Utah Water Quality — 177 Cities Tested

Analysis

Utah water quality overview

Utah's drinking water quality is fair overall, with an average score of 70.2 out of 100 across 177 cities tested. The median score is 75.7, serving a total population of 3,678,595 residents. The state shows a mixed picture: 53 cities earned an A, while 19 cities received an F. PFAS "forever chemicals" were detected in 64 of 177 cities tested (36%). 3 cities exceed the 2024 EPA maximum contaminant levels. 4 cities have lead levels exceeding the EPA action level of 15 ppb, often indicating aging infrastructure with lead service lines or lead solder. The state relies on a mix of water sources: 119 cities use groundwater while 58 draw from surface water such as rivers, lakes, and reservoirs.

Key Concerns

Issues to watch in Utah

64 cities

PFAS Detected

36% of tested cities have PFAS in their water supply.

4 cities

Lead Exceedances

Lead levels above the EPA action level of 15 ppb (90th percentile).

150 cities

Health Violations

42,246 total violations recorded, 176 with unresolved issues.

19 cities

Failing Systems

Received a grade of F, indicating serious water quality issues.

Contaminant Data

Explore contaminants in Utah

Lead in Utah → Ranked by 90th percentile level (ppb) PFAS in Utah → Ranked by compounds detected Copper in Utah → Ranked by 90th percentile level (mg/L)

More contaminants tested in Utah

HAA5 → Chromium-6 → Arsenic → Nitrate → Strontium → 1,4-Dioxane → Manganese → Vanadium → Chlorate → Molybdenum → Lithium → NDMA →

State context

15

Superfund sites in Utah

EPA National Priorities List

50.9%

of Utah residents on fluoridated water

CDC, 2020

67,305

lbs released to surface water

Top 10 TRI facilities, 2023

16.1%

of Utah domestic wells exceed EPA arsenic limit

USGS, 2,351 samples · 10 µg/L MCL

Domestic well chemistry

Private-well water in Utah

Based on USGS Powell Domestic-Well Database — 1,925 private wells sampled across Utah. These wells are not regulated by the EPA; if you draw your tap from a private well, the public-system grade above does not apply to you.

2.6 µg/L

Median arsenic in domestic wells

P90 14.5 µg/L · max 275.0 µg/L

6 µg/L

Median manganese in domestic wells

9.9% exceed 300 µg/L aesthetic limit

Industrial pollution

Top industrial water polluters in Utah

Industrial polluters nearby

The 10 facilities reporting the most pounds released to surface water in Utah, 2023.

Total reported releases to surface water: 67,305 lbs

Facility	Top chemical	To surface water (lbs/yr)
CHEVRON PRODUCTS CO - SALT LAKE REFINERY Petroleum · CHEVRON CORP SALT LAKE CITY, UT84116	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	55,554
KENNECOTT UTAH COPPER SMELTER & REFINERY Primary Metals · RIO TINTO AMERICA INC MAGNA, UT84044	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	5,811
KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT Metal Mining · RIO TINTO AMERICA INC BINGHAM CANYON, UT84006	Nickel And Nickel Compounds	4,063
COMPASS MINERALS OGDEN INC Other · COMPASS MINERALS INTERNATIONAL INC OGDEN, UT84404	Mercury compounds	610
VALMONT COATINGS INTERMOUNTAIN GALVANIZING Fabricated Metals · VALMONT INDUSTRIES INC LINDON, UT84042	Zinc compounds	589

+ 5 more facilities

Source: EPA Toxic Release Inventory (TRI) 2023

Test your own tap

Get your Utah water tested

City-level data shows the source and infrastructure picture — but lead and other home-plumbing issues only show up at your tap. Find a state-certified lab, see what to test for, and what it costs.

Grade Distribution

How Utah cities scored

A: 53 B: 50 C: 24 D: 31 F: 19

Best Cities

Worst Cities

City Map

Water quality across Utah

Each dot is a city, colored by its water quality grade. Size reflects population served. Click any city to view its full water report.

