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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Water quality scores for 8 cities in Utah
Across the 8 Utah water systems we track, the average water quality score is 95/100 — 23 points above the U.S. national average of 72/100. 100% of Utah cities (8 of 8) score above that national benchmark, and 8 earn a Grade A for clean, low-contaminant tap water.
The contaminants most commonly flagged in Utah water systems are arsenic (naturally occurring in groundwater), total dissolved solids and hardness and nitrates (agricultural areas). See the full breakdown in our Utah water quality rankings or compare against the cities with the best water quality in America.
See the top 20 cities with the cleanest, safest drinking water
Complete water quality rankings for every city in Utah
87,000 residents
98,000 residents
115,000 residents
575,000 residents
95,000 residents
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Utah's water quality is generally good, supplied by Wasatch and Uinta mountain snowmelt, but the arid state faces challenges from naturally occurring arsenic, high mineral content, and the concentration of contaminants in a limited water supply. Rapid Wasatch Front growth puts additional pressure on both supply and quality.
Based on our analysis of 8 cities in Utah, the average water quality score is 95/100. The highest-rated city is West Valley City with a score of 95/100, while Ogden has the most room for improvement at 95/100.
Utah cities average 95/100, but contaminants can still vary at the tap and from household plumbing. A certified carbon or reverse-osmosis filter removes trace contaminants and improves taste. For lead and PFAS, look for an NSF 53 certified filter or a reverse osmosis system.
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The Wasatch Front cities of Salt Lake City, Provo, and Ogden draw from mountain reservoirs, canyon streams, and groundwater fed by snowmelt. Rural and southern Utah communities depend more on groundwater and the Colorado River system, where arsenic and total dissolved solids can be elevated.
These contaminants have been detected in various Utah water systems
The Utah Division of Drinking Water regulates public systems under federal EPA standards and manages source protection in a water-scarce environment. The state monitors arsenic closely given its prevalence in Utah groundwater and oversees radionuclide compliance in affected systems.
Naturally occurring arsenic is the most widespread health concern in Utah groundwater, with chronic exposure linked to cancer. Some aquifers carry elevated uranium and radium. High dissolved solids affect taste and plumbing across much of the state but are generally not a direct health risk.
Utah residents on private wells or small systems should test for arsenic, uranium, and nitrate. Reverse osmosis is highly effective against arsenic, uranium, and excess minerals and also improves the taste of high-TDS water. Wasatch Front municipal customers generally enjoy good water but should address lead plumbing in older homes.
Most Utah cities have tap water that meets EPA safety standards. With an average score of 95/100 across 8 cities we analyzed, Utah generally has good water quality. However, water quality varies by location, so check your specific city's report.
The most common water quality concerns in Utah include arsenic (naturally occurring in groundwater), total dissolved solids and hardness, nitrates (agricultural areas). These contaminants can come from natural sources, industrial activities, or aging infrastructure. Review your city's specific report to see which contaminants affect your area.
Whether you need a water filter depends on your specific location and health concerns. Most Utah cities have water that meets EPA standards, though some residents prefer additional filtration for taste or extra protection. Look for filters certified by NSF/ANSI to remove the specific contaminants found in your area.
Public water systems in Utah are required to provide annual Consumer Confidence Reports (CCRs) to residents. You can usually find your report on your water utility's website, request it by phone, or access it through the EPA's database. Our city-level reports above summarize key information from these official sources.
Lead can be present in Utah water, primarily from older plumbing infrastructure. Homes built before 1986 may have lead pipes or lead solder. While water treatment plants remove lead, it can leach into water from service lines and home plumbing. Check your city's specific report for lead testing data, and consider having your tap water tested if you live in an older home.
PFAS ("forever chemicals") have been detected in water systems across the United States, including in Utah. These chemicals are associated with industrial sites, military bases, and firefighting foam use. The EPA has set new PFAS limits effective 2024. Check individual Utah city reports for PFAS testing results in your area.
Based on our analysis, West Valley City has the highest water quality score in Utah at 95/100 (Grade A+). However, "best" depends on your specific health concerns. View our Best Water Quality in Utah page for a complete ranking.
Public water systems in Utah are required by the EPA to test water regularly. Testing frequency depends on the contaminant: bacteria testing occurs daily to weekly, while chemical contaminants may be tested quarterly or annually. Results are published in annual Consumer Confidence Reports. Our site aggregates this data from EPA's SDWIS database.
Compare water quality across counties and find data for your area