Whitman County, Washington
23 ZIP codes · Avg score 82/100 · Grade B · Updated
ZipCheckup grade for Whitman County: B.
This ZIP looks solid, with a few items worth a quick check.
Unlike many counties its size, Whitman County keeps violation rates low - all 23 ZIP codes score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.
How Whitman County Compares
How Whitman County Compares
Whitman County scores 4 points below the Washington state average (86/100) and 9 points above the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Whitman County, Washington
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 9.9 (asthma 12%, diabetes 7.4%)
Estimated additional annual cost per homeowner: $1,411, driven primarily by energy_code_gap
79.3% of homes built before 1978 (lead paint era)
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,411
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
21,072 housing units in Whitman 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 Whitman County
Remediation costs are relatively manageable for most homeowners in Whitman 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 Whitman County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Whitman County
3 community water systems serving Whitman County.
- B
- B
- B
Systems with the most violations in Whitman County
2 water systems with recorded EPA violations.
- B
- B
All ZIP Codes in Whitman County
23 ZIP codes tracked in Whitman County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 99163 | Pullman | 82 | B | 4 | $413K |
| 2 | 99111 | Colfax | 81 | B | 8 | $264K |
| 3 | 99017 | Lamont | — | — | $106K | |
| 4 | 99033 | Tekoa | — | — | $272K | |
| 5 | 99102 | Albion | — | — | $171K | |
| 6 | 99104 | Belmont | — | — | — | |
| 7 | 99113 | Colton | — | — | 4 | $356K |
| 8 | 99125 | Endicott | — | — | $172K | |
| 9 | 99128 | Farmington | — | — | $300K | |
| 10 | 99130 | Garfield | — | — | $211K | |
| 11 | 99136 | Hay | — | — | $119K | |
| 12 | 99143 | Lacrosse | — | — | $120K | |
| 13 | 99149 | Malden | — | — | $74K | |
| 14 | 99158 | Oakesdale | — | — | $242K | |
| 15 | 99161 | Palouse | — | — | $286K | |
| 16 | 99164 | Pullman | — | — | — | |
| 17 | 99165 | Pullman | — | — | — | |
| 18 | 99170 | Rosalia | — | — | $216K | |
| 19 | 99171 | Saint John | — | — | $210K | |
| 20 | 99174 | Steptoe | — | — | $225K | |
| 21 | 99176 | Thornton | — | — | $258K | |
| 22 | 99179 | Uniontown | — | — | $324K | |
| 23 | 99333 | Hooper | — | — | $557K |
Recommended Buyer Guides for Whitman County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Lead Paint Test Kits — 79.3% of homes built before 1978
Deep Dive Reports
Detailed analysis for Whitman County, Washington
Overview
Whitman County in Washington covers 23 tracked ZIP records with an average Home Safety Score of B (82/100) across 2 scored records.
3 of 3 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. The available record reports no health-based violations for this measured scope.
← Back to Washington Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.