No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting January 2020.
Serves about 4,500 people (2,063 connections) with surface water from its own intake.
From EPA's record for MO5010446. PurityMap is independent of Lamar PWS.
Are you this utility? Correct this listing →
14 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jan–Mar 2020 | Total trihalomethanes (TTHM) | 106 µg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2019 | Haloacetic acids (HAA5) | 64 µg/L | 0.060 mg/L | Resolved |
| Oct–Dec 2019 | Total trihalomethanes (TTHM) | 114 µg/L | 0.080 mg/L | Resolved |
| From July 2019 | Carbon, total | – | TT | Resolved |
| Jul–Sep 2019 | Total trihalomethanes (TTHM) | 119 µg/L | 0.080 mg/L | Resolved |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From April 2019 | Carbon, total | – | TT | Resolved |
| Apr–Jun 2019 | Total trihalomethanes (TTHM) | 106 µg/L | 0.080 mg/L | Resolved |
| From January 2019 | Carbon, total | – | TT | Resolved |
| Jan–Mar 2019 | Total trihalomethanes (TTHM) | 84 µg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2018 | Total trihalomethanes (TTHM) | 84.4 µg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2018 | Total trihalomethanes (TTHM) | 83.2 µg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2017 | Total trihalomethanes (TTHM) | 81 µg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2017 | Total trihalomethanes (TTHM) | 84 µg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2016 | Total trihalomethanes (TTHM) | 91 µg/L | 0.080 mg/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2024 to November 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 6.2 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Lithium | 11 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 | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| 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 | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| 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 | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| 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 | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| 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 | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| 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 | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| 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 | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-18 | UCMR5 Analytical Results: LAMAR PWS (MO5010446) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure
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 →Lamar PWS's phone number on EPA record is 417-682-5554. Its mailing address is 132 W 10TH ST, LAMAR, MO 64759-0000.
According to EPA's record, Lamar PWS uses surface water from its own intake.
EPA's record shows 14 health-based violations for Lamar PWS 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 January 2020. EPA also lists 6 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Lamar PWS's latest lead and copper round, which ended in December 2025, was 1.57 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Lamar PWS. Its phone number on EPA record is 417-682-5554. Its mailing address on EPA record is 132 W 10TH ST, LAMAR, MO 64759-0000. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.