Is Green River, UT Tap Water Safe to Drink?
Graded B+, with 5 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
84.6/100
waterverge.com Green River, UT — Water Quality Report
Green River's drinking water received a grade of B+ (84.6 out of 100), indicating good water quality. The city's 1 water system serves approximately 910 residents using surface water.
Lead levels were measured at 1.3 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 77 violations on record, including 5 health-based violations. 5 remain unresolved.
What to know about Green River's water
Green River ranks #54 out of 177 cities in Utah for water quality, placing it mid-range in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
As a small community water system, Green River may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Green River, UT water safe to drink?
Green River's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (84.6/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 910 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Green River
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Green River's water quality assessment. Grade: B+ (84.6/100).
Contaminants: Consumer Confidence Rule.
1 health-based. Contaminants: TTHM.
1 health-based. Contaminants: TTHM.
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 Green River's water supply.
Well within EPA limits.
Violation history
Green River's water system has 77 total violations on record, including 5 health-based violations. 5 remain unresolved. 1 violation was issued in the last 5 years.
Flood & environmental risk
Emery 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 Green River Bl Swaseys Rapid, Green River.
Where does Green River's water come from?
Green River's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 910 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Green River Bl Swaseys Rapid (river), Green River (river).
What Green River residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Green River'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.
Green River'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 droughtEmery 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
Emery 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. | 1.3 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Green River compares by contaminant
Explore where Green River ranks among all Utah cities for specific contaminants.
Water source & infrastructure
Where Green River's water comes from
Green River's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by local government ownership and serves approximately 910 people through 1 water system.
Water bodies near Green River
Green River is located near 2 notable water bodies. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving Green River
| System Name | PWSID | Population | Source |
|---|---|---|---|
| GREEN RIVER CITY | UTAH08005 | 910 | SW |
How Green River compares
Full Utah rankings →Green River's score of 84.6/100 is above the average of 50/100 among major Utah cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Utah rankings →About Green River, UT
Wikipedia →Green River is a city in both Emery County, Utah United States. The population was 847 at the 2020 census.
Learn more about your water
Guides and resources related to Green River's water quality findings.
Explore water quality across Emery
Frequently asked questions
Is Green River, UT tap water safe to drink?
Green River's water quality earned a grade of B+ (84.6/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #54 out of 177 cities tested in Utah.
What contaminants are in Green River's water?
Lead was measured at 1.3 ppb (90th percentile). 77 violations are on record.
How is Green River'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 Green River?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Green River's water come from?
Green River's water is sourced from Surface water. The city has 1 water system serving approximately 910 residents.
What health violations has Green River's water system had?
Green River has 5 health-based violations on record. The most recent violation was recorded in July 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 5 violations remain unresolved.
How does Green River's water compare to other cities?
Green River ranks #54 out of 177 cities in Utah (better than 69% of state cities) and #5795 out of 15744 cities nationally (63th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Green River's small water system affect quality?
Green River's system serves approximately 910 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 77 violations on record.