No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting October 2024.
Serves about 5,833 people (1,930 connections) with surface water bought from Decatur.
From EPA's record for IL1150350. PurityMap is independent of Mount Zion.
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8 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Oct–Dec 2024 | Total trihalomethanes (TTHM) | 0.082 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2024 | Total trihalomethanes (TTHM) | 0.085 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2024 | Total trihalomethanes (TTHM) | 0.083 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2024 | Total trihalomethanes (TTHM) | 0.083 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2022 | Total trihalomethanes (TTHM) | 0.087 mg/L | 0.080 mg/L | Resolved |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jan–Mar 2022 | Total trihalomethanes (TTHM) | 0.085 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2021 | Total trihalomethanes (TTHM) | 0.091 mg/L | 0.080 mg/L | Resolved |
| From June 2021 | Lead and Copper Rule | – | TT | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2024 to October 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluoropentanoic acid (PFPeA) | 3.4 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| 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 | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| 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 | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| 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 | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| 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 | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| 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 | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| 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 | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| 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 | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-10-08 | UCMR5 Analytical Results: MOUNT ZION (IL1150350) |
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 →Mount Zion's phone number on EPA record is 217-864-5424. Its mailing address is 1400 MOUNT ZION PARKWAY, MOUNT ZION, IL 62549.
According to EPA's record, Mount Zion uses surface water bought from Decatur.
EPA's record shows 8 health-based violations for Mount Zion 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 October 2024. 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 Mount Zion's latest lead and copper round, which ended in December 2025, was 1.5 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Mount Zion. Its phone number on EPA record is 217-864-5424. Its mailing address on EPA record is 1400 MOUNT ZION PARKWAY, MOUNT ZION, IL 62549. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.