No health-based violations on EPA record since 2016.
Serves about 3,200 people (1,525 connections) with surface water bought from Rathbun Regional Water Assn (Rathbun), Putnam County PWSD 1 and Princeton PWS.
From EPA's record for MO2024382. PurityMap is independent of Mercer County PWSD 1.
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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 January 2024 to November 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 9.6 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2024-01-24 to 2024-10-10 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluorobutanoic acid (PFBA) | 13 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| 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 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-24 to 2024-11-06 | UCMR5 Analytical Results: MERCER COUNTY PWSD 1 (MO2024382) |
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 →Mercer County PWSD 1's phone number on EPA record is 660-382-4776. Its mailing address is 22920 HIGHWAY M, MERCER, MO 64661-0000.
According to EPA's record, Mercer County PWSD 1 uses surface water bought from Rathbun Regional Water Assn (Rathbun), Putnam County PWSD 1 and Princeton PWS.
No health-based violations on EPA record since 2016. EPA also lists 6 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 Mercer County PWSD 1's latest lead and copper round, which ended in December 2023. The federal action level is 15 µg/L.
PurityMap has no verified website for Mercer County PWSD 1. Its phone number on EPA record is 660-382-4776. Its mailing address on EPA record is 22920 HIGHWAY M, MERCER, MO 64661-0000. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.