No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting January 2024.
Serves about 7,542 people (2,951 connections) with surface water bought from Oklahoma City Utilities.
From EPA's record for OK2000909. PurityMap is independent of Piedmont Municipal Authority.
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4 health-based violations 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 |
| From January 2024 | Gross alpha particles | 18 pCi/L | 15 pCi/L | Resolved |
| From October 2023 | Gross alpha particles | 16 pCi/L | 15 pCi/L | Resolved |
| From July 2023 | Gross alpha particles | 21 pCi/L | 15 pCi/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2023 to October 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 49.7 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 | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluorohexanoic acid (PFHxA) | 3.3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluorobutanoic acid (PFBA) | 5.9 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluoropentanoic acid (PFPeA) | 3.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| 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 | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| 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 | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| 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 | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| 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 | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| 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 | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| 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 | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-11 to 2023-10-04 | UCMR5 Analytical Results: PIEDMONT MUNICIPAL AUTHORITY (OK2000909) |
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 →Piedmont Municipal Authority's phone number on EPA record is 405-373-2000. Its mailing address is Kurt Mayabb, Mayor, P.O. Box 240, PIEDMONT, OK 73078.
According to EPA's record, Piedmont Municipal Authority uses surface water bought from Oklahoma City Utilities.
EPA's record shows 4 health-based violations for Piedmont Municipal Authority 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 2024. EPA also lists 37 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 Piedmont Municipal Authