Data: EPA SDWIS, NWS, State plumbing boards, Rewiring America Last verified: 2026-06-03

Throughout Utah, public water systems report above-baseline compliance with federal drinking water standards — violations exist but are isolated rather than systemic.

Score Distribution

How Utah's 347 ZIP codes are distributed across safety grades.

Top 10 Safest ZIP Codes in Utah

Highest Home Safety Scores in the state.

10 Lowest-Scoring ZIP Codes in Utah

County Rankings

Water quality breakdown by county. 30 counties with data in Utah.

Most Common Contaminants in Utah

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Overview

We track water quality, weather alerts, plumbing regulations, and energy rebates for 347 ZIP codes across Utah, covering 363 community water systems that serve approximately 2,471,672 people.

190 of 347 ZIP codes (55%) have recorded EPA violations. 101 health-based violations have been documented.

Active Weather Alerts

1 active alert in Utah. Severe weather can directly affect tap water quality — flooding, power outages, and infrastructure damage may lead to boil-water advisories.

View all Utah alerts →

Plumbing Regulations

Utah follows the International Plumbing Code (2021 edition).

• Plumbing code: IPC (2021)
• Homeowner DIY: Licensed plumber required
• Water heater permit: Required
• Annual backflow test: Required

Full Utah regulations →

Areas with Most Violations

Areas with No Violations

Home Safety Score

Average Home Safety Score for Utah: B (72/100)

Lead & Copper

• Average lead level (90th percentile): 0.0029 mg/L (EPA action level: 0.015 mg/L)
• 2 ZIP codes exceed the EPA lead action level

Radon Risk

• High risk (Zone 1): 62 ZIP codes (18%)
• Moderate risk (Zone 2): 284 ZIP codes
• Low risk (Zone 3): 0 ZIP codes

ZIP Code Reports for Utah

Largest Communities

Lowest Safety Scores

Highest Safety Scores

All 347 ZIP Codes in Utah

• 84004 (Alpine) [B] — 2 violations
• 84001 (Altamont) [C] — 2 violations
• 84710 (Alton) [B] — 18 violations ⚠
• 84002 (Altonah) [D]
• 84003 (American Fork) [C]
• 84510 (Aneth) [D]
• 84711 (Annabella) [B]
• 84712 (Antimony) [B] — 5 violations ⚠
• 84620 (Aurora) [D] — 2 violations
• 84621 (Axtell) [C] — 8 violations ⚠
• 84301 (Bear River City) [D]
• 84713 (Beaver) [C] — 3 violations
• 84714 (Beryl) [C] — 7 violations
• 84715 (Bicknell) [C] — 6 violations
• 84006 (Bingham Canyon) [D]
• 84511 (Blanding) [B] — 13 violations ⚠
• 84007 (Bluebell) [D]
• 84512 (Bluff) [B] — 9 violations
• 84008 (Bonanza) [D]
• 84716 (Boulder) [B]
• 84010 (Bountiful) [B] — 2 violations ⚠
• 84011 (Bountiful) [B] — 2 violations ⚠
• 84719 (Brian Head) [D]
• 84302 (Brigham City) [B] — 4 violations ⚠
• 84764 (Bryce) [D]
• 84304 (Cache Junction) [D]
• 84718 (Cannonville) [B] — 5 violations
• 84513 (Castle Dale) [D]
• 84720 (Cedar City) [B] — 5 violations ⚠
• 84721 (Cedar City) [B] — 5 violations ⚠
• 84013 (Cedar Valley) [C] — 18 violations
• 84622 (Centerfield) [C] — 3 violations
• 84014 (Centerville) [C]
• 84722 (Central) [C] — 8 violations
• 84623 (Chester) [D]
• 84723 (Circleville) [D] — 2 violations
• 84515 (Cisco) [D]
• 84305 (Clarkston) [B] — 1 violation
• 84516 (Clawson) [D]
• 84015 (Clearfield) [C]
• 84016 (Clearfield) [D]
• 84089 (Clearfield) [D]
• 84518 (Cleveland) [D]
• 84017 (Coalville) [B] — 5 violations
• 84306 (Collinston) [D]
• 84307 (Corinne) [B]
• 84308 (Cornish) [B] — 9 violations ⚠
• 84018 (Croydon) [B] — 11 violations ⚠
• 84783 (Dammeron Valley) [B] — 1 violation ⚠
• 84624 (Delta) [C] — 10 violations ⚠
• 84309 (Deweyville) [B] — 6 violations
• 84020 (Draper) [B] — 4 violations
• 84021 (Duchesne) [C] — 2 violations
• 84762 (Duck Creek Village) [C]
• 84022 (Dugway) [D]
• 84023 (Dutch John) [B]
• 84005 (Eagle Mountain) [B] — 2 violations
• 84520 (East Carbon) [C] — 5 violations ⚠
• 84024 (Echo) [B] — 1 violation ⚠
• 84310 (Eden) [B] — 3 violations
• 84626 (Elberta) [C] — 13 violations ⚠
• 84521 (Elmo) [D]
• 84724 (Elsinore) [C] — 1 violation
• 84522 (Emery) [D]
• 84725 (Enterprise) [B] — 6 violations ⚠
• 84627 (Ephraim) [B]
• 84726 (Escalante) [B] — 4 violations
• 84628 (Eureka) [D] — 8 violations
• 84629 (Fairview) [B]
• 84025 (Farmington) [C] — 1 violation
• 84630 (Fayette) [C] — 6 violations
• 84523 (Ferron) [D]
• 84311 (Fielding) [B] — 5 violations
• 84631 (Fillmore) [B] — 2 violations
• 84026 (Fort Duchesne) [D]
• 84632 (Fountain Green) [D] — 6 violations
• 84027 (Fruitland) [C] — 4 violations
• 84028 (Garden City) [B]
• 84312 (Garland) [B] — 5 violations
• 84728 (Garrison) [D]
• 84729 (Glendale) [B] — 2 violations
• 84730 (Glenwood) [C]
• 84633 (Goshen) [B] — 2 violations
• 84029 (Grantsville) [B] — 1 violation
• 84525 (Green River) [B] — 1 violation
• 84731 (Greenville) [D]
• 84732 (Greenwich) [C] — 7 violations
• 84313 (Grouse Creek) [C] — 7 violations
• 84733 (Gunlock) [B] — 5 violations ⚠
• 84634 (Gunnison) [B]
• 84734 (Hanksville) [B] — 2 violations
• 84031 (Hanna) [D]
• 84735 (Hatch) [B] — 9 violations
• 84032 (Heber City) [B] — 3 violations
• 84526 (Helper) [B]
• 84033 (Henefer) [B]
• 84736 (Henrieville) [D]
• 84096 (Herriman) [B] — 6 violations ⚠
• 84784 (Hildale) [B] — 4 violations
• 84056 (Hill Afb) [D]
• 84635 (Hinckley) [C] — 12 violations ⚠
• 84636 (Holden) [B] — 1 violation
• 84314 (Honeyville) [B] — 3 violations
• 84315 (Hooper) [D]
• 84316 (Howell) [B] — 2 violations
• 84528 (Huntington) [B] — 8 violations ⚠
• 84317 (Huntsville) [D] — 8 violations ⚠
• 84737 (Hurricane) [B] — 5 violations
• 84318 (Hyde Park) [D]
• 84319 (Hyrum) [B]
• 84034 (Ibapah) [D]
• 84738 (Ivins) [B] — 3 violations
• 84035 (Jensen) [B]
• 84739 (Joseph) [C] — 5 violations
• 84740 (Junction) [C] — 1 violation
• 84036 (Kamas) [B] — 15 violations ⚠
• 84741 (Kanab) [B] — 6 violations
• 84742 (Kanarraville) [B] — 6 violations
• 84637 (Kanosh) [B] — 5 violations ⚠
• 84037 (Kaysville) [B] — 3 violations
• 84529 (Kenilworth) [D]
• 84743 (Kingston) [C] — 3 violations
• 84744 (Koosharem) [D] — 12 violations
• 84530 (La Sal) [B] — 1 violation
• 84745 (La Verkin) [B] — 2 violations
• 84533 (Lake Powell) [B] — 1 violation
• 84038 (Laketown) [B] — 4 violations ⚠
• 84039 (Lapoint) [D]
• 84040 (Layton) [B]
• 84041 (Layton) [B]
• 84638 (Leamington) [B] — 1 violation
• 84746 (Leeds) [C] — 2 violations
• 84043 (Lehi) [B] — 3 violations
• 84639 (Levan) [B] — 2 violations
• 84320 (Lewiston) [B]
• 84042 (Lindon) [D]
• 84747 (Loa) [B] — 2 violations
• 84321 (Logan) [B] — 1 violation
• 84322 (Logan) [B] — 1 violation
• 84323 (Logan) [B] — 1 violation
• 84341 (Logan) [B] — 1 violation
• 84749 (Lyman) [B] — 11 violations ⚠
• 84640 (Lynndyl) [B] — 3 violations
• 84044 (Magna) [B]
• 84046 (Manila) [B] — 6 violations
• 84642 (Manti) [C] — 1 violation
• 84324 (Mantua) [C]
• 84664 (Mapleton) [B] — 2 violations ⚠
• 84750 (Marysvale) [C] — 2 violations
• 84643 (Mayfield) [C]
• 84644 (Meadow) [B] — 1 violation
• 84325 (Mendon) [B]
• 84531 (Mexican Hat) [D]
• 84047 (Midvale) [D]
• 84049 (Midway) [C] — 22 violations ⚠
• 84751 (Milford) [B]
• 84326 (Millville) [B] — 2 violations
• 84752 (Minersville) [B]
• 84532 (Moab) [C] — 9 violations
• 84753 (Modena) [D]
• 84645 (Mona) [B]
• 84754 (Monroe) [C] — 1 violation
• 84534 (Montezuma Creek) [D]
• 84535 (Monticello) [B] — 10 violations ⚠
• 84536 (Monument Valley) [D]
• 84050 (Morgan) [B] — 1 violation
• 84646 (Moroni) [D]
• 84755 (Mount Carmel) [D]
• 84647 (Mount Pleasant) [B]
• 84051 (Mountain Home) [D]
• 84052 (Myton) [C] — 1 violation
• 84053 (Neola) [C]
• 84648 (Nephi) [B] — 1 violation
• 84757 (New Harmony) [B] — 6 violations
• 84756 (Newcastle) [B]
• 84327 (Newton) [B]
• 84054 (North Salt Lake) [B] — 2 violations
• 84649 (Oak City) [B] — 1 violation
• 84055 (Oakley) [B] — 4 violations ⚠
• 84201 (Ogden) [B] — 2 violations
• 84244 (Ogden) [B] — 2 violations
• 84401 (Ogden) [B] — 2 violations
• 84402 (Ogden) [B] — 2 violations
• 84403 (Ogden) [B] — 2 violations
