Waukesha Water Quality
Wisconsin
According to EPA SDWIS, Waukesha, Wisconsin is served by 6 community water systems covering about 1,622 people. The same extract lists 4 health-based violation records, most recently coded 5200 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Waukesha, Wisconsin is delivered through 6 EPA-regulated community water systems serving an estimated 1,622 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 4 violation records across the 6 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 3 distinct EPA contaminant codes: LEAD AND COPPER RULE REVISIONS, Revised Total Coliform Rule, Lead and Copper Rule. 25 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 |
|---|---|---|---|
| LAKE MEADOWS WATER TRUST | 750 | 0 | Clean |
| LAKE DRIVE WATER TRUST | 500 | 1 | Health |
| PINES SUBDIVISION | 200 | 2 | Health |
| SCHOENSTATT SISTERS OF MARY | 80 | 1 | Health |
| DOUGLAS PLAZA SOUTH | 62 | 0 | Clean |
| DOUGLAS PLAZA NORTH | 30 | 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 |
|---|---|---|
| PINES SUBDIVISION | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| LAKE DRIVE WATER TRUST | Revised Total Coliform Rule | 2019-10-01 |
| PINES SUBDIVISION | Lead and Copper Rule | 2000-07-01 |
| SCHOENSTATT SISTERS OF MARY | Lead and Copper Rule | 1997-07-01 |
What are Waukesha's health-based records for?
Waukesha's health-based violation records carry 3 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 |
|---|---|---|
| Lead and Copper Rule | 2 | 2 |
| Lead and Copper Rule Revisions | 1 | 1 |
| Revised Total Coliform Rule | 1 | 1 |
TRI Facilities in Waukesha
| Facility | Total Releases |
|---|---|
| Metaltek International-Wisco Nsin Centrifugal Div | 549.8K lbs |
| The Gund Co | 195.3K lbs |
| Profile Finishing Systems Inc. | 104.3K lbs |
| Holcim Solutions & Products (us) LLC | 52.5K lbs |
| Valmet Inc. - Waukesha Service Center | 40.2K lbs |
| Waukesha Foundry Inc | 25.6K lbs |
| Castalloy Inc. | 18.9K lbs |
| Southern Graphic Systems LLC | 12.2K lbs |
| Accurate Specialties Inc | 8.7K lbs |
| Safety-Kleen Systems Waukesha (wau) | 6.6K lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Waukesha, Wisconsin? ▼
How many water violations does Waukesha have in this EPA extract? ▼
What contaminants were found in Waukesha water? ▼
How many water systems serve Waukesha? ▼
Where does Waukesha get its drinking water? ▼
Are there pollution sources near Waukesha? ▼
How does Waukesha compare in Wisconsin?
Of the 492 Wisconsin places with at least one community water system on file, Waukesha ranks #17 by number of systems (6).
Either side of it: Marshfield (6), Oconomowoc (6), Baraboo (5), Burlington (5)
About This Data
Figures here are the current EPA SDWIS extract joined to the 6 community water systems whose service area lists Waukesha, 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.