No health-based violations on EPA record since 2016.
Serves about 5,192 people (3,169 connections) with groundwater from its own wells.
From EPA's record for MO3010720. PurityMap is independent of St Robert PWS.
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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 May 2024 to December 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 12 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| 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 | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| 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 | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| 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 | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| 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 | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| 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 | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| 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 | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| 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 | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-13 to 2024-12-04 | UCMR5 Analytical Results: ST ROBERT PWS (MO3010720) |
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 →St Robert PWS's phone number on EPA record is 573-451-2000. Its mailing address is 194 EASTLAWN AVE STE A, ST ROBERT, MO 65584-0000.
According to EPA's record, St Robert PWS uses groundwater from its own wells.
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 St Robert PWS's latest lead and copper round, which ended in December 2024. The federal action level is 15 µg/L.
PurityMap has no verified website for St Robert PWS. Its phone number on EPA record is 573-451-2000. Its mailing address on EPA record is 194 EASTLAWN AVE STE A, ST ROBERT, MO 65584-0000. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.