Is Byron, WY Tap Water Safe to Drink?
Graded A-, with 2 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
89.8/100
waterverge.com Byron, WY — Water Quality Report
Byron's drinking water received a grade of A- (89.8 out of 100), indicating good water quality. The city's 1 water system serves approximately 593 residents using purchased surface water.
Lead levels were measured at 0.0 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 8 violations on record, including 0 health-based violations. 2 remain unresolved.
What to know about Byron's water
Byron ranks #6 out of 65 cities in Wyoming for water quality, placing it one of the best 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, Byron may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Byron, WY water safe to drink?
Byron's tap water meets most EPA standards but has areas that warrant attention. With a grade of A- (89.8/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 593 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Byron
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Byron's water quality assessment. Grade: A- (89.8/100).
Contaminants: Revised Total Coliform Rule.
Contaminants: Revised Total Coliform Rule.
Contaminants: Consumer Confidence Rule.
Federal disaster declaration (FEMA DR-557). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Byron's water supply.
Well within EPA limits.
Violation history
Byron's water system has 8 total violations on record, including 0 health-based violations. 2 remain unresolved.
Flood & environmental risk
Big Horn County has experienced 1 federally declared disaster since 1978. 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 Shoshone River.
Where does Byron's water come from?
Byron's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 593 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Shoshone River (river).
What Byron residents can do
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.
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 Byron
Industrial polluters nearby
Reported releases to surface water by facilities near Byron, ranked by pounds discharged annually.
Total reported releases to surface water: 107 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
WESTERN SUGAR COOPERATIVE LOVELL FACTORY LOVELL, WY82431 | Ammonia | 107 | 5.9 mi |
CETCO LOVELL, WY82431 | — | — | 9.4 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Drought conditions
D2 — severe droughtBig Horn 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
Big Horn County has experienced 1 federally declared disaster since 1978. 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. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Byron compares by contaminant
Explore where Byron ranks among all Wyoming cities for specific contaminants.
Water source & infrastructure
Where Byron's water comes from
Byron'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 593 people through 1 water system.
Water bodies near Byron
Byron is located near 1 notable water body. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving Byron
| System Name | PWSID | Population | Source |
|---|---|---|---|
| BYRON, TOWN OF | WY5600008 | 593 | SWP |
How Byron compares
Full Wyoming rankings →Byron's score of 89.8/100 is above the average of 55/100 among major Wyoming cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Wyoming rankings →About Byron, WY
Wikipedia →Byron is a town in Big Horn County, Wyoming, United States. The population was 562 according to the 2020 census.
Learn more about your water
Guides and resources related to Byron's water quality findings.
Explore water quality across Big Horn
Frequently asked questions
Is Byron, WY tap water safe to drink?
Byron's water quality earned a grade of A- (89.8/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #6 out of 65 cities tested in Wyoming.
What contaminants are in Byron's water?
Lead was measured at 0.0 ppb (90th percentile). 8 violations are on record.
How is Byron'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 Byron?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Byron's water come from?
Byron's water is sourced from Purchased surface water. The city has 1 water system serving approximately 593 residents.
How does Byron's water compare to other cities?
Byron ranks #6 out of 65 cities in Wyoming (better than 91% of state cities) and #2612 out of 15744 cities nationally (83th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Byron's small water system affect quality?
Byron's system serves approximately 593 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 8 violations on record.