Valley County, Idaho
5 ZIP codes · Avg score 54/100 · Grade D · Updated 2026-06-03
For households across Valley County's 5 ZIP codes, below-average water safety data and recurring health violations make local monitoring worthwhile — checking the specific system serving an address is the most actionable starting point.
How Valley County Compares
How Valley County Compares
Valley County scores 12 points below the Idaho state average (66/100) and 14 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Valley County, Idaho
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14 (asthma 10.7%, diabetes 13%)
Estimated additional annual cost per homeowner: $1,534, driven primarily by wildfire
Infrastructure: 0.353% avg pipe failure probability
44% of homes built before 1978 (lead paint era)
Violation History (2023–2024)
→ Stable trendEPA violation counts by year across Valley County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 8 violations. Past 5 years: 11 total (11 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: $1,534
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
12,491 housing units in Valley 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 Valley County
Remediation costs are relatively manageable for most homeowners in Valley 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 Valley 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 Valley County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Mccall | 4,423 | 21 |
| 2 | Kings Pines Estates Water System | 96 | 21 |
| 3 | Jughandle Estates | 200 | 21 |
| 4 | Jug Mountain Ranch Subdivision | 100 | 21 |
| 5 | YELLOW PINE WATER USERS INC | 72 | 8 |
10 total water systems serve Valley County.
All ZIP Codes in Valley County
5 ZIP codes tracked in Valley County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 83611 | Cascade | 61 | C | 2 | $405K |
| 2 | 83615 | Donnelly | 61 | C | 7 | $689K |
| 3 | 83638 | Mccall | 58 | C | 21 (6 health) | $685K |
| 4 | 83677 | Yellow Pine | 52 | D | 8 | — |
| 5 | 83671 | Warren | 40 | D | 0 | — |
Recommended Buyer Guides for Valley 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 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
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Deep Dive Reports
Detailed analysis for Valley County, Idaho
Overview
Valley County in Idaho covers 5 ZIP codes with an average Home Safety Score of D (54/100).
4 of 5 ZIP codes have recorded EPA violations. 6 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.
What You Can Do
Valley County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
44% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.