No open health-based violations on EPA record in the last 10 years.
Serves about 4,006 people (1,483 connections) with groundwater from its own wells.
From EPA's record for WI1570100. PurityMap is independent of Prairie Du Sac Waterworks.
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1 health-based violation 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 |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2024 to July 2024.
| 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 | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| 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 | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| 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 | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| 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 | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| 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 | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| 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 | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| 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 | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-07-24 | UCMR5 Analytical Results: PRAIRIE DU SAC WATERWORKS (WI1570100) |
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.
Get PurityMap updates about this water system.
Follow this water →According to EPA's record, Prairie Du Sac Waterworks uses groundwater from its own wells.
EPA's record shows 1 health-based violation for Prairie Du Sac Waterworks in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 3 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Prairie Du Sac Waterworks's latest lead and copper round, which ended in September 2023, was 1.4 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Prairie Du Sac Waterworks. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.