No health-based violations on EPA record since 2016.
Serves about 3,500 people (1,675 connections) with groundwater from its own wells.
From EPA's record for MO6024211. PurityMap is independent of Franklin 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 February 2025 to August 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 | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| 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 | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| 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 | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| 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 | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| 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 | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| 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 | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| 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 | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-12 | UCMR5 Analytical Results: FRANKLIN COUNTY PWSD 1 (MO6024211) |
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 →Franklin County PWSD 1's phone number on EPA record is 636-239-2808. Its mailing address is 3021 HWY A SUITE 101, WASHINGTON, MO 63090-0000.
According to EPA's record, Franklin County PWSD 1 uses groundwater from its own wells.
No health-based violations on EPA record since 2016. EPA also lists 2 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Franklin County PWSD 1's latest lead and copper round, which ended in December 2025, was 4.13 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Franklin County PWSD 1. Its phone number on EPA record is 636-239-2808. Its mailing address on EPA record is 3021 HWY A SUITE 101, WASHINGTON, MO 63090-0000. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.