Jefferson County, Oklahoma
6 ZIP codes · Avg score 72/100 · Grade B · Updated 2026-07-19
ZipCheckup grade for Jefferson: B.
This ZIP looks solid, with a few items worth a quick check.
Jefferson County's tap water quality puts it in the upper tier nationally; the 6 ZIP codes here record few health-based violations.
How Jefferson County Compares
How Jefferson County Compares
Jefferson County scores 7 points below the Oklahoma state average (79/100) and 4 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
ZIP Code Risk Map
Water Quality Map: Jefferson County, Oklahoma
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 16.9 (asthma 11.7%, diabetes 16.3%)
Estimated additional annual cost per homeowner: $1,092, driven primarily by water_infra
Infrastructure: 0.556% avg pipe failure probability, 80% of ZIPs at high risk
77.4% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Jefferson County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 21 violations. Past 5 years: 62 total (62 health-based). Health-based violations are rising versus the prior 2-year window - worth closer monitoring.
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: $1,092
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
2,195 housing units in Jefferson 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 Jefferson County
Remediation costs are relatively manageable for most homeowners in Jefferson 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 Jefferson County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Jefferson County
6 community water systems serving Jefferson County.
- C
- C
- B
- C
- C
- A
Systems with the most violations in Jefferson County
3 water systems with recorded EPA violations.
- C
- C
- A
All ZIP Codes in Jefferson County
6 ZIP codes tracked in Jefferson County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 73569 | Terral | 93 | A | 9 (2 health) | $60K |
| 2 | 73548 | Hastings | 77 | B | 9 (9 health) | $79K |
| 3 | 73520 | Addington | 66 | C | 0 | $79K |
| 4 | 73561 | Oscar | 66 | C | 0 | — |
| 5 | 73565 | Ryan | 66 | C | 21 (20 health) | $62K |
| 6 | 73573 | Waurika | 62 | C | 31 (28 health) | $79K |
Recommended Buyer Guides for Jefferson County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations - federal data drives the order, not retailer arrangements.
- Best Lead Paint Test Kits — 77.4% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Jefferson County, Oklahoma
Overview
Jefferson County in Oklahoma covers 6 ZIP codes with an average Home Safety Score of B (72/100).
4 of 6 ZIP codes have recorded EPA violations. 59 health-based violations have been documented.
← Back to Oklahoma 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.