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.
Delafield Square
WI2685812 · Groundwater · 587 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
8% of the listed benchmark
Monitoring period: Jun 1, 2025 to Sep 30, 2025
Violation history (0)
No record returned in this imported window. This is not a guarantee of tap-water safety.
Nashotah House
WI2682512 · Groundwater · 350 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
76% of the listed benchmark
Monitoring period: Jun 1, 2024 to Sep 30, 2024
Violation history (1)
Imported violation history for Nashotah House| Rule | Status | Period |
|---|
| Lead and Copper Rule | Resolved | Jan 1, 2025 to Jan 2, 2025 |
St Johns Northwestern Academies
WI2680761 · Groundwater · 340 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
59% of the listed benchmark
Monitoring period: Jun 1, 2024 to Sep 30, 2024
Violation history (11)
Imported violation history for St Johns Northwestern Academies| Rule | Status | Period |
|---|
| Public Notice | Unaddressed | Oct 17, 2024 |
| Public Notice | Unaddressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONS | Resolved | Oct 17, 2024 to Mar 6, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Resolved | Oct 17, 2024 to Mar 6, 2025 |
| Chlorine | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Revised Total Coliform Rule | Resolved | Mar 1, 2022 to Mar 31, 2022 |
| Lead and Copper Rule | Resolved | Jan 1, 2022 to Feb 25, 2022 |
| Revised Total Coliform Rule | Resolved | Jan 1, 2022 to Jan 31, 2022 |
| Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-based | Resolved | Dec 2, 2021 to Feb 18, 2022 |
| Revised Total Coliform Rule | Resolved | Dec 1, 2021 to Dec 31, 2021 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2021 to Nov 30, 2021 |
Delafield Waterworks
WI2684642 · Groundwater · 300 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
12% 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.
Arbors
WI2682795 · Groundwater · 280 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
1% of the listed benchmark
Monitoring period: Jun 1, 2024 to Sep 30, 2024
Violation history (4)
Imported violation history for Arbors| Rule | Status | Period |
|---|
| LEAD AND COPPER RULE REVISIONS | Resolved | Oct 17, 2024 to Dec 9, 2024 |
| Public Notice | Unaddressed | Oct 17, 2024 |
| Public Notice | Unaddressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Resolved | Oct 17, 2024 to Dec 9, 2024 |
Lake Country Apartments
WI2682229 · Groundwater · 84 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
0% of the listed benchmark
Monitoring period: Jun 1, 2024 to Sep 30, 2024
Violation history (2)
Imported violation history for Lake Country Apartments| Rule | Status | Period |
|---|
| LEAD AND COPPER RULE REVISIONS | Resolved | Oct 17, 2024 to Oct 29, 2024 |
| Public Notice | Unaddressed | Oct 17, 2024 |
Apartments Of Stoneridge
WI2682761 · Groundwater · 75 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
0% of the listed benchmark
Monitoring period: Jun 1, 2024 to Sep 30, 2024
Violation history (4)
Imported violation history for Apartments Of Stoneridge| Rule | Status | Period |
|---|
| LEAD AND COPPER RULE REVISIONS | Resolved | Oct 17, 2024 to Oct 24, 2024 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Resolved | Oct 17, 2024 to Oct 24, 2024 |
| Public Notice | Unaddressed | Oct 17, 2024 |
| Public Notice | Unaddressed | Oct 17, 2024 |
Knollcrest
WI2681104 · Groundwater · 66 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
91% of the listed benchmark
Monitoring period: Jun 1, 2023 to Sep 30, 2023
Di(2-ethylhexyl) phthalate
EPA SDWIS reported health-based violation
- Reported level
- Maximum contaminant level
182500% of the listed benchmark
Monitoring period: Aug 1, 2021 to Aug 31, 2021
Violation history (2)
Imported violation history for Knollcrest| Rule | Status | Period |
|---|
| Di(2-ethylhexyl) phthalateHealth-based | Resolved | Aug 1, 2021 to Aug 31, 2021 |
| Lead and Copper Rule | Resolved | Jan 1, 2021 to Mar 1, 2021 |
Cambridge Place Of Delafield
WI2686325 · Groundwater · 50 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
1% of the listed benchmark
Monitoring period: Jun 1, 2025 to Sep 30, 2025
Violation history (4)
Imported violation history for Cambridge Place Of Delafield| Rule | Status | Period |
|---|
| LEAD AND COPPER RULE REVISIONSHealth-based | Resolved | Oct 17, 2024 to Jun 6, 2025 |
| Public Notice | Unaddressed | Oct 17, 2024 |
| Public Notice | Unaddressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONS | Resolved | Oct 17, 2024 to Jun 6, 2025 |
Delafield Lakes 402
WI2686101 · Groundwater · 40 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
21% of the listed benchmark
Monitoring period: Jun 1, 2024 to Sep 30, 2024
Violation history (3)
Imported violation history for Delafield Lakes 402| Rule | Status | Period |
|---|
| Di(2-ethylhexyl) phthalate | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Di(2-ethylhexyl) phthalate | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Lead and Copper Rule | Resolved | Jun 1, 2021 to Sep 22, 2022 |