Is Oak City, UT Tap Water Safe to Drink?
Graded B+, with 14 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
80.9/100
waterverge.com Oak City, UT — Water Quality Report
Oak City's drinking water received a grade of B+ (80.9 out of 100), indicating good water quality. The city's 2 water systems serve approximately 785 residents using groundwater.
Lead levels were measured at 1.6 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 142 violations on record, including 8 health-based violations. 14 remain unresolved.
What to know about Oak City's water
Oak City ranks #72 out of 177 cities in Utah for water quality, placing it mid-range in the state.
Oak City relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
As a small community water system, Oak City may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Oak City, UT water safe to drink?
Oak City's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (80.9/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 785 residents using groundwater (wells).
Recent water quality updates for Oak City
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Oak City's water quality assessment. Grade: B+ (80.9/100).
Contaminants: Revised Total Coliform Rule.
Contaminants: E. COLI.
Contaminants: E. COLI.
Federal disaster declaration (FEMA DR-4011). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3223). Coastal Storm event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Oak City's water supply.
Well within EPA limits.
Violation history
Oak City's water system has 142 total violations on record, including 8 health-based violations. 14 remain unresolved. 1 violation was issued in the last 5 years.
Flood & environmental risk
Millard County has experienced 4 federally declared disasters since 1983. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Sevier River.
Where does Oak City's water come from?
Oak City's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 785 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Sevier River (river).
What Oak City residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Oak City's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Oak City's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Drought conditions
D3 — extreme droughtMillard County is currently in D3 (extreme drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Millard County has experienced 4 federally declared disasters since 1983. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 1.6 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Oak City compares by contaminant
Explore where Oak City ranks among all Utah cities for specific contaminants.
Water source & infrastructure
Where Oak City's water comes from
Oak City's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by local government ownership and serves approximately 785 people through 2 water systems.
Water bodies near Oak City
Oak City is located near 1 notable water body. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Oak City
| System Name | PWSID | Population | Source |
|---|---|---|---|
| OAK CITY WATER SYSTEM | UTAH14010 | 660 | GW |
| OAK MEADOWS SUBDIVISION | UTAH14055 | 125 | GW |
How Oak City compares
Full Utah rankings →Oak City's score of 80.9/100 is above the average of 50/100 among major Utah cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Utah rankings →About Oak City, UT
Wikipedia →Oak City is a town in Millard County, Utah, United States. The population was 595 at the 2020 census.
Learn more about your water
Guides and resources related to Oak City's water quality findings.
Explore water quality across Millard
Frequently asked questions
Is Oak City, UT tap water safe to drink?
Oak City's water quality earned a grade of B+ (80.9/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #72 out of 177 cities tested in Utah.
What contaminants are in Oak City's water?
Lead was measured at 1.6 ppb (90th percentile). 142 violations are on record.
How is Oak City's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Oak City?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Oak City's water come from?
Oak City's water is sourced from Groundwater. The city has 2 water systems serving approximately 785 residents.
What health violations has Oak City's water system had?
Oak City has 8 health-based violations on record. The most recent violation was recorded in July 2022. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 14 violations remain unresolved.
Is Oak City's groundwater at risk of contamination?
Oak City uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 142 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Oak City's water compare to other cities?
Oak City ranks #72 out of 177 cities in Utah (better than 59% of state cities) and #7682 out of 15744 cities nationally (51th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.