• 84404 (Ogden) [B] — 2 violations
• 84405 (Ogden) [B] — 2 violations
• 84407 (Ogden) [B] — 2 violations
• 84408 (Ogden) [B] — 2 violations
• 84409 (Ogden) [B] — 2 violations
• 84412 (Ogden) [B] — 2 violations
• 84414 (Ogden) [B] — 2 violations
• 84415 (Ogden) [B] — 2 violations
• 84537 (Orangeville) [C]
• 84758 (Orderville) [B]
• 84057 (Orem) [B] — 3 violations ⚠
• 84058 (Orem) [B] — 3 violations ⚠
• 84059 (Orem) [B] — 3 violations ⚠
• 84097 (Orem) [B] — 3 violations ⚠
• 84759 (Panguitch) [B] — 4 violations
• 84328 (Paradise) [C] — 12 violations ⚠
• 84760 (Paragonah) [B]
• 84060 (Park City) [B] — 3 violations
• 84068 (Park City) [B] — 3 violations
• 84098 (Park City) [B] — 3 violations
• 84329 (Park Valley) [D]
• 84761 (Parowan) [C] — 17 violations
• 84651 (Payson) [B] — 2 violations
• 84061 (Peoa) [B] — 7 violations ⚠
• 84781 (Pine Valley) [D]
• 84062 (Pleasant Grove) [B] — 6 violations
• 84330 (Plymouth) [B]
• 84331 (Portage) [B] — 5 violations
• 84501 (Price) [C] — 1 violation
• 84332 (Providence) [C]
• 84601 (Provo) [B] — 9 violations ⚠
• 84602 (Provo) [B] — 9 violations ⚠
• 84603 (Provo) [B] — 9 violations ⚠
• 84604 (Provo) [B] — 9 violations ⚠
• 84605 (Provo) [B] — 9 violations ⚠
• 84606 (Provo) [B] — 9 violations ⚠
• 84063 (Randlett) [C]
• 84064 (Randolph) [B] — 2 violations
• 84652 (Redmond) [C] — 2 violations
• 84701 (Richfield) [B]
• 84333 (Richmond) [C]
• 84334 (Riverside) [D]
• 84065 (Riverton) [B]
• 84763 (Rockville) [B] — 3 violations ⚠
• 84066 (Roosevelt) [C] — 5 violations ⚠
• 84067 (Roy) [B] — 1 violation
• 84069 (Rush Valley) [D]
• 84770 (Saint George) [C]
• 84771 (Saint George) [D]
• 84790 (Saint George) [C]
• 84791 (Saint George) [D]
• 84653 (Salem) [D]
• 84654 (Salina) [C] — 1 violation
• 84101 (Salt Lake City) [B]
• 84102 (Salt Lake City) [B]
• 84103 (Salt Lake City) [B]
• 84104 (Salt Lake City) [B]
• 84105 (Salt Lake City) [B]
• 84106 (Salt Lake City) [B]
• 84107 (Salt Lake City) [B]
• 84108 (Salt Lake City) [B]
• 84109 (Salt Lake City) [B]
• 84110 (Salt Lake City) [B]
• 84111 (Salt Lake City) [B]
• 84112 (Salt Lake City) [B]
• 84113 (Salt Lake City) [B]
• 84114 (Salt Lake City) [B]
• 84115 (Salt Lake City) [B]
• 84116 (Salt Lake City) [B]
• 84117 (Salt Lake City) [B]
• 84118 (Salt Lake City) [B]
• 84119 (Salt Lake City) [B]
• 84120 (Salt Lake City) [B]
• 84121 (Salt Lake City) [B]
• 84122 (Salt Lake City) [B]
• 84123 (Salt Lake City) [B]
• 84124 (Salt Lake City) [B]
• 84125 (Salt Lake City) [B]
• 84126 (Salt Lake City) [B]
• 84127 (Salt Lake City) [B]
• 84128 (Salt Lake City) [B]
• 84129 (Salt Lake City) [B]
• 84130 (Salt Lake City) [B]
• 84131 (Salt Lake City) [B]
• 84132 (Salt Lake City) [B]
• 84133 (Salt Lake City) [B]
• 84134 (Salt Lake City) [B]
• 84136 (Salt Lake City) [B]
• 84138 (Salt Lake City) [B]
• 84139 (Salt Lake City) [B]
• 84141 (Salt Lake City) [B]
• 84143 (Salt Lake City) [B]
• 84144 (Salt Lake City) [B]
• 84145 (Salt Lake City) [B]
• 84147 (Salt Lake City) [B]
• 84148 (Salt Lake City) [B]
• 84150 (Salt Lake City) [B]
• 84151 (Salt Lake City) [B]
• 84152 (Salt Lake City) [B]
