Clayton County, Georgia
9 ZIP codes · Avg score 63/100 · Grade C · Updated 2026-06-04
Water safety in Clayton County is uneven — some of its 9 ZIP codes meet standards cleanly while others carry documented violations.
How Clayton County Compares
How Clayton County Compares
Clayton County scores 12 points below the Georgia state average (75/100) and 5 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Clayton County, Georgia
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.3 (asthma 11.4%, diabetes 16.2%)
Estimated additional annual cost per homeowner: $949, driven primarily by flood
Infrastructure: 0.257% avg pipe failure probability
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: $949
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Clayton County
Remediation costs are relatively manageable for most homeowners in Clayton 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 Clayton 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 Clayton County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | CLAYTON COUNTY WATER AUTHORITY | 298,374 | 15 |
| 2 | Henry County Water Authority | 176,038 | 15 |
| 3 | Poole`s Mobile Manor | 255 | 15 |
| 4 | DEKALB COUNTY | 743,000 | 15 |
| 5 | Little Mountain S/d, No. 1 Hoa | 61 | 15 |
11 total water systems serve Clayton County.
All ZIP Codes in Clayton County
9 ZIP codes tracked in Clayton County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 30287 | Morrow | 83 | B | 0 | — |
| 2 | 30260 | Morrow | 78 | B | 0 | $190K |
| 3 | 30386 | Atlanta | 77 | B | 4 | — |
| 4 | 30294 | Ellenwood | 64 | C | 15 | $233K |
| 5 | 30236 | Jonesboro | 55 | C | 0 | $220K |
| 6 | 30238 | Jonesboro | 55 | C | 0 | $208K |
| 7 | 30237 | Jonesboro | 53 | D | 0 | — |
| 8 | 30298 | Forest Park | 53 | D | 0 | — |
| 9 | 30274 | Riverdale | 50 | D | 0 | $157K |
Recommended Buyer Guides for Clayton County
Editorial-only picks, screened against the EPA detections on file.
- 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 Clayton County, Georgia
Overview
Clayton County in Georgia covers 9 ZIP codes with an average Home Safety Score of C (63/100).
2 of 9 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.