Is Mona, UT Tap Water Safe to Drink?
Graded A-, with 7 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
85.2/100
waterverge.com Mona, UT — Water Quality Report
Mona's drinking water received a grade of A- (85.2 out of 100), indicating good water quality. The city's 1 water system serves approximately 2,100 residents using groundwater.
Lead levels were measured at 3.1 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 113 violations on record, including 4 health-based violations. 7 remain unresolved.
What to know about Mona's water
Mona ranks #52 out of 177 cities in Utah for water quality, placing it mid-range in the state.
Mona 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, Mona may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Mona, UT water safe to drink?
Mona's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (85.2/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 2,100 residents using groundwater (wells).
Recent water quality updates for Mona
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Mona's water quality assessment. Grade: A- (85.2/100).
1 health-based. Contaminants: Groundwater Rule.
Contaminants: Revised Total Coliform Rule, E. COLI.
Contaminants: Revised Total Coliform Rule.
Federal disaster declaration (FEMA DR-3223). Coastal Storm event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-720). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Mona's water supply.
Well within EPA limits.
Violation history
Mona's water system has 113 total violations on record, including 4 health-based violations. 7 remain unresolved.
Flood & environmental risk
Juab County has experienced 3 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 Salt Crk Bl Nephi Powerplant Div Nr Nephi, Salt Creek, Currant Creek, Summit Creek.
Where does Mona's water come from?
Mona's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 2,100 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Salt Crk Bl Nephi Powerplant Div Nr Nephi (river), Salt Creek (river), Currant Creek (river), Summit Creek (river).
What Mona residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Mona'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.
Run cold water for 30 seconds before drinking, especially in the morning. Lead and copper leach from household plumbing when water sits in pipes.
Mona'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
Top industrial polluters within 10 miles of Mona
Industrial polluters nearby
Reported releases to surface water by facilities near Mona, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
BARNES BULLETS - MONA LLC MONA, UT84645 | — | — | 1.1 mi |
OWENS CORNING INSULATING SYSTEMS LLC - NEPHI NEPHI, UT84648 | — | — | 10.0 mi |
GENEVA ROCK PRODUCTS INC. - MONA MONA, UT84645 | — | — | 2.1 mi |
MONA PIT & BATCH PLANT MONA, UT84645 | — | — | 2.7 mi |
BARRETTE OUTDOOR LIVING INC. NEPHI, UT84648 | — | — | 5.8 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Drought conditions
D3 — extreme droughtJuab 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
Juab County has experienced 3 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. | 3.1 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Mona compares by contaminant
Explore where Mona ranks among all Utah cities for specific contaminants.
Water source & infrastructure
Where Mona's water comes from
Mona'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 2,100 people through 1 water system.
Water bodies near Mona
Mona is located near 4 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Mona
| System Name | PWSID | Population | Source |
|---|---|---|---|
| MONA TOWN WATER SYSTEM | UTAH12002 | 2,100 | GW |
How Mona compares
Full Utah rankings →Mona's score of 85.2/100 is above the average of 50/100 among major Utah cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Utah rankings →About Mona, UT
Learn more about your water
Guides and resources related to Mona's water quality findings.
Explore water quality across Juab
Frequently asked questions
Is Mona, UT tap water safe to drink?
Mona's water quality earned a grade of A- (85.2/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #52 out of 177 cities tested in Utah.
What contaminants are in Mona's water?
Lead was measured at 3.1 ppb (90th percentile). 113 violations are on record.
How is Mona'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 Mona?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Mona's water come from?
Mona's water is sourced from Groundwater. The city has 1 water system serving approximately 2,100 residents.
What health violations has Mona's water system had?
Mona has 4 health-based violations on record. The most recent violation was recorded in June 2019. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 7 violations remain unresolved.
Is Mona's groundwater at risk of contamination?
Mona 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 113 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 Mona's water compare to other cities?
Mona ranks #52 out of 177 cities in Utah (better than 71% of state cities) and #5458 out of 15744 cities nationally (65th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Mona's small water system affect quality?
Mona's system serves approximately 2,100 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 113 violations on record.