Cheyenne, WY: 8 Health Violations — 35/100 (2026)
8 ZIP codes · 5 water systems · Updated 2026-06-03
Compared to WY averages, Cheyenne scores below the baseline — health violations appear more frequently than the norm and the city's grade reflects that ongoing shortfall.
How Cheyenne Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Cheyenne, WY
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Cheyenne's 8 ZIP codes.
Key Facts for Cheyenne Residents
- Your city's water systems recorded 48 violations in the past 5 years.
- Average lead level: 0.015 mg/L.
- Estimated remediation: $3,353 per household.
- CDC health risk index: 12.02 — above typical levels.
Cheyenne's Water Providers
Across Cheyenne, WY, residential water comes from 3 primary utilities rather than a single consolidated provider. Each system operates independently — managing its own distribution infrastructure, rate schedules, and EPA compliance filings. Federal records track 5 water systems in the area, with these top providers accounting for the majority of residential connections.
Overview
We track water quality and home safety data for 8 ZIP codes in Cheyenne, Wyoming, covering 5 community water systems serving approximately 95,110 people.
8 of 8 ZIP codes (100%) have recorded EPA violations. 8 health-based violations documented.
Home Safety Score
Average Home Safety Score for Cheyenne: F (35/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Cheyenne water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0150 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 8 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 18 | 8 |
| Surface Water Treatment Rule | Treatment Technique | 9 | 8 |
| Consumer Confidence Report Rule | Reporting | 9 | 8 |
| E. coli | Microbiological | 9 | 8 |
| Contaminant 0700 | Other | 9 | 8 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 82001 | F | 6 | 1 | Cheyenne Board of Public Utilities |
| 82002 | F | 6 | 1 | Cheyenne Board of Public Utilities |
| 82003 | D | 6 | 1 | Cheyenne Board of Public Utilities |
| 82006 | F | 6 | 1 | Cheyenne Board of Public Utilities |
| 82007 | F | 6 | 1 | Cheyenne Board of Public Utilities |
| 82008 | F | 6 | 1 | Cheyenne Board of Public Utilities |
| 82009 | F | 6 | 1 | Cheyenne Board of Public Utilities |
| 82010 | F | 6 | 1 | Cheyenne Board of Public Utilities |
All ZIP Codes in Cheyenne
- 82001 [F] — 6 violations ⚠
- 82002 [F] — 6 violations ⚠
- 82003 [D] — 6 violations ⚠
- 82006 [F] — 6 violations ⚠
- 82007 [F] — 6 violations ⚠
- 82008 [F] — 6 violations ⚠
- 82009 [F] — 6 violations ⚠
- 82010 [F] — 6 violations ⚠
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Cheyenne Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What's in Cheyenne's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Remediation Costs Compare in Cheyenne
Viewed from a financial planning lens, Cheyenne sits in the moderate remediation-share tier — the equity impact of addressing documented issues is real, and deliberate preparation separates smooth outcomes from disruptive ones for most homeowners.
Remediation costs are moderate relative to home values in Cheyenne. The estimated $2,185–$4,670 range is manageable for most homeowners but still worth budgeting for. Home values are 13% below the Wyoming average.
Cheyenne: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Cheyenne appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Cheyenne: Flood History & Water Damage Risk
Across the NFIP's long tracking period, Cheyenne shows 191 claims and 50% of ZIP codes within FEMA-designated flood zones — figures that place it in moderate flood exposure territory. At this level, the water-quality implications of flooding — contaminated wells, stressed treatment intake, distribution backflow — move from theoretical edge cases to genuine periodic risks, particularly during higher-severity events.
Cheyenne has a moderate flood history with 191 FEMA claims averaging $4,486 per payout. 50% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$3,353</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Cheyenne
- Test your water at home. City-level data shows averages — your tap may differ. Lead testing is especially recommended given the area's lead levels.
- Install a certified water filter. Filters rated for Total Trihalomethanes (TTHM) can reduce the most common contaminant found in Cheyenne's water.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Cheyenne, WY