Pottawatomie County, Oklahoma
11 ZIP codes · Avg score 67/100 · Grade C · Updated 2026-06-03
Within Pottawatomie County, 11 tracked ZIP codes reveal moderate water quality — national standards are generally met, with some documented exceptions.
How Pottawatomie County Compares
How Pottawatomie County Compares
Pottawatomie County scores 12 points below the Oklahoma state average (79/100) and 1 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Pottawatomie County, Oklahoma
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.7 (asthma 12.2%, diabetes 12.8%)
Estimated additional annual cost per homeowner: $1,238, driven primarily by flood
Infrastructure: 0.415% avg pipe failure probability, 45% of ZIPs at high risk
53.6% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Pottawatomie County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 103 violations. Past 5 years: 141 total (141 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: $1,238
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
34,215 housing units in Pottawatomie 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 Pottawatomie County
Remediation costs are relatively manageable for most homeowners in Pottawatomie 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 Pottawatomie 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 Pottawatomie County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Shawnee Municipal Authority | 29,990 | 204 |
| 2 | Pottawatomie Company Development Authority | 1,200 | 204 |
| 3 | Mcloud | 2,939 | 183 |
| 4 | Pottawatomie Company Rwd #3 (dale Plant) | 313 | 129 |
| 5 | Pottawatomie County Rwd #3 | 560 | 104 |
16 total water systems serve Pottawatomie County.
All ZIP Codes in Pottawatomie County
11 ZIP codes tracked in Pottawatomie County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 74840 | Earlsboro | 94 | A | 8 (1 health) | $155K |
| 2 | 74851 | Mcloud | 88 | A | 90 (1 health) | $160K |
| 3 | 74802 | Shawnee | 70 | B | 13 (8 health) | — |
| 4 | 74826 | Asher | 70 | B | 27 (20 health) | $136K |
| 5 | 74852 | Macomb | 66 | C | 0 | $134K |
| 6 | 74866 | Saint Louis | 66 | C | 0 | $67K |
| 7 | 74857 | Newalla | 65 | C | 0 | $175K |
| 8 | 74801 | Shawnee | 60 | C | 13 (8 health) | $123K |
| 9 | 74804 | Shawnee | 60 | C | 13 (8 health) | $199K |
| 10 | 74878 | Wanette | 53 | D | 38 (19 health) | $156K |
| 11 | 74873 | Tecumseh | 40 | D | 67 (16 health) | $130K |
Recommended Buyer Guides for Pottawatomie County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 53.6% 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 Pottawatomie County, Oklahoma
Overview
Pottawatomie County in Oklahoma covers 11 ZIP codes with an average Home Safety Score of C (67/100).
8 of 11 ZIP codes have recorded EPA violations. 81 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.