Cook County, Georgia
4 ZIP codes · Avg score 96/100 · Grade A · Updated 2026-06-03
Unlike many counties its size, Cook County keeps violation rates low — all 4 ZIP codes score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.
How Cook County Compares
How Cook County Compares
Cook County scores 21 points above the Georgia state average (75/100) and 28 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 15.6 (asthma 11%, diabetes 16.5%)
Estimated additional annual cost per homeowner: $483, driven primarily by energy_code_gap
Infrastructure: 0.295% avg pipe failure probability
52.5% of homes built before 1978 (lead paint era)
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: $483
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
7,608 housing units in Cook 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 Cook County
Remediation costs are relatively manageable for most homeowners in Cook 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 Cook 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 Cook County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Cecil | 446 | 5 |
| 2 | Adel | 5,970 | 4 |
| 3 | Sparks | 1,968 | 4 |
| 4 | Lenox | 1,083 | 3 |
| 5 | The Enclave Subdivision | 32 | 1 |
8 total water systems serve Cook County.
All ZIP Codes in Cook County
4 ZIP codes tracked in Cook County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 31637 | Lenox | 99 | A | 0 | $113K |
| 2 | 31620 | Adel | 95 | A | 1 | $138K |
| 3 | 31627 | Cecil | 94 | A | 5 | $75K |
| 4 | 31647 | Sparks | 94 | A | 3 | $109K |
Recommended Buyer Guides for Cook 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 Lead Paint Test Kits — 52.5% of homes built before 1978
Overview
Cook County in Georgia covers 4 ZIP codes with an average Home Safety Score of A (96/100).
3 of 4 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Georgia 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.