No health-based violations on EPA record since 2016.
Serves about 8,056 people (2,983 connections) with groundwater from its own wells.
From EPA's record for WI1140131. PurityMap is independent of Waupun Utilities.
Are you this utility? Correct this listing →
No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from April 2025 to October 2025.
| 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 | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| 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 | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| 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 | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| 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 | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| 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 | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| 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 | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| 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 | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-21 to 2025-10-20 | UCMR5 Analytical Results: WAUPUN UTILITIES (WI1140131) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure
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.
Get PurityMap updates about this water system.
Follow this water →According to EPA's record, Waupun Utilities uses groundwater from its own wells.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Waupun Utilities's latest lead and copper round, which ended in September 2023, was 1.2 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Waupun Utilities. Its mailing address on EPA record is 201 E MAIN ST, WAUPUN, WI 53963. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.