Greer County, Oklahoma
4 ZIP codes · Avg score 84/100 · Grade B · Updated 2026-06-03
Based on current EPA data, Greer County's 4 ZIP codes maintain an above-average drinking water safety record.
How Greer County Compares
How Greer County Compares
Greer County scores 5 points above the Oklahoma state average (79/100) and 16 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 15.1 (asthma 10.9%, diabetes 14%)
Estimated additional annual cost per homeowner: $788, driven primarily by energy_code_gap
Infrastructure: 0.478% avg pipe failure probability, 100% of ZIPs at high risk
84.5% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Greer County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 15 violations. Past 5 years: 30 total (30 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: $788
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
2,680 housing units in Greer 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 Greer County
Remediation costs are relatively manageable for most homeowners in Greer 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 Greer County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Greer County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Granite Public Water System | 1,425 | 41 |
| 2 | Beckham Company Rwd # 1 | 1,595 | 41 |
| 3 | Thirsty Water Corporation | 81 | 21 |
| 4 | Oklahoma State Reformatory | 999 | 21 |
| 5 | Willow | 114 | 20 |
12 total water systems serve Greer County.
All ZIP Codes in Greer County
4 ZIP codes tracked in Greer County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 73547 | Granite | 94 | A | 21 (1 health) | $119K |
| 2 | 73554 | Mangum | 93 | A | 16 (2 health) | $97K |
| 3 | 73673 | Willow | 83 | B | 20 (1 health) | — |
| 4 | 73571 | Vinson | 66 | C | 0 | — |
Recommended Buyer Guides for Greer County
Eight risk categories drive the selection — PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback — and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- Best Lead Paint Test Kits — 84.5% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Overview
Greer County in Oklahoma covers 4 ZIP codes with an average Home Safety Score of B (84/100).
3 of 4 ZIP codes have recorded EPA violations. 4 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.