No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting January 2018.
Serves about 26,084 people (9,660 connections) with surface water from its own intake.
From EPA's record for WI8160147. PurityMap is independent of Superior Water Light & Power Company.
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2 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From October 2024 | Lead and copper rule revisions | – | – | Resolved |
| Jan–Mar 2018 | Total trihalomethanes (TTHM) | 80.9 µg/L | 0.080 mg/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2023 to December 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-06 | UCMR5 Analytical Results: SUPERIOR WATER LIGHT & POWER COMPANY (WI8160147) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
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Follow this water →According to EPA's record, Superior Water Light & Power Company uses surface water from its own intake.
EPA's record shows 2 health-based violations for Superior Water Light & Power Company in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting January 2018. EPA also lists 1 missed or late test or report in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Superior Water Light & Power Company's latest lead and copper round, which ended in September 2023, was 5.6 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Superior Water Light & Power Company. Its mailing address on EPA record is PO BOX 519, 1813 E 3RD STREET, SUPERIOR, WI 54880. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.