Grady County, Oklahoma
10 ZIP codes · Avg score 75/100 · Grade B · Updated 2026-06-03
Water utilities serving Grady County's 10 ZIP codes have built a consistent compliance record — the county's above-average grade reflects years of data showing low violation rates and no systemic health concerns.
How Grady County Compares
How Grady County Compares
Grady County scores 4 points below the Oklahoma state average (79/100) and 7 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Grady County, Oklahoma
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14 (asthma 11.1%, diabetes 12%)
Estimated additional annual cost per homeowner: $1,310, driven primarily by flood
Infrastructure: 0.437% avg pipe failure probability, 70% of ZIPs at high risk
63.8% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Grady County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 39 violations. Past 5 years: 92 total (92 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: $1,310
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
19,402 housing units in Grady 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 Grady County
Remediation costs are relatively manageable for most homeowners in Grady 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 Grady 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 Grady County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Grady Company Rwd #6 | 3,930 | 143 |
| 2 | Grady Company Rwd #7 (ninnekah) | 2,425 | 79 |
| 3 | Alex | 635 | 56 |
| 4 | Grady Company Rwd #2 | 455 | 55 |
| 5 | Grady Company Rwd #1 | 300 | 55 |
18 total water systems serve Grady County.
All ZIP Codes in Grady County
10 ZIP codes tracked in Grady County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 73082 | Rush Springs | 99 | A | 0 | $116K |
| 2 | 73092 | Verden | 93 | A | 2 | $127K |
| 3 | 73067 | Ninnekah | 86 | A | 5 (1 health) | $123K |
| 4 | 73089 | Tuttle | 85 | A | 34 (2 health) | $264K |
| 5 | 73011 | Bradley | 83 | B | 44 (1 health) | $78K |
| 6 | 73002 | Alex | 65 | C | 7 (1 health) | $102K |
| 7 | 73023 | Chickasha | 65 | C | 21 (14 health) | — |
| 8 | 73059 | Minco | 61 | C | 3 (1 health) | $161K |
| 9 | 73018 | Chickasha | 60 | C | 21 (14 health) | $127K |
| 10 | 73004 | Amber | 55 | C | 34 (9 health) | $160K |
Recommended Buyer Guides for Grady County
Designed to find the guide that fits the county, not the other way around — the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.
- Best Water Filters for Lead — Lead above EPA action level in 2 ZIP codes
- Best Lead Paint Test Kits — 63.8% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Grady County, Oklahoma
Overview
Grady County in Oklahoma covers 10 ZIP codes with an average Home Safety Score of B (75/100).
9 of 10 ZIP codes have recorded EPA violations. 43 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.