COUNTY REPORT WA

Yakima County, Washington

25 ZIP codes · Avg score 78/100 · Grade B

ZipCheckup grade for Yakima County: B.

This ZIP has a few items worth a quick check.

Yakima County: upper grades, 25 ZIPs.

How Yakima County Compares

Yakima County78/100
Washington avg86/100
National avg73/100

How Yakima County Compares

B
County Grade
78/100
Avg Safety Score
25
ZIP Codes
21
Water Systems

Yakima County scores 8 points below the Washington state average (86/100) and 5 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

B
County Grade
78
Avg Safety Score
25
ZIP Codes
Best ZIP: 98948 (83/100)
Lowest ZIP: 98951 (70/100)
$238K
Median Home Value
$300
Avg Remediation (0.13% of home value)

ZIP Code Risk Map

Water Quality Map: Yakima County, Washington

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Key Risk Factors

Health risk index: 12.9 (asthma 10.7%, diabetes 12.9%)

Modeled additional annual cost estimate per homeowner: $3,042, largest modeled factor: Sea Level

60% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 10.7% (national: 8.9%)
Diabetes 12.9% (national: 10.5%)
Obesity 39.7% (national: 32.4%)

Black markers indicate national averages. Source: CDC PLACES, Census ACS.

Infrastructure Overview

1973
Median Build Year
60%
Pre-1980 Housing
39/100
Infrastructure Stress Indicator
29%
ZIPs with High Infrastructure Stress
Low
Lead Pipe Risk

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: $3,042

Sea Level Rise $3,000/yr
Wildfire $1,200/yr
Flood $657/yr

Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).

Housing Age Distribution

91,149 housing units in Yakima County

Pre-1940 14%
1940–1959 18%
1960–1979 28%
1980–1999 23%
2000+ 17%

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 Yakima County

$238K
Median Home Value
$300
Est. Remediation Cost
0.1%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in Yakima County can be compared with the median property value; actual costs vary by property.

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 Yakima County residents

Asthma 10.7% (US avg: 8.9%)
Diabetes 12.9% (US avg: 11%)
Obesity 39.7% (US avg: 32.4%)

Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.

Water systems mapped to Yakima County ZIP codes

8 community water systems mapped to Yakima County ZIP codes; EPA may list more systems serving the county.

Show all 8 water systems

21 water systems mapped to Yakima County ZIP codes in our data; EPA may list more systems serving the county.

Systems with the most violations in Yakima County

5 water systems with violations in EPA records.

All ZIP Codes in Yakima County

25 ZIP codes tracked in Yakima County.

# ZIP Code City Safety Score Grade Violations Home Value
1 98948 Toppenish 83 B 2 $218K
2 98932 Granger 82 B 3 (1 health) $230K
3 98937 Naches 82 B 4 $343K
4 98942 Selah 82 B 3 (1 health) $352K
5 98944 Sunnyside 82 B 5 $230K
6 98902 Yakima 76 B 21 $238K
7 98903 Yakima 76 B 21 $266K
8 98930 Grandview 75 B 25 (1 health) $278K
9 98901 Yakima 74 B 27 (1 health) $268K
10 98908 Yakima 74 B 26 (1 health) $357K
11 98936 Moxee 74 B 26 (1 health) $325K
12 98951 Wapato 70 B 38 (1 health) $214K
13 98904 Yakima — — —
14 98907 Yakima — — —
15 98909 Yakima — — —
16 98920 Brownstown — — —
17 98921 Buena — — —
18 98923 Cowiche — — $228K
19 98933 Harrah — — $225K
20 98935 Mabton — — $196K
21 98938 Outlook — — 3 (1 health) $174K
22 98939 Parker — — —
23 98947 Tieton — — $240K
24 98952 White Swan — — $111K
25 98953 Zillah — — 10 (1 health) $363K

Recommended Buyer Guides for Yakima County

These buyer guides are matched by rule rather than by hand - a PFAS record adds a PFAS filter guide, a lead action-level exceedance adds lead filter guides, a high share of pre-1978 homes adds lead paint test kits, EPA Radon Zone 1 add radon kits, and a top flood or wildfire risk adds related equipment.

Overview

Yakima County in Washington covers 25 tracked ZIP records with an average Home Safety Score of B (78/100) across 12 scored records.

14 of 14 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 4 health-based violations appear in the available health breakdown.

← Back to Washington Home Safety Profile

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Frequently Asked Questions

Is water safe in Yakima County?
Yakima County receives an average Home Safety grade of B from its scored ZIP records (25 ZIP codes tracked); this is a composite index, not a tap-water test.
How many water systems serve Yakima County?
We map 21 public water systems to 25 ZIP codes in our data for Yakima County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Yakima County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Yakima County is sea level. Across all modeled risk factors, the estimated average additional annual cost is $3,042 per homeowner; actual costs vary by home.
How old are homes in Yakima County?
The median home build year in Yakima County is 1973. 60% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have older plumbing materials.
How does Yakima County compare to Washington?
Yakima County has an average Home Safety Score of 78/100 under model 4.0.0, which is below the Washington state average of 86/100.

How to cite this page

APA ZipCheckup. (2026). Yakima County, WA: HSS 78/100; PFAS Found in Water. https://zipcheckup.com/county/washington/yakima/
BibTeX
@misc{zipcheckup-county-washington-yakima,
  author = {{ZipCheckup}},
  title  = {{Yakima County, WA: HSS 78/100; PFAS Found in Water}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/washington/yakima/}
}

Page version: October 2026.

Get safety alerts for Yakima, Washington

Free updates when EPA data changes for this area. No spam.

Unsubscribe anytime. Privacy Policy.

Share This Page

X Facebook
Check your water filter options Free tool - no phone call required.