Pewaukee Water Quality
Wisconsin
According to EPA SDWIS, Pewaukee, Wisconsin is served by 9 community water systems covering about 17,724 people. The same extract lists 117 health-based violation records, most recently coded 4010 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Pewaukee, Wisconsin is delivered through 9 EPA-regulated community water systems serving an estimated 17,724 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.
PlainEnviro's health-based SDWIS extract shows 117 violation records across the 9 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 4 distinct EPA contaminant codes: Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U, LEAD AND COPPER RULE REVISIONS, Lead and Copper Rule. 4 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. 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 | 55 | Health |
| PEWAUKEE VILLAGE WATERWORKS | 8,166 | 61 | Health |
| DELAFIELD SQUARE | 587 | 0 | Clean |
| LINCOLNSHIRE PLACE | 100 | 0 | Clean |
| 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?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| PEWAUKEE VILLAGE WATERWORKS | Combined Radium (-226 and -228) | 2025-10-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2025-10-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2025-10-01 |
| PEWAUKEE VILLAGE WATERWORKS | Combined Radium (-226 and -228) | 2025-07-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2025-07-01 |
| PEWAUKEE VILLAGE WATERWORKS | Combined Radium (-226 and -228) | 2025-04-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2025-04-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2025-04-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2025-04-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2025-04-01 |
| PEWAUKEE VILLAGE WATERWORKS | Combined Radium (-226 and -228) | 2025-01-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2025-01-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2025-01-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2025-01-01 |
| EVERGREENS | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| PEWAUKEE VILLAGE WATERWORKS | Combined Radium (-226 and -228) | 2024-10-01 |
| PEWAUKEE VILLAGE WATERWORKS | Combined Radium (-226 and -228) | 2024-10-01 |
| PEWAUKEE VILLAGE WATERWORKS | Combined Radium (-226 and -228) | 2024-10-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-10-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-10-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-10-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-10-01 |
| PEWAUKEE VILLAGE WATERWORKS | Combined Radium (-226 and -228) | 2024-07-01 |
| PEWAUKEE VILLAGE WATERWORKS | Combined Radium (-226 and -228) | 2024-07-01 |
| PEWAUKEE VILLAGE WATERWORKS | Combined Radium (-226 and -228) | 2024-07-01 |
| PEWAUKEE VILLAGE WATERWORKS | Combined Radium (-226 and -228) | 2024-07-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2024-07-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2024-07-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2024-07-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2024-07-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-07-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-07-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-07-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2024-04-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2024-04-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2024-04-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-04-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-04-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-04-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2024-01-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2024-01-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-01-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-01-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2024-01-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2023-10-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2023-10-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2023-10-01 |
| PEWAUKEE VILLAGE WATERWORKS | Gross Alpha, Excl. Radon and U | 2023-10-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2023-10-01 |
| PEWAUKEE CITY WATER AND SEWER UTILITY | Gross Alpha, Excl. Radon and U | 2023-10-01 |
What are Pewaukee's health-based records for?
Pewaukee's health-based violation records carry 4 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Gross Alpha, Excl. Radon and U | 76 | 2 |
| Combined Radium (-226 and -228) | 38 | 2 |
| Lead and Copper Rule | 2 | 1 |
| Lead and Copper Rule Revisions | 1 | 1 |
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
What does EPA SDWIS list for drinking water in Pewaukee, Wisconsin? ▼
How many water violations does Pewaukee have in this EPA extract? ▼
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? ▼
How does Pewaukee compare in Wisconsin?
Of the 492 Wisconsin places with at least one community water system on file, Pewaukee ranks #7 by number of systems (9).
Either side of it: Colfax (9), Delafield (9), Black River Falls (7), Kenosha (7)
About This Data
Figures here are the current EPA SDWIS extract joined to the 9 community water systems whose service area lists Pewaukee, ranked against the 492 Wisconsin places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
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.