Sweetwater County, Wyoming
11 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-06-03
The systems supplying Sweetwater County's 11 ZIP codes vary in performance — most meet minimum standards, but violations in select areas are on record.
How Sweetwater County Compares
How Sweetwater County Compares
Sweetwater County scores 6 points above the Wyoming state average (55/100) and 7 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Sweetwater County, Wyoming
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.7 (asthma 10.3%, diabetes 11.1%)
Estimated additional annual cost per homeowner: $352, driven primarily by energy_code_gap
Infrastructure: 0.368% avg pipe failure probability, 27% of ZIPs at high risk
62.4% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Sweetwater County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 3 violations. Past 5 years: 9 total (9 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $352
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
19,042 housing units in Sweetwater County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Sweetwater County
Remediation costs are relatively manageable for most homeowners in Sweetwater County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Sweetwater County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Sweetwater County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Pioneer Mobile Home Park | 1,000 | 27 |
| 2 | City of Rock Springs, | 24,000 | 24 |
| 3 | White Mountain W&s District | 3,000 | 24 |
| 4 | Clearview I&s District | 930 | 24 |
| 5 | Skyline Village Mobile Home Pk | 700 | 24 |
17 total water systems serve Sweetwater County.
All ZIP Codes in Sweetwater County
11 ZIP codes tracked in Sweetwater County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 82935 | Green River | 69 | C | 3 | $255K |
| 2 | 82336 | Wamsutter | 66 | C | 0 | — |
| 3 | 82929 | Little America | 66 | C | 0 | — |
| 4 | 82322 | Bairoil | 65 | C | 7 (1 health) | — |
| 5 | 82902 | Rock Springs | 65 | C | 12 (1 health) | — |
| 6 | 82932 | Farson | 65 | C | 10 (1 health) | $158K |
| 7 | 82901 | Rock Springs | 64 | C | 12 (1 health) | $239K |
| 8 | 82942 | Point Of Rocks | 61 | C | 2 (1 health) | — |
| 9 | 82934 | Granger | 59 | C | 6 (3 health) | $113K |
| 10 | 82945 | Superior | 56 | C | 17 (2 health) | — |
| 11 | 82943 | Reliance | 40 | D | 0 | — |
Recommended Buyer Guides for Sweetwater County
Filtered against federal data, fitted to local risks.
- Best Lead Paint Test Kits — 62.4% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Sweetwater County, Wyoming
Overview
Sweetwater County in Wyoming covers 11 ZIP codes with an average Home Safety Score of C (61/100).
8 of 11 ZIP codes have recorded EPA violations. 10 health-based violations have been documented.
← Back to Wyoming water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.