All Cities

177 cities in Utah

Full rankings →

#	City	Grade	Score	Population	Violations
1	Milford	A	94.6	1K	27
2	Rocky Ridge	A	93.4	1K	16
3	Great Falls	A	93	600	1
4	South Rim	A	92.7	834	16
5	Millcreek	A	92.2	5K	16
6	Toquerville	A	92.2	2K	25
7	Henefer	A	92.1	882	48
8	Lewiston	A	92	2K	87
9	Redmond	A	92	850	27
10	Montpelier	A	91.9	600	17
11	Minersville	A	91.5	825	15
12	Clevland	A	91.3	1K	80
13	Hyrum	A	90.8	9K	82
14	Orderville	A	90.5	805	113
15	Hideout	A	90.3	1K	4
16	Genola	A	90.2	2K	42
17	Talmage	A	90.1	2K	7
18	Mendon	A	90	2K	76
19	Woods Cross	A-	89.8	6K	16
20	Annabella	A-	89.8	860	42
21	Salina	A-	89.7	2K	66
22	Paragonah	A-	89.7	600	65
23	Helper	A-	89.5	2K	7
24	City	A-	89.4	522	31
25	Ephraim	A-	89.3	7K	47
26	Jensen	A-	89.2	1K	16
27	Uintah City	A-	89.2	1K	19
28	Aurora	A-	88.4	1K	12
29	Perry	A-	88.3	5K	17
30	La Verkin	A-	88.2	5K	12
31	Tridell	A-	88.1	14K	45
32	Mayfield	A-	88	617	68
33	Washington Terrace	A-	87.9	9K	46
34	Richfield	A-	87.5	8K	72
35	Millville	A-	87.4	2K	60
36	Erda	A-	87.4	1K	97
37	Benson	A-	87.4	743	83
38	Layton	A-	87.2	82K	44
39	Fillmore	A-	87.2	3K	15
40	Gunnison	A-	86.5	3K	58
41	Newton	A-	86.5	810	104
42	Stockton	A-	86.5	620	176
43	Virgin	A-	86.4	2K	62
44	Fairview	A-	86.2	2K	207
45	Wendover	A-	86.2	2K	78
46	Levan	A-	86.1	851	138
47	Clarkston	A-	85.5	763	78
48	Springdale	A-	85.5	529	123
49	Veyo	A-	85.4	500	75
50	South Beloit	A-	85.3	507	2
51	Nephi	A-	85.2	7K	40
52	Mona	A-	85.2	2K	113
53	Monroe	A-	85.1	2K	116
54	Green River	B+	84.6	910	77
55	Wellington	B+	84.5	2K	66
56	Panguitch	B+	84.2	2K	104
57	Riverdale	B+	84.1	9K	99
58	Myton	B+	84.1	1K	81
59	Bear River	B+	83.7	880	125
60	Loa	B+	83.5	840	69
61	West Haven	B+	82.8	21K	47
62	Ivins	B+	82.8	16K	78
63	Manti	B+	82.7	3K	45
64	Kanosh	B+	82.7	555	57
65	Altamont	B+	82.6	1K	47
66	St George City	B+	82.5	105K	54
67	Spring City	B+	82.5	1K	75
68	Magna	B+	81.3	32K	81
69	Riverton	B+	81.2	67K	210
70	Santa Clara	B+	81.2	9K	131
71	Taylorsville	B+	80.9	3K	6
72	Oak City	B+	80.9	785	142
73	River Heights	B+	80.8	2K	146
74	Honeyville	B+	80.3	2K	78
75	Fountain Green	B	79.9	1K	54
76	Francis	B	79.1	2K	133
77	Beaver	B	78.9	4K	125
78	Leeds	B	78.9	1K	147
79	Kearns	B	78.8	57K	80
80	Plain City	B	78.8	21K	34
81	Fruitland	B	77.7	1K	221
82	West Point	B	77.6	15K	123
83	Goshen	B	77.5	925	136
84	Willard	B	77.1	2K	121
85	Dutch John	B	76.4	504	267
86	Torrey	B	76.1	2K	137
87	Billings	B	75.7	2K	22
88	East Carbon	B	75.7	1K	188
89	Dammeron Valley	B	75.7	885	83
90	Mountain Green	B	75.4	4K	197
91	Woodland Hills	B	75.2	2K	197
92	Central Valley	B-	74.3	690	348
93	Syracuse	B-	73.5	36K	72
94	Roy	B-	72.9	42K	180
95	Farmington	B-	72.7	13K	41
96	Lincoln	B-	72.6	660	216
97	Bullfrog	B-	71.8	880	178
98	Elwood	B-	71.2	27K	233
99	Corinne	B-	71.2	2K	248
100	Montua	B-	71.2	1K	214
101	Fruit Heights	B-	71	6K	31
102	Farr West	B-	70.3	30K	114
103	Enterprise	B-	70	3K	263
104	Alta	C+	69.8	5K	71
105	Escalante	C+	69	800	230
106	Stansbury Park	C+	68.8	12K	335
107	Circleville	C+	68.5	500	101
108	Fielding	C+	68.3	3K	213
109	Clinton	C+	68	44K	85
110	Kaysville	C+	68	42K	217
111	Mount Pleasant	C+	67.8	4K	230
112	Hinckley	C+	67.5	630	158
113	South Jordan	C+	67.3	88K	230
114	Hurricane	C+	67	75K	253
115	Mapleton	C+	65.4	14K	456
116	Vernal	C+	65.2	16K	159
117	West Jordan	C+	65.1	255K	182
118	Grantsville	C	63.2	13K	132
119	Bluffdale	C	62.6	44K	226
120	Springville	C	61.2	36K	241
121	Brigham City	C-	59.6	123K	250
122	Paradise	C-	59	1K	178
123	Garland	C-	57.9	2K	89
124	Deweyville	C-	57.6	520	354
125	Manila	C-	57.1	845	366
126	North Salt Lake	C-	56	19K	299
127	Tabiona	C-	55.8	785	297
128	Kanab	D+	54.9	9K	464
129	Centerfield	D+	52	2K	225
130	Eureka	D+	52	760	425
131	Wellsville	D+	51	78K	541
132	Elsinore	D+	50.2	1K	544
133	Herriman	D+	50	61K	440
134	Castledale	D+	50	8K	532
135	Parowan	D+	50	4K	676
136	Monument Valley	D+	50	1K	595
137	New Harmony	D+	50	1K	614
138	Midway	D+	50	531	157
139	Payson	D	49.6	28K	446
140	Roosevelt	D	49.4	8K	192
141	Moab	D	49	14K	732
142	St George	D	49	3K	1282
143	Bountiful	D	48.5	48K	234
144	North Ogden	D	48.2	32K	371
145	Apple Valley	D	48	744	957
146	Santaquin	D	47.9	27K	148
147	Tremonton	D	47.2	14K	623
148	Delta	D	47.2	4K	356
149	Morni	D	47.2	2K	180
150	Eagle Mountain	D	46.9	140K	737
151	Tropic	D	46.4	2K	334
152	Price	D	46.1	15K	163
153	Eden	D	46	5K	786
154	Oakley	D	46	3K	418
155	Kamas	D	46	3K	356
156	Heber	D	46	749	434
157	Provo	D	45.7	120K	846
158	Morgan	D	45.2	6K	339
159	Lehi	F	44.9	141K	422
160	Draper	F	44.1	37K	394
161	Blanding	F	44	4K	390
162	Duchesne	F	43.7	6K	198
163	Saratoga Springs	F	43.6	89K	206
164	Ogden	F	43.5	60K	418
165	Ft. Duchesne	F	43.2	4K	487
166	Spanish Fork	F	43	71K	675
167	Heber City	F	41.2	28K	971
168	Coalville	F	40.8	26K	456
169	Orem	F	40.7	161K	1136
170	Cedar City	F	40.6	53K	2155
171	Hildale	F	40.2	6K	411
172	Sandy	F	39.5	158K	662
173	Park City	F	36.8	23K	842
174	Salt Lake City	F	35.3	541K	1338
175	Smithfield	F	35	19K	162
176	Tooele	F	33.6	37K	428
177	Monticello	F	33	3K	826

