COUNTY REPORT OK

Washington County, Oklahoma

8 ZIP codes · Avg score 85/100 · Grade A

ZipCheckup grade for Washington County: A.

Checked records flag no major concern; missing data is unknown.

ZipCheckup rates Washington County in the top two of its five grades; 8 ZIP codes are tracked there.

How Washington County Compares

Washington County85/100
Oklahoma avg86/100
National avg73/100

How Washington County Compares

A
County Grade
85/100
Avg Safety Score
8
ZIP Codes
10
Water Systems

Washington County scores 1 points below the Oklahoma state average (86/100) and 12 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

A
County Grade
85
Avg Safety Score
8
ZIP Codes
Best ZIP: 74061 (89/100)
Lowest ZIP: 74029 (83/100)
$145K
Median Home Value
$900
Avg Remediation (0.62% of home value)

ZIP Code Risk Map

Water Quality Map: Washington County, Oklahoma

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: 15 (asthma 11.6%, diabetes 13.2%)

Modeled additional annual cost estimate per homeowner: $1,609, largest modeled factor: Flood

67% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 11.6% (national: 8.9%)
Diabetes 13.2% (national: 10.5%)
Obesity 42.4% (national: 32.4%)

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

Infrastructure Overview

1974
Median Build Year
67%
Pre-1980 Housing
56/100
Infrastructure Stress Indicator
100%
ZIPs with High Infrastructure Stress
High
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: $1,609

Flood $1,267/yr
Wildfire $300/yr
Energy Code Gap $270/yr

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

Housing Age Distribution

23,063 housing units in Washington County

Pre-1940 10%
1940–1959 26%
1960–1979 31%
1980–1999 19%
2000+ 14%

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 Washington County

$145K
Median Home Value
$900
Est. Remediation Cost
0.6%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in Washington 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 Washington County residents

Asthma 11.6% (US avg: 8.9%)
Diabetes 13.2% (US avg: 11%)
Obesity 42.4% (US avg: 32.4%)

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

Water systems mapped to Washington County ZIP codes

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

Show all 8 water systems

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

Systems with the most violations in Washington County

5 water systems with violations in EPA records.

All ZIP Codes in Washington County

8 ZIP codes tracked in Washington County.

# ZIP Code City Safety Score Grade Violations Home Value
1 74061 Ramona 89 A 15 (3 health) $225K
2 74003 Bartlesville 83 B 171 (99 health) $107K
3 74006 Bartlesville 83 B 115 (34 health) $185K
4 74029 Dewey 83 B 55 (8 health) $139K
5 74004 Bartlesville — — —
6 74005 Bartlesville — — —
7 74051 Ochelata — — 15 (3 health) $152K
8 74082 Vera — — $85K

Recommended Buyer Guides for Washington County

Selection follows a fixed set of rules applied to local records: signals such as PFAS detections, lead action-level exceedances on record, a large share of pre-1978 housing, EPA Radon Zone 1, or a top flood or wildfire risk each add a related guide, and when none applies, general water testing and filtration guides are shown instead.

Overview

Washington County in Oklahoma covers 8 tracked ZIP records with an average Home Safety Score of A (85/100) across 4 scored records.

5 of 5 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 128 health-based violations appear in the available health breakdown.

← Back to Oklahoma 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 Washington County?
Washington County receives an average Home Safety grade of A from its scored ZIP records (8 ZIP codes tracked); this is a composite index, not a tap-water test.
How many water systems serve Washington County?
We map 10 public water systems to 8 ZIP codes in our data for Washington County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Washington County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Washington County is flood. Across all modeled risk factors, the estimated average additional annual cost is $1,609 per homeowner; actual costs vary by home.
How old are homes in Washington County?
The median home build year in Washington County is 1974. 67% 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 Washington County compare to Oklahoma?
Washington County has an average Home Safety Score of 85/100 under model 4.0.0, which is below the Oklahoma state average of 86/100.

How to cite this page

APA ZipCheckup. (2026). Washington County, OK: HSS 85/100; 128 Health Violations. https://zipcheckup.com/county/oklahoma/washington/
BibTeX
@misc{zipcheckup-county-oklahoma-washington,
  author = {{ZipCheckup}},
  title  = {{Washington County, OK: HSS 85/100; 128 Health Violations}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/oklahoma/washington/}
}

Page version: October 2026.

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