Pewaukee Water Quality
Wisconsin
The tap water in Pewaukee, Wisconsin is served by 10 EPA-regulated water systems covering approximately 17,799 people. 114 health-based violations are on record, most recently for 4000 in 2025. Data source: EPA Safe Drinking Water Information System.
Drinking water in Pewaukee, Wisconsin is delivered through 10 EPA-regulated community water systems serving an estimated 17,799 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
The SDWIS record for Pewaukee shows 114 total violations across all 10 systems, of which 114 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 4000, 4010, 5200, 5000. 4 TRI-reporting industrial facilities are also located within the city limits.
A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Wisconsin drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| PEWAUKEE CITY WATER AND SEWER UTILITY | 8,671 | 53 | Health |
| PEWAUKEE VILLAGE WATERWORKS | 8,166 | 59 | Health |
| DELAFIELD SQUARE | 587 | 0 | Clean |
| LINCOLNSHIRE PLACE | 100 | 0 | Clean |
| APARTMENTS OF STONERIDGE | 75 | 1 | Health |
| EVERGREENS | 40 | 1 | Health |
| COUNTRY AIRE CONDOS 4821 | 40 | 0 | Clean |
| COUNTRY AIRE CONDOS 4835 | 40 | 0 | Clean |
| COUNTRY AIRE CONDOS 4887 | 40 | 0 | Clean |
| COUNTRY AIRE CONDOS 4875 | 40 | 0 | Clean |
Does this city have health-based water violations?
Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.
| Contaminant | Begin Date |
|---|---|
| 4000 | 2025-10-01 |
| 4010 | 2025-07-01 |
| 4000 | 2025-07-01 |
| 4010 | 2025-04-01 |
| 4000 | 2025-04-01 |
| 4000 | 2025-04-01 |
| 4000 | 2025-04-01 |
| 4000 | 2025-04-01 |
| 4010 | 2025-01-01 |
| 4000 | 2025-01-01 |
| 4000 | 2025-01-01 |
| 4000 | 2025-01-01 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 4010 | 2024-10-01 |
| 4010 | 2024-10-01 |
| 4000 | 2024-10-01 |
| 4000 | 2024-10-01 |
| 4000 | 2024-10-01 |
| 4010 | 2024-07-01 |
| 4010 | 2024-07-01 |
| 4010 | 2024-07-01 |
| 4010 | 2024-07-01 |
| 4000 | 2024-07-01 |
| 4000 | 2024-07-01 |
| 4000 | 2024-07-01 |
| 4000 | 2024-07-01 |
| 4000 | 2024-07-01 |
| 4000 | 2024-07-01 |
| 4000 | 2024-07-01 |
| 4000 | 2024-04-01 |
| 4000 | 2024-04-01 |
| 4000 | 2024-04-01 |
| 4000 | 2024-04-01 |
| 4000 | 2024-04-01 |
| 4000 | 2024-04-01 |
| 4000 | 2024-01-01 |
| 4000 | 2024-01-01 |
| 4000 | 2024-01-01 |
| 4000 | 2024-01-01 |
| 4000 | 2024-01-01 |
| 4000 | 2023-10-01 |
| 4000 | 2023-10-01 |
| 4000 | 2023-10-01 |
| 4000 | 2023-10-01 |
| 4000 | 2023-10-01 |
| 4000 | 2023-10-01 |
| 4000 | 2023-10-01 |
| 4000 | 2023-07-01 |
| 4000 | 2023-07-01 |
TRI Facilities in Pewaukee
| Facility | Total Releases |
|---|---|
| Quad/graphics Marketing LLC | 87.2K lbs |
| Northern Stainless Corp | 22.5K lbs |
| Prime Leather Finishes Co | 2.3K lbs |
| Cooper Power Systems LLC | 1.7K lbs |
Frequently Asked Questions
Is Pewaukee, Wisconsin water safe to drink? ▼
How many water violations does Pewaukee have? ▼
What contaminants were found in Pewaukee water? ▼
How many water systems serve Pewaukee? ▼
Where does Pewaukee get its drinking water? ▼
Are there pollution sources near Pewaukee? ▼
About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.
A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.