Franklin County, Washington
6 ZIP codes · Avg score 79/100 · Grade B
ZipCheckup grade for Franklin County: B.
This ZIP has a few items worth a quick check.
Franklin County earns an A or B, the top two of ZipCheckup's five grades, based on the average composite Home Safety Score of its scored ZIP codes. That composite can draw on drinking water records, radon zones, PFAS monitoring and air quality data, so a strong grade summarizes several sources and is not a reading from anyone's tap. Scores also vary from one ZIP code to another, and the 6 ZIP reports listed for the county show where each one stands.
How Franklin County Compares
How Franklin County Compares
Franklin County scores 7 points below the Washington state average (86/100) and 6 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
ZIP Code Risk Map
Water Quality Map: Franklin County, Washington
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.3 (asthma 10.5%, diabetes 10.8%)
Modeled additional annual cost estimate per homeowner: $693, largest modeled factor: Energy Code Gap
40% of homes built before 1980 (lead paint was banned for residential use in 1978)
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 DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $693
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
29,581 housing units in Franklin County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Health Outcomes vs National Average
CDC PLACES data for Franklin County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to Franklin County ZIP codes
5 community water systems mapped to Franklin County ZIP codes; EPA may list more systems serving the county.
- B
- B
- B
- B
- B
Systems with the most violations in Franklin County
5 water systems with violations in EPA records.
- B
- B
- B
- B
- B
All ZIP Codes in Franklin County
6 ZIP codes tracked in Franklin County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 99301 | Pasco | 79 | B | 54 | $353K |
| 2 | 99302 | Pasco | — | — | — | |
| 3 | 99326 | Connell | — | — | $263K | |
| 4 | 99330 | Eltopia | — | — | $292K | |
| 5 | 99335 | Kahlotus | — | — | $184K | |
| 6 | 99343 | Mesa | — | — | $245K |
Recommended Buyer Guides for Franklin County
Nothing on this list means a problem exists in your own home: the matches are drawn from county- and ZIP-level records, so a guide shows up because of an area signal, and only testing at your tap describes a specific household.
- Best Water Testing Kits — Baseline water quality check for your ZIP
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant peace of mind
Overview
Franklin County in Washington covers 6 tracked ZIP records with an average Home Safety Score of B (79/100) across 1 scored records.
1 of 1 ZIP code 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.