• 84157 (Salt Lake City) [B]
• 84158 (Salt Lake City) [B]
• 84165 (Salt Lake City) [B]
• 84170 (Salt Lake City) [B]
• 84171 (Salt Lake City) [B]
• 84180 (Salt Lake City) [B]
• 84184 (Salt Lake City) [B]
• 84189 (Salt Lake City) [B]
• 84190 (Salt Lake City) [B]
• 84199 (Salt Lake City) [B]
• 84070 (Sandy) [B] — 12 violations ⚠
• 84090 (Sandy) [B] — 12 violations ⚠
• 84091 (Sandy) [B] — 12 violations ⚠
• 84092 (Sandy) [B] — 12 violations ⚠
• 84093 (Sandy) [B] — 12 violations ⚠
• 84094 (Sandy) [B] — 12 violations ⚠
• 84765 (Santa Clara) [B] — 3 violations
• 84655 (Santaquin) [B] — 1 violation
• 84045 (Saratoga Springs) [B] — 1 violation
• 84656 (Scipio) [B] — 13 violations ⚠
• 84766 (Sevier) [D]
• 84657 (Sigurd) [D] — 4 violations
• 84335 (Smithfield) [C] — 1 violation
• 84336 (Snowville) [B] — 1 violation
• 84009 (South Jordan) [B] — 4 violations
• 84095 (South Jordan) [B] — 4 violations
• 84660 (Spanish Fork) [B] — 2 violations
• 84662 (Spring City) [C] — 3 violations ⚠
• 84767 (Springdale) [B] — 2 violations
• 84663 (Springville) [B] — 3 violations
• 84665 (Sterling) [C] — 7 violations ⚠
• 84071 (Stockton) [B]
• 84772 (Summit) [B] — 11 violations ⚠
• 84539 (Sunnyside) [D]
• 84075 (Syracuse) [B]
• 84072 (Tabiona) [C] — 13 violations ⚠
• 84073 (Talmage) [C] — 1 violation
• 84773 (Teasdale) [B] — 4 violations
• 84540 (Thompson) [D]
• 84074 (Tooele) [B] — 3 violations
• 84774 (Toquerville) [B]
• 84775 (Torrey) [B] — 3 violations
• 84337 (Tremonton) [B] — 7 violations
• 84338 (Trenton) [B] — 10 violations ⚠
• 84076 (Tridell) [C]
• 84776 (Tropic) [B] — 7 violations ⚠
• 84078 (Vernal) [C] — 3 violations
• 84079 (Vernal) [C] — 3 violations
• 84080 (Vernon) [B] — 1 violation
• 84782 (Veyo) [B] — 2 violations
• 84779 (Virgin) [B] — 2 violations
• 84667 (Wales) [B]
• 84082 (Wallsburg) [B] — 3 violations
• 84780 (Washington) [B] — 1 violation
• 84542 (Wellington) [B] — 1 violation
• 84339 (Wellsville) [B]
• 84083 (Wendover) [B] — 6 violations
• 84081 (West Jordan) [B] — 1 violation
• 84084 (West Jordan) [B] — 1 violation
• 84088 (West Jordan) [B] — 1 violation
• 84085 (Whiterocks) [D]
• 84340 (Willard) [B] — 3 violations ⚠
• 84086 (Woodruff) [B] — 8 violations ⚠
• 84087 (Woods Cross) [B]

Data Sources

• Water quality: EPA Safe Drinking Water Information System (SDWIS)
• Weather alerts: National Weather Service (NWS)
• Regulations: State plumbing boards, ICC, IAPMO

Updated daily.

Frequently Asked Questions

Is the water safe to drink in Utah?

Utah has 363 community water systems serving 2,471,672 people across 347 ZIP codes. There are 890 recorded violations, including 101 health-based. 190 of 347 ZIP codes have at least one violation.

What plumbing code does Utah follow?

Utah follows the IPC plumbing code. A licensed plumber is generally required for plumbing work.

Is lead a concern in Utah's drinking water?

2 ZIP codes in Utah have lead levels exceeding the EPA action level of 0.015 mg/L.

What is the radon risk in Utah?

18% of ZIP codes in Utah fall in EPA Radon Zone 1 (highest risk).