These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.
EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.
Green Bay Waterworks
WI4050356 · Surface water · 107,369 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
No active health-based record in this imported snapshot
Find this utility’s official report →Measurements (1)
An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.
Lead (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- Action level
17% of the listed benchmark
Monitoring period: Jun 1, 2023 to Sep 30, 2023
Violation history (0)
No record returned in this imported window. This is not a guarantee of tap-water safety.
Howard Waterworks
WI4050468 · Surface water · 21,133 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
No active health-based record in this imported snapshot
Find this utility’s official report →Measurements (2)
An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.
Lead (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- Action level
8% of the listed benchmark
Monitoring period: Jun 1, 2023 to Sep 30, 2023
Copper (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- Action level
108% of the listed benchmark
Monitoring period: Jul 1, 1992 to Dec 31, 1992
Violation history (3)
Imported violation history for Howard Waterworks| Rule | Status | Period |
|---|
| LEAD AND COPPER RULE REVISIONSHealth-based | Resolved | Oct 17, 2024 to May 27, 2025 |
| Public Notice | Resolved | Oct 17, 2024 to Jun 27, 2025 |
| Groundwater RuleHealth-based | Resolved | Dec 16, 2023 to Dec 19, 2023 |
Ashwaubenon Waterworks
WI4050456 · Surface water · 17,730 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
No active health-based record in this imported snapshot
Find this utility’s official report →Measurements (1)
An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.
Lead (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- Action level
23% of the listed benchmark
Monitoring period: Jun 1, 2023 to Sep 30, 2023
Violation history (1)
Imported violation history for Ashwaubenon Waterworks| Rule | Status | Period |
|---|
| Revised Total Coliform Rule | Resolved | Sep 1, 2025 to Sep 30, 2025 |
Bellevue Waterworks
WI4050459 · Surface water · 16,715 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
No active health-based record in this imported snapshot
Find this utility’s official report →Measurements (1)
An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.
Lead (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- Action level
18% of the listed benchmark
Monitoring period: Jun 1, 2023 to Sep 30, 2023
Violation history (3)
Imported violation history for Bellevue Waterworks| Rule | Status | Period |
|---|
| Revised Total Coliform Rule | Resolved | Nov 1, 2021 to Nov 30, 2021 |
| Total Haloacetic Acids (HAA5) | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| TTHM | Resolved | Oct 1, 2021 to Dec 31, 2021 |
Allouez Waterworks
WI4050455 · Surface water · 13,923 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
No active health-based record in this imported snapshot
Find this utility’s official report →Measurements (1)
An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.
Lead (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- Action level
39% of the listed benchmark
Monitoring period: Jun 1, 2023 to Sep 30, 2023
Violation history (2)
Imported violation history for Allouez Waterworks| Rule | Status | Period |
|---|
| Public Notice | Resolved | Oct 17, 2024 to Jun 30, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Resolved | Oct 17, 2024 to Dec 13, 2024 |