Green Bay, WI: 5 Health Violations - Home Safety 81/100
12 ZIP codes · 11 water systems · Updated
ZipCheckup grade for Green Bay: B.
The model grade is high, but the records on this page include findings worth reviewing.
Your top priority: match a filter's certification to the violations (5 health-based violations). NSF certified filters →
Based on available records, Green Bay, WI holds an A or B ZipCheckup grade.
How Green Bay Compares
Data: EPA SDWIS
Water Quality Map: Green Bay, WI
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Distribution of Home Safety grades across Green Bay.
Green Bay Water: The Quick Version
- Your city's water systems recorded 22 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0038 mg/L.
- Estimated remediation: $300 per household.
- Health risk index (ZipCheckup composite of CDC data): 12.63.
Water Systems Serving Green Bay
Sorted by reported population served, the top 3 of 11 public water systems mapped to Green Bay, WI appear below, each with its own federal compliance record.
- B
- B
- B
Overview
We track home safety data for 12 ZIP codes in Green Bay, Wisconsin, covering 11 community water systems serving approximately 188,379 people. The EPA snapshots used for this build directly map water systems to 7 of 12 ZIP codes.
7 of 7 ZIP codes with a reported violation count in the available EPA record (100%) have recorded EPA violations. 5 health-based violations appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Green Bay: B (81/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Green Bay water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0038 mg/L (EPA action level: 0.015 mg/L)
- 0 of 7 ZIP codes with known status exceed the EPA lead action level
Radon Risk
12 of 12 ZIP records with known zones are in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Rule | Reporting | 8 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 7 | 3 |
| Lead and Copper Rule Revisions | Treatment Technique | 7 | 5 |
| Public Notice Rule | Reporting | 7 | 5 |
| Revised Total Coliform Rule | Microbiological | 7 | 4 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 54311 | B | 10 | 2 | Green Bay Waterworks |
| 54313 | B | 10 | 2 | Howard Waterworks |
| 54302 | B | 4 | 0 | Green Bay Waterworks |
| 54303 | B | 3 | 2 | Green Bay Waterworks |
| 54301 | B | 2 | 1 | Green Bay Waterworks |
| 54307 | — | 2 | 1 | Allouez Waterworks |
| 54304 | B | 1 | 0 | Green Bay Waterworks |
All ZIP Codes in Green Bay
- 54301 [B] - 2 violations ⚠
- 54302 [B] - 4 violations
- 54303 [B] - 3 violations ⚠
- 54304 [B] - 1 violation
- 54305
- 54306
- 54307 - 2 violations ⚠
- 54308
- 54311 [B] - 10 violations ⚠
- 54313 [B] - 10 violations ⚠
- 54324
- 54344
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
CDC Health Data for Green Bay
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Green Bay
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Green Bay: Remediation Cost in Perspective
Measured against the median home value, the estimated cost of fixing the issues flagged for Green Bay lands in the lowest of the three tiers this page uses.
Estimated remediation costs in Green Bay can be compared with local home values. The $150–$600 estimated range can be set against the median property value; actual costs vary by home. Home values are 11% below the Wisconsin average.
Protecting Children from Lead in Green Bay
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Available area-level lead records for Green Bay do not determine the lead level at an individual tap. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Green Bay
Historical NFIP data for Green Bay contains 323 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $9,421. Among ZIP codes with claim records, 71% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $300 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Green Bay, WI