Neighborhood Report
Grade B
Green Bay, WI Neighborhood Water Quality — Grade B
12 ZIP codes · 72 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-04
Water quality varies significantly across Green Bay, WI. We analyzed 12 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade B (78/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 12 | 100% |
| C | 0 | 0% |
| D | 0 | 0% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Green Bay ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 54304 | 81 | B | 6 | 0.0025 mg/L |
| 2 | 54305 | 81 | B | 6 | 0.0025 mg/L |
| 3 | 54306 | 81 | B | 6 | 0.0025 mg/L |
| 4 | 54307 | 81 | B | 6 | 0.0025 mg/L |
| 5 | 54308 | 81 | B | 6 | 0.0025 mg/L |
| 6 | 54324 | 81 | B | 6 | 0.0025 mg/L |
| 7 | 54344 | 81 | B | 6 | 0.0025 mg/L |
| 8 | 54311 | 76 | B | 6 | 0.0025 mg/L |
| 9 | 54313 | 76 | B | 6 | 0.0025 mg/L |
| 10 | 54301 | 71 | B | 6 | 0.0025 mg/L |
| 11 | 54302 | 71 | B | 6 | 0.0025 mg/L |
| 12 | 54303 | 71 | B | 6 | 0.0025 mg/L |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 7 neighborhoods score better than county average
- 3 neighborhoods score worse than county average
EPA Violations
- 72 total violations across Green Bay
- 24 health-based violations
- 12 of 12 ZIP codes have violations
- 0 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Haloacetic Acids (HAA5) | 12 | 12 |
| Gross Beta | 12 | 12 |
| Stage 2 DBP Rule | 12 | 12 |
| Lead and Copper Rule | 12 | 12 |
| Consumer Confidence Report Rule | 12 | 12 |
Frequently Asked Questions
What is the safest neighborhood in Green Bay?
ZIP code 54304 has the highest safety score in Green Bay at 81/100 (grade B). Check the full report for details.
Is Green Bay water safe to drink?
Green Bay has an average water safety score of 78/100 (B). Water quality varies by neighborhood — no ZIP codes currently exceed EPA lead limits. Always check your specific ZIP code.
Related Pages
Data Sources
- EPA SDWIS
- U.S. Census Bureau
Updated daily.