-
98 Chinle, Many Farms, Del Muerto 1.0 ppb
No 10
B+
99 Pinon, South Pinon, Burnt Corn, Blue Gap 1.0 ppb
No 0
A
100 Peach Springs 1.0 ppb
No 30
C+
101 First Mesa Consolidated Villages 1.0 ppb
No 74
D
102 Cibecue 1.0 ppb
No 4
B-
103 Sweetwater, Red Mesa 1.0 ppb
No 18
C+
104 Sanostee, Tocito, Littlewater, Mittenroc 1.0 ppb
No 0
A
105 Sanostee, Tocito, Littlewater, Mittenroc 1.0 ppb
No 0
A
106 New Lands (Sanders) 1.0 ppb
No 2
A
107 Twin Lakes, Toh-La-Kai, Black Springs Wa 1.0 ppb
No 2
A
108 Twin Lakes, Toh-La-Kai, Black Springs Wa 1.0 ppb
No 2
A
109 Gallup, West Of 1.0 ppb
No 0
A
110 Gallup, West Of 1.0 ppb
No 0
A
111 Lukachukai 1.0 ppb
No 4
A-
112 Rock Springs 1.0 ppb
No 0
A
113 Rock Springs 1.0 ppb
No 0
A
114 Inscription House, Broad Mesa West, Dry 1.0 ppb
No 1
A
115 Cottonwood, Tselani 1.0 ppb
No 4
A
116 Chilchinbeto 1.0 ppb
No 0
B+
117 Oljeto 1.0 ppb
No 2
A
118 Oljeto 1.0 ppb
No 2
A
119 Tsaile, Dine College 1.0 ppb
No 1
A
120 Naschitti, Bisola 1.0 ppb
No 0
A
121 Naschitti, Bisola 1.0 ppb
No 0
A
122 Hopi High School 1.0 ppb
No 46
D+
123 Shonto Junction 1.0 ppb
No 1
A
124 Huerfano 1.0 ppb
No 0
A
125 Huerfano 1.0 ppb
No 0
A
126 Ojo Encino, North Of 1.0 ppb
No 0
A-
127 Ojo Encino, North Of 1.0 ppb
No 0
A-
128 Ganado 1.0 ppb
No 3
D
129 Houck, Querino Canyon 1.0 ppb
No 3
A-
130 Red Mesa 1.0 ppb
No 33
D
131 Red Mesa 1.0 ppb
No 13
B-
132 Toadlena, Two Grey Hills 1.0 ppb
No 51
D
133 Toadlena, Two Grey Hills 1.0 ppb
No 51
D
134 Round Rock 1.0 ppb
No 12
D+
135 Fort Defiance 1.0 ppb
No 1
F
136 Tsa Yah Toh 1.0 ppb
No 0
A
137 Tsa Yah Toh 1.0 ppb
No 0
A
138 Narbona Pass, Sheep Springs 1.0 ppb
No 0
A
139 Narbona Pass, Sheep Springs 1.0 ppb
No 0
A
140 Nazlini 1.0 ppb
No 1
B
141 Rock Point 1.0 ppb
No 0
B-
142 Crystal, Yazzie Springs, Crystal Junctio 1.0 ppb
No 0
A-
143 Crystal, Yazzie Springs, Crystal Junctio 1.0 ppb
No 0
A-
144 Coyote Canyon, Brimhall, Bass Lake 1.0 ppb
No 0
A
145 Coyote Canyon, Brimhall, Bass Lake 1.0 ppb
No 0
A
146 Newcomb 1.0 ppb
No 0
A
147 Newcomb 1.0 ppb
No 0
A
148 Safford 0.9 ppb
No 9
D
149 Somerton 0.9 ppb
No 17
D
150 San Xavier West 0.9 ppb
No 3
A-
151 Ft. Wingate High School 0.9 ppb
No 0
B
152 Ft. Wingate High School 0.9 ppb
No 0
B
153 Show Low 0.7 ppb
No 60
D
154 Morenci 0.7 ppb
No 15
C-
155 Tolleson 0.7 ppb
No 1
B+
156 Wildhorse Pass Casino, St. Johns Komatke 0.6 ppb
No 12
B+
157 Shungopavi 0.6 ppb
No 58
D+
158 Lukachukai Community School New 0.6 ppb
No 0
B
159 Organ Pipe Nm 0.6 ppb
No 1
B
160 Wellton 0.5 ppb
No 72
D
161 Parker 0.5 ppb
No 148
F
162 Sells, Big Fields 0.5 ppb
No 3
A
163 Stotonic, Goodyear, Gila Butte, Sweetwat 0.5 ppb
No 11
B+
164 Sr Boarding School, Sr Subdivision, Palo 0.5 ppb
No 2
A
165 South Komelic, Choulic, Cold Fields, Top 0.5 ppb
No 1
A
166 Vaya Chin, Hickiwan, San Simon Village/S 0.5 ppb
No 1
A-
167 Upper Cov Wells, Lower Cov Wells, Sikul 0.5 ppb
No 3
A
168 Pinon 0.5 ppb
No 0
B+
169 Sahuarita 0.3 ppb
No 19
F
170 Tucson 0.0 ppb
No 150
F
171 Gilbert 0.0 ppb
No 11
F
172 Peoria 0.0 ppb
No 13
F
173 Tempe 0.0 ppb
No 3
D+
174 Queen Creek 0.0 ppb
No 14
D
175 Flagstaff 0.0 ppb
No 74
D
176 Maricopa 0.0 ppb
No 228
D
177 Johnson Ranch 0.0 ppb
No 7
D
178 Avondale 0.0 ppb
No 13
C+
179 Buckeye 0.0 ppb
No 103
F
180 Surprise 0.0 ppb
No 18
F
181 Lake Havasu City 0.0 ppb
No 5
D
182 Litchfield Park 0.0 ppb
No 21
F
183 Goodyear 0.0 ppb
No 3
F
184 Kingman 0.0 ppb
No 110
D
185 Bullhead City 0.0 ppb
No 57
F
186 Prescott 0.0 ppb
No 33
F
187 El Mirage 0.0 ppb
No 3
D
188 Sun City 0.0 ppb
No 1
B
189 Sierra Vista 0.0 ppb
No 44
D
190 Sun City West 0.0 ppb
No 3
B+
191 Anthem 0.0 ppb
No 1
B
192 Nogales 0.0 ppb
No 39
F
