No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting April 2022.
Serves about 563 people (225 connections) with surface water bought from Olney.
From EPA's record for IL1595050. PurityMap is independent of West Liberty-Dundas Water District.
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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 |
|---|---|---|---|---|
| Apr–Jun 2022 | Total trihalomethanes (TTHM) | 0.089 mg/L | 0.080 mg/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2025 to September 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 | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| 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 | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| 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 | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| 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 | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| 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 | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| 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 | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| 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 | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-05 to 2025-09-09 | UCMR5 Analytical Results: WEST LIBERTY-DUNDAS WATER DISTRICT (IL1595050) |
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 →West Liberty-Dundas Water District's phone number on EPA record is 618-754-3576. Its mailing address is 4709 E DUNDAS LANE, PO BOX 62, DUNDAS, IL 62425.
According to EPA's record, West Liberty-Dundas Water District uses surface water bought from Olney.
EPA's record shows 1 health-based violation for West Liberty-Dundas Water District 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 April 2022. EPA also lists 2 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in West Liberty-Dundas Water District's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for West Liberty-Dundas Water District. Its phone number on EPA record is 618-754-3576. Its mailing address on EPA record is 4709 E DUNDAS LANE, PO BOX 62, DUNDAS, IL 62425. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.