F17/100

Arizona Tap Water Quality Rankings 2026

120 cities · 7,233,891 people served

Top Contaminant Concerns

Copper (90th percentile)PFOSPFOAPFHxSLead (90th percentile)

All Cities in Arizona

#	City	Score	Population	Violations
1	Phoenix	D (29)	2,282,902	4153
2	Tucson	F (12)	874,719	6097
3	Mesa	F (0)	466,000	1578
4	El Mirage	F (13)	333,639	3045
5	Scottsdale	C (45)	264,746	1062
6	Gilbert	F (0)	247,600	882
7	Chandler	F (0)	247,328	640
8	Peoria	D (29)	195,366	2417
9	Tempe	F (0)	166,388	533
10	Yuma	F (7)	162,110	2837
11	Maricopa	D (33)	120,458	821
12	Ft Defiance	D (32)	99,744	2191
13	San Tan Valley	D (32)	97,797	295
14	Queen Creek	F (4)	97,212	464
15	Flagstaff	F (3)	92,709	1447
16	Avondale	F (0)	83,001	217
17	Buckeye	F (13)	81,457	1319
18	Litchfield Park	F (11)	64,029	387
19	Surprise	D (30)	63,970	450
20	Dewey	F (0)	57,048	379
21	Lake Havasu City	F (0)	54,610	291
22	Sierra Vista	F (0)	54,575	3859
23	Goodyear	F (0)	50,001	330
24	Kingman	F (0)	48,950	478
25	Oro Valley	F (0)	46,850	1928
26	Prescott	F (0)	45,854	662
27	Bullhead City	D (21)	44,611	1261
28	San Luis	F (0)	39,705	627
29	Sacaton	F (2)	33,271	220
30	Sahuarita	F (0)	26,865	207
31	Fort Mohave	F (0)	25,000	1200
32	Payson	F (0)	22,591	2127
33	Green Valley	F (0)	22,085	205
34	Cottonwood	F (8)	22,077	1365
35	Nogales	F (0)	22,000	1226
36	Whiteriver	F (0)	21,148	478
37	Safford	F (0)	20,600	370
38	Sun Lakes	D (31)	20,572	638
39	Douglas	F (0)	19,256	964
40	Davis-Monthan Afb	F (0)	18,640	732
41	Grand Canyon	F (0)	18,300	496
42	Vail	F (0)	17,500	150
43	Show Low	F (0)	17,139	536
44	Marana	F (0)	17,112	313
45	Eloy	F (0)	16,755	371
46	Fort Defiance	D (32)	15,912	293
47	Florence	F (0)	15,900	238
48	Apache Junction	F (0)	15,610	291
49	Dragoon	F (0)	15,603	803
50	Parker	D (31)	15,400	280
51	Somerton	F (0)	15,292	302
52	Glendale	D (22)	14,762	954
53	Page	F (0)	11,859	411
54	Pinetop	F (0)	11,855	1143
55	San Carlos	F (0)	11,638	922
56	Sells	B (65)	10,728	145
57	Cave Creek	F (0)	10,115	309
58	Williams	D (29)	10,038	618
59	Winslow	F (0)	9,789	192
60	Golden Valley	F (0)	9,563	259
61	Wickenburg	D (32)	9,358	233
62	Tolleson	F (0)	9,300	113
63	Sedona	F (0)	8,899	1043
64	Luke Afb	F (0)	8,440	692
65	Pine	F (0)	8,013	491
66	Globe	F (0)	7,536	696
67	Fountain Hills	F (0)	7,260	77
68	Camp Verde	F (15)	7,213	134
69	Snowflake	F (0)	5,590	104
70	Benson	F (0)	5,355	201
71	Holbrook	F (0)	5,318	144
72	Peach Springs	F (0)	4,985	303
73	Clarkdale	F (12)	4,920	88
74	Eagar	F (0)	4,590	126
75	Taylor	F (0)	4,190	215
76	Polacca	F (0)	4,108	374
77	Carefree	B (65)	3,894	35
78	Pima	F (8)	3,799	72
79	Tuba City	D (32)	3,780	339
80	Chino Valley	F (0)	3,750	362
81	Saint Johns	F (0)	3,500	192
82	Willcox	F (0)	3,236	134
83	Bagdad	F (0)	3,200	88
84	Wellton	F (0)	3,000	434
85	Quartzsite	F (0)	2,761	109
86	Hotevilla	D (23)	2,748	160
87	Prescott Valley	F (0)	2,742	192
88	Ajo	C (43)	2,654	54
89	Chandler Heights	D (23)	2,620	66
90	Dolan Springs	F (0)	2,257	272
91	Ash Fork	F (0)	2,250	88
92	Peridot	B (72)	2,085	13
93	Humboldt	D (20)	2,000	76
94	Springerville	F (0)	1,972	558
95	Kearny	F (0)	1,950	104
96	Paulden	F (0)	1,932	137
97	Gila Bend	F (0)	1,922	208
98	Happy Jack	D (20)	1,920	76
99	Congress	D (37)	1,870	63
100	Joseph City	F (0)	1,811	192
101	Second Mesa	F (0)	1,756	376
102	Forest Lakes	D (37)	1,746	48
103	Petrified Forest	B (61)	1,742	35
104	Morenci	F (0)	1,678	175
105	Mohave Valley	F (0)	1,578	144
106	Tombstone	F (0)	1,545	495
107	Many Farms	F (0)	1,506	143
108	Fredonia	F (0)	1,327	288
109	Kykotsmovi	C (53)	1,302	40
110	Cameron	F (0)	1,270	159
111	Colorado City	F (0)	1,267	201
112	Saint David	F (0)	1,255	54
113	Queen Valley	F (0)	1,200	156
114	Mammoth	F (0)	1,181	97
115	Keams Canyon	F (0)	1,150	215
116	Mayer	F (0)	1,127	134
117	Casa Grande	F (0)	1,071	201
118	Littlefield	D (28)	1,048	69
119	Alpine	D (32)	1,030	48
120	Pomerene	F (0)	1,030	181