Is Mountain Green, UT Tap Water Safe to Drink?
Graded B — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
75.4/100
waterverge.com Mountain Green, UT — Water Quality Report
Mountain Green's drinking water received a grade of B (75.4 out of 100), indicating good water quality. The city's 2 water systems serve approximately 4,345 residents using groundwater.
Lead levels were measured at 1.5 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 197 violations on record, including 9 health-based violations. 12 remain unresolved.
What to know about Mountain Green's water
Mountain Green ranks #90 out of 177 cities in Utah for water quality, placing it below average in the state.
Mountain Green 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.
Water quality score
See methodology →Is Mountain Green, UT water safe to drink?
Mountain Green's drinking water has significant quality concerns based on EPA testing data. With a grade of B (75.4/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 4,345 residents using groundwater (wells).
Recent water quality updates for Mountain Green
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Mountain Green's water quality assessment. Grade: B (75.4/100).
Federal disaster declaration (FEMA DR-4752). Flood event — may have impacted local water infrastructure.
Contaminants: E. COLI.
1 health-based. Contaminants: Groundwater Rule.
1 health-based. Contaminants: Groundwater Rule.
Federal disaster declaration (FEMA DR-4011). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Mountain Green's water supply.
Well within EPA limits.
Exceeds EPA action level. Copper can leach from household plumbing — flush taps for 30 seconds before drinking.
Violation history
Mountain Green's water system has 197 total violations on record, including 9 health-based violations. 12 remain unresolved.
Flood & environmental risk
Morgan County has experienced 5 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 Weber River, South Fork Ogden River, Ogden River Bl Pineview Res Nr Huntsville, Farmington.
Where does Mountain Green's water come from?
Mountain Green's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 4,345 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Weber River (river), South Fork Ogden River (river), Ogden River Bl Pineview Res Nr Huntsville (river), Farmington (river).
What Mountain Green residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Mountain Green'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.
Mountain Green'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 Mountain Green
Industrial polluters nearby
Reported releases to surface water by facilities near Mountain Green, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
GENEVA ROCK PRODUCTS INC LAYTON FACILITY LAYTON, UT84041 | — | — | 9.1 mi |
GENEVA ROCK PRODUCTS INC - MORGAN HMAP MORGAN, UT84050 | — | — | 3.1 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Drought conditions
D2 — severe droughtMorgan County is currently in D2 (severe 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
Morgan County has experienced 5 federally declared disasters since 1983. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Mountain Green's water supply, we recommend the following filter types.
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. | 1.5 | 15 | ppb | Inorganic | Safe |
| Copper (90th percentile) CopperInorganic A metal that enters drinking water mainly through corrosion of copper plumbing. Small amounts are essential for health, but excess levels are harmful. Health EffectsGastrointestinal distress (nausea, vomiting, diarrhea) at short-term high levels; liver and kidney damage from long-term exposure. EPA Limit1.3 mg/L action level Common SourcesCorrosion of copper household plumbing, erosion of natural deposits. | 1.55 | 1.3 | mg/L | Inorganic | Over Limit |
Lead level trend (90th percentile)
Copper level trend (90th percentile)
See how Mountain Green compares by contaminant
Explore where Mountain Green ranks among all Utah cities for specific contaminants.
Water source & infrastructure
Where Mountain Green's water comes from
Mountain Green'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 private ownership and serves approximately 4,345 people through 2 water systems.
Water bodies near Mountain Green
Mountain Green is located near 4 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Mountain Green
| System Name | PWSID | Population | Source |
|---|---|---|---|
| COTTONWOOD MUTUAL | UTAH15013 | 3,145 | GW |
| HIGHLANDS WATER COMPANY INC | UTAH15005 | 1,200 | GW |
How Mountain Green compares
Full Utah rankings →Mountain Green's score of 75.4/100 is above the average of 50/100 among major Utah cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Utah rankings →About Mountain Green, UT
Wikipedia →Mountain Green is a census-designated place in northwestern Morgan County, Utah, United States. The population was 4,231 at the 2020 census. Located 16 miles (26 km) up the Weber River from Ogden, Mountain Green is the world headquarters of the Browning Arms Company.
Learn more about your water
Guides and resources related to Mountain Green's water quality findings.
Explore water quality across Morgan
Frequently asked questions
Is Mountain Green, UT tap water safe to drink?
Mountain Green's water quality earned a grade of B (75.4/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #90 out of 177 cities tested in Utah.
What contaminants are in Mountain Green's water?
Lead was measured at 1.5 ppb (90th percentile). 197 violations are on record.
How is Mountain Green'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 Mountain Green?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Mountain Green's water come from?
Mountain Green's water is sourced from Groundwater. The city has 2 water systems serving approximately 4,345 residents.
What health violations has Mountain Green's water system had?
Mountain Green has 9 health-based violations on record. The most recent violation was recorded in June 2020. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 12 violations remain unresolved.
Is Mountain Green's groundwater at risk of contamination?
Mountain Green 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 197 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 Mountain Green's water compare to other cities?
Mountain Green ranks #90 out of 177 cities in Utah (better than 49% of state cities) and #9587 out of 15744 cities nationally (39th percentile). The grade of B reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.