Gwinnett County, Georgia
38 ZIP codes · Avg score 65/100 · Grade C · Updated
ZipCheckup grade for Gwinnett County: C.
A mixed picture - some signals here are worth your attention.
Within Gwinnett County, safety data across 38 ZIP codes suggests a fair but uneven system - violations are present and worth checking at the ZIP level.
How Gwinnett County Compares
How Gwinnett County Compares
Gwinnett County scores 9 points below the Georgia state average (74/100) and 8 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Gwinnett County, Georgia
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.6 (asthma 9.2%, diabetes 12.6%)
Estimated additional annual cost per homeowner: $568, driven primarily by flood
Violation History (2022–2023)
→ Stable trendEPA violation counts by year across Gwinnett County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 2 violations. Past 5 years: 3 total (3 health-based).
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
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $568
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 Gwinnett County
Remediation costs are relatively manageable for most homeowners in Gwinnett 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 Gwinnett County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Gwinnett County
8 community water systems serving Gwinnett County.
- C
- D
- C
- C
- C
- D
Show all 8 water systems
- C
- C
13 total water systems serve Gwinnett County.
Systems with the most violations in Gwinnett County
5 water systems with recorded EPA violations.
- C
- D
- C
- C
- C
All ZIP Codes in Gwinnett County
38 ZIP codes tracked in Gwinnett County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 30017 | Grayson | 67 | C | 0 | $392K |
| 2 | 30019 | Dacula | 67 | C | 0 | $389K |
| 3 | 30043 | Lawrenceville | 67 | C | 0 | $345K |
| 4 | 30044 | Lawrenceville | 67 | C | 0 | $295K |
| 5 | 30045 | Lawrenceville | 67 | C | 0 | $333K |
| 6 | 30046 | Lawrenceville | 67 | C | 0 | $303K |
| 7 | 30078 | Snellville | 67 | C | 0 | $317K |
| 8 | 30039 | Snellville | 66 | C | 1 | $275K |
| 9 | 30047 | Lilburn | 66 | C | 1 | $326K |
| 10 | 30092 | Norcross | 66 | C | 2 | $466K |
| 11 | 30097 | Duluth | 66 | C | 3 | $592K |
| 12 | 30052 | Loganville | 65 | C | 2 | $325K |
| 13 | 30071 | Norcross | 65 | C | 1 | $334K |
| 14 | 30096 | Duluth | 65 | C | 1 | $343K |
| 15 | 30518 | Buford | 63 | C | 5 | $367K |
| 16 | 30093 | Norcross | 60 | C | 12 | $246K |
| 17 | 30519 | Buford | 46 | D | 5 | $378K |
| 18 | 30003 | Norcross | — | — | — | |
| 19 | 30026 | North Metro | — | — | — | |
| 20 | 30029 | North Metro | — | — | — | |
| 21 | 30042 | Lawrenceville | — | — | — | |
| 22 | 30048 | Lilburn | — | — | — | |
| 23 | 30049 | Lawrenceville | — | — | — | |
| 24 | 30086 | Stone Mountain | — | — | — | |
| 25 | 30091 | Norcross | — | — | — | |
| 26 | 30095 | Duluth | — | — | — | |
| 27 | 30098 | Duluth | — | — | — | |
| 28 | 30099 | Duluth | — | — | — | |
| 29 | 30333 | Atlanta | — | — | — | |
| 30 | 30356 | Atlanta | — | — | — | |
| 31 | 30359 | Atlanta | — | — | — | |
| 32 | 30362 | Atlanta | — | — | — | |
| 33 | 30515 | Buford | — | — | — | |
| 34 | 31119 | Atlanta | — | — | — | |
| 35 | 31141 | Atlanta | — | — | — | |
| 36 | 31145 | Atlanta | — | — | — | |
| 37 | 31146 | Atlanta | — | — | — | |
| 38 | 39901 | Atlanta | — | — | — |
Recommended Buyer Guides for Gwinnett County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations - federal data drives the order, not retailer arrangements.
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- 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 Gwinnett County, Georgia
Overview
Gwinnett County in Georgia covers 38 tracked ZIP records with an average Home Safety Score of C (65/100) across 17 scored records.
10 of 17 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. The available record reports no health-based violations for this measured scope.
← Back to Georgia Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.