Superior Water Quality
Wisconsin
According to EPA SDWIS, Superior, Wisconsin is served by 2 community water systems covering about 26,179 people. The same extract lists 16 health-based violation records, most recently coded 5000 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Superior, Wisconsin is delivered through 2 EPA-regulated community water systems serving an estimated 26,179 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 16 violation records across the 2 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 6 distinct EPA contaminant codes: Lead and Copper Rule, Revised Total Coliform Rule, LEAD AND COPPER RULE REVISIONS, Stage 1 Disinfectants and Disinfection Byproducts Rule, Groundwater Rule and 1 others. 5 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 |
|---|---|---|---|
| SUPERIOR WATER LIGHT & POWER COMPANY | 26,084 | 3 | Health |
| MANITOU FALLS SANITARY DISTRICT NO 1 | 95 | 13 | Health |
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 |
|---|---|---|
| MANITOU FALLS SANITARY DISTRICT NO 1 | Lead and Copper Rule | 2025-03-26 |
| MANITOU FALLS SANITARY DISTRICT NO 1 | Revised Total Coliform Rule | 2025-02-10 |
| MANITOU FALLS SANITARY DISTRICT NO 1 | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SUPERIOR WATER LIGHT & POWER COMPANY | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| MANITOU FALLS SANITARY DISTRICT NO 1 | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2024-06-02 |
| MANITOU FALLS SANITARY DISTRICT NO 1 | Revised Total Coliform Rule | 2023-12-09 |
| MANITOU FALLS SANITARY DISTRICT NO 1 | Revised Total Coliform Rule | 2023-12-09 |
| MANITOU FALLS SANITARY DISTRICT NO 1 | Revised Total Coliform Rule | 2023-12-09 |
| MANITOU FALLS SANITARY DISTRICT NO 1 | Lead and Copper Rule | 2022-10-01 |
| MANITOU FALLS SANITARY DISTRICT NO 1 | Lead and Copper Rule | 2022-10-01 |
| MANITOU FALLS SANITARY DISTRICT NO 1 | Lead and Copper Rule | 2022-10-01 |
| MANITOU FALLS SANITARY DISTRICT NO 1 | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2021-06-02 |
| MANITOU FALLS SANITARY DISTRICT NO 1 | Groundwater Rule | 2018-01-01 |
| MANITOU FALLS SANITARY DISTRICT NO 1 | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2018-01-01 |
| SUPERIOR WATER LIGHT & POWER COMPANY | TTHM | 2018-01-01 |
| SUPERIOR WATER LIGHT & POWER COMPANY | Lead and Copper Rule | 1996-01-01 |
What are Superior's health-based records for?
Superior's health-based violation records carry 6 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 | 5 | 2 |
| Revised Total Coliform Rule | 4 | 1 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | 3 | 1 |
| Lead and Copper Rule Revisions | 2 | 2 |
| Groundwater Rule | 1 | 1 |
| Tthm | 1 | 1 |
TRI Facilities in Superior
| Facility | Total Releases |
|---|---|
| Charter Next Generation - Superior | 1.0M lbs |
| Graymont (wi) Inc. | 1.0M lbs |
| Superior Refining Co LLC | 422.2K lbs |
| Amsoil Inc-Amsoil Center | 5.9K lbs |
| Genesis Attachments LLC | 154 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Superior, Wisconsin? ▼
How many water violations does Superior have in this EPA extract? ▼
What contaminants were found in Superior water? ▼
How many water systems serve Superior? ▼
Where does Superior get its drinking water? ▼
Are there pollution sources near Superior? ▼
How does Superior compare in Wisconsin?
Of the 492 Wisconsin places with at least one community water system on file, Superior ranks #117 by number of systems (2).
Either side of it: Sheboygan Falls (2), Spring Green (2), Three Lakes (2), Two Rivers (2)
About This Data
Figures here are the current EPA SDWIS extract joined to the 2 community water systems whose service area lists Superior, 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.