Power County, Idaho
4 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-06-04
Power County's water quality grade reflects a middle-ground assessment — its 4 ZIP codes range from fully compliant to violation-flagged.
How Power County Compares
How Power County Compares
Power County scores 5 points below the Idaho state average (66/100) and 7 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
Key Risk Factors
Health risk index: 13 (asthma 10.5%, diabetes 11.7%)
Estimated additional annual cost per homeowner: $965, driven primarily by energy_code_gap
Infrastructure: 0.46% avg pipe failure probability, 75% of ZIPs at high risk
73.5% of homes built before 1978 (lead paint era)
Violation History (2022–2024)
→ Stable trendEPA violation counts by year across Power County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 6 violations. Past 5 years: 8 total (8 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: $965
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
2,629 housing units in Power 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 Power County
Remediation costs are relatively manageable for most homeowners in Power 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 Power 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 Power County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Riverbend Estates | 92 | 15 |
| 2 | City of American Falls | 4,863 | 15 |
| 3 | Riverview Villa | 200 | 15 |
| 4 | ROCKLAND CITY OF | 242 | 6 |
| 5 | Sunbeam Water | 60 | 6 |
All ZIP Codes in Power County
4 ZIP codes tracked in Power County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 83271 | Rockland | 81 | B | 6 (2 health) | $283K |
| 2 | 83211 | American Falls | 55 | C | 15 (5 health) | $196K |
| 3 | 83212 | Arbon | 53 | D | 0 | $126K |
| 4 | 83243 | Holbrook | 53 | D | 0 | — |
Recommended Buyer Guides for Power County
Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.
- Best Lead Paint Test Kits — 73.5% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Overview
Power County in Idaho covers 4 ZIP codes with an average Home Safety Score of C (61/100).
2 of 4 ZIP codes have recorded EPA violations. 7 health-based violations have been documented.
← Back to Idaho 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.