Counties

Browse Utah counties

Beaver 3 cities · avg 88.3 Box Elder 11 cities · avg 71.4 Cache 11 cities · avg 76.9 Carbon 4 cities · avg 74 Cascade 1 city · avg 93 Daggett 2 cities · avg 66.8 Davis 12 cities · avg 68.9 Duchesne 6 cities · avg 66.8 Emery 3 cities · avg 75.3 Garfield 3 cities · avg 66.5 Grand 1 city · avg 49 Iron 3 cities · avg 60.1 Juab 5 cities · avg 80.4 Kane 3 cities · avg 72.4 Millard 5 cities · avg 73.1 Morgan 2 cities · avg 60.3 Piute 1 city · avg 68.5 Salt Lake 15 cities · avg 65.2 San Juan 2 cities · avg 38.5 Sanpete 10 cities · avg 76.2 Sevier 8 cities · avg 82.1 Summit 5 cities · avg 60 Tooele 9 cities · avg 75.9 Uintah 4 cities · avg 81.3 Utah 13 cities · avg 56.3 Wasatch 4 cities · avg 56.9 Washington 16 cities · avg 72.7 Wayne 2 cities · avg 79.8 Weber 9 cities · avg 70.8 Winnebago 1 city · avg 85.3 Yellowstone 1 city · avg 75.7

ZIP Codes

Browse Utah by ZIP code

Look up water quality by ZIP code to find the systems serving your area.

View all Utah ZIP codes →

FAQ

Frequently asked questions about Utah's water

Is Utah's tap water safe to drink?

Utah's water quality varies by city. The statewide average grade is B- (70.2/100). 58% of cities scored an A or B, while 28% received a D or F. Check your specific city for detailed results.

Which Utah cities have the best water quality?

The top-rated cities are Milford (A), Rocky Ridge (A), Great Falls (A). These cities scored highest based on violation history, lead levels, PFAS contamination, and regulatory compliance.

Which Utah cities have the worst water quality?

The lowest-rated cities are Monticello (F), Tooele (F), Smithfield (F). We recommend residents in these areas consider water filtration and review their city's specific contaminant data.

How many Utah cities have PFAS in their water?

64 out of 177 cities tested positive for PFAS "forever chemicals" (36%). 3 cities exceed the 2024 EPA maximum contaminant levels. Reverse osmosis or activated carbon filters can help reduce PFAS exposure.

Do any Utah cities have dangerous lead levels?

4 cities exceed the EPA lead action level of 15 ppb. Lead contamination typically comes from aging pipes and lead service lines rather than the water source itself. An NSF 53-certified filter can effectively remove lead from tap water.

Utah Water Quality Report