No open health-based violations on EPA record in the last 10 years.
Serves about 8,511 people (3,224 connections) with groundwater from its own wells.
From EPA's record for MS0450034. PurityMap is independent of CMU.
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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 March 2023 to September 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 23.9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| 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 | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| 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 | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| 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 | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| 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 | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| 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 | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| 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 | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2023-09-27 | UCMR5 Analytical Results: CMU - LAKE CAROLINE (MS0450034) |
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 →CMU's phone number on EPA record is 601-859-2474. Its mailing address is 225 N HARGON ST, CANTON, MS 39046.
According to EPA's record, CMU uses groundwater from its own wells.
EPA's record shows 1 health-based violation for CMU in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 5 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in CMU's latest lead and copper round, which ended in December 2024, was 1.2 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for CMU. Its phone number on EPA record is 601-859-2474. Its mailing address on EPA record is 225 N HARGON ST, CANTON, MS 39046. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.