193 Green Valley 0.0 ppb
No 9
D
194 Cottonwood 0.0 ppb
No 184
D
195 White Tanks 0.0 ppb
No 1
B+
196 Marana 0.0 ppb
No 13
F
197 Catalina 0.0 ppb
No 2
D
198 Rio Rico 0.0 ppb
No 4
C
199 Eloy 0.0 ppb
No 64
D
200 Douglas 0.0 ppb
No 55
D
201 Grand Canyon 0.0 ppb
No 11
D
202 Buckeye-Sono 0.0 ppb
No 2
B-
203 Apache Junction 0.0 ppb
No 18
F
204 Fort Huachuca 0.0 ppb
No 9
F
205 Oracle 0.0 ppb
No 4
A+
206 Cave Creek 0.0 ppb
No 25
C-
207 Wickenburg 0.0 ppb
No 21
F
208 Pinetop 0.0 ppb
No 12
D
209 Sedona 0.0 ppb
No 174
F
210 Glendale 0.0 ppb
No 5
F
211 Bisbee 0.0 ppb
No 15
F
212 Miami 0.0 ppb
No 1
B
213 Pine 0.0 ppb
No 10
F
214 Munds Park 0.0 ppb
No 1
A
215 Globe 0.0 ppb
No 46
F
216 Benson 0.0 ppb
No 29
D
217 Holbrook 0.0 ppb
No 6
F
218 Rio Verde 0.0 ppb
No 3
B+
219 San Manuel 0.0 ppb
No 4
A-
220 Williams 0.0 ppb
No 14
D+
221 Superior 0.0 ppb
No 0
C-
222 Taylor 0.0 ppb
No 1
D
223 Carefree 0.0 ppb
No 0
A-
224 Red Rock 0.0 ppb
No 1
D+
225 Saint Johns 0.0 ppb
No 7
C+
226 Willcox 0.0 ppb
No 7
D
227 Bagdad 0.0 ppb
No 6
A-
228 Chino Valley 0.0 ppb
No 48
D+
229 Silverbell 0.0 ppb
No 0
A
230 Ajo 0.0 ppb
No 0
B-
231 Dolan Springs 0.0 ppb
No 12
C+
232 Ash Fork 0.0 ppb
No 3
B
233 Kearny 0.0 ppb
No 14
D
234 White Mountain Lakes 0.0 ppb
No 7
D
235 Paulden 0.0 ppb
No 3
B
236 Clints Well 0.0 ppb
No 1
A-
237 Congress 0.0 ppb
No 1
B
238 Joseph City 0.0 ppb
No 0
C+
239 Bellemont 0.0 ppb
No 2
C-
240 Tusayan 0.0 ppb
No 18
D+
241 Clifton 0.0 ppb
No 37
D+
242 Tombstone 0.0 ppb
No 26
D
243 Sunrise Vistas 0.0 ppb
No 2
B+
244 Sunsites 0.0 ppb
No 2
B+
245 Fredonia 0.0 ppb
No 1
C-
246 Cameron 0.0 ppb
No 38
D
247 Centennial Park 0.0 ppb
No 21
B-
248 St David 0.0 ppb
No 22
D+
249 Bourden Ranch Estates 0.0 ppb
No 3
B-
250 Spring Valley 0.0 ppb
No 3
A-
251 Alpine 0.0 ppb
No 5
B+
252 Pomerene 0.0 ppb
No 19
D+
253 Lakeside 0.0 ppb
No 15
D+
254 Lynwood 0.0 ppb
No 0
B+
255 Aguila 0.0 ppb
No 6
B+
256 Linden 0.0 ppb
No 3
C-
257 Huachuca City 0.0 ppb
No 12
D
258 Avra Valley 0.0 ppb
No 32
B-
259 Wilhoit 0.0 ppb
No 1
A-
260 Patagonia 0.0 ppb
No 4
C+
261 Humboldt 0.0 ppb
No 10
A-
262 Circle City 0.0 ppb
No 1
B+
263 Duncan 0.0 ppb
No 8
F
264 Prescott Valley 0.0 ppb
No 6
D
265 Seligman 0.0 ppb
No 0
A-
266 Adaman 0.0 ppb
No 9
C-
267 Naco 0.0 ppb
No 4
C-
268 Patton Place Estates 0.0 ppb
No 0
B+
269 Hayden 0.0 ppb
No 2
D
270 Yarnell 0.0 ppb
No 1
B+
271 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 271 cities with lead data exceed the EPA action level of 15 ppb. The state average is 1.9 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

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Copper in Arizona
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HAA5 in Arizona
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Chromium-6 in Arizona
Ranked by max detected (µg/L)
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Arsenic in Arizona
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Nitrate in Arizona
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Strontium in Arizona
Ranked by max detected (µg/L)
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1,4-Dioxane in Arizona
Ranked by max detected (µg/L)
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Manganese in Arizona
Ranked by max detected (µg/L)
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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)
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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)
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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 Arizona water quality → National Lead map →