Cokeville, Town of
EPA ID: WY5600015 · 535 people served · 1 ZIP code
Not yet resolved: 2 EPA violations at Cokeville, Town of, affecting about 535 residents.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Stable · Risk tier: High · 87% chance of violation in next 12 months
Violations went from 1 (2021) to 1 (2024). Violation counts have remained relatively steady.
Service Area Map
Coverage area for Cokeville, Town of Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Cokeville, Town of serves a community with a median household income of $83,929 and an estimated 734 residents across its service area. Approximately 82% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Cokeville, Town of's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 0% of homes in Lincoln County, Wyoming rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How Cokeville, Town of compares to EPA limits
What This Means For You
Total Trihalomethanes (TTHM) at 1 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Stage 1 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
E. coli at 2 Zero tolerance (any positive sample triggers immediate action) exceeds the EPA maximum of Zero tolerance (any positive sample triggers immediate action). Severe GI illness; potentially fatal kidney failure in children. Consider UV disinfection (99.99%) filtration.
Radium-228 at 1 pCi/L (combined Radium-226 & 228 ≤ 5 pCi/L) exceeds the EPA maximum of pCi/L (combined Radium-226 & 228 ≤ 5 pCi/L). Bone cancer and leukemia (known carcinogen). Consider ion exchange (water softener) filtration.
Contaminant 0800 at 1 mg/L exceeds the EPA maximum of mg/L.
Total Trihalomethanes (TTHM) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
Similar-sized systems in Wyoming
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Cokeville, Town of (EPA ID: WY5600015) is a community water system in Wyoming that serves approximately 535 people from groundwater sources.
This system serves ZIP code 83114 in Cokeville.
Average Home Safety Score: C (62/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2025 | Radium-228 | Monitoring | Unresolved |
| January 1, 2025 | Total Trihalomethanes (TTHM) | Monitoring | Unresolved |
| September 6, 2024 | Contaminant 0800 | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Failure | 2 | No |
| E. coli | Microbiological | 2 | Yes |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 1 | No |
| Radium-228 | Radionuclides | 1 | No |
| Contaminant 0800 | Other Violation | 1 | Yes |
Health Risk Details
E. coli (EPA limit: Zero tolerance (any positive sample triggers immediate action))
Severe GI illness; potentially fatal kidney failure in children At-risk groups: children under 5, elderly, immunocompromised individuals, pregnant women.
Removal methods: UV disinfection (99.99%), chlorination, reverse osmosis. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 83114 | 0.0011 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
- 83114 — Cokeville
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Cokeville, Town of (WY5600015) on EPA.gov.
Frequently Asked Questions
Is Cokeville, Town of water safe to drink?
Cokeville, Town of has recorded 3 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Cokeville, Town of serve?
Cokeville, Town of serves approximately 535 people across 1 ZIP code in Wyoming.
Where does Cokeville, Town of get its water?
The primary water source is groundwater.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Cokeville, Town of (EPA ID: WY5600015) — request the latest Consumer Confidence Report or ask about specific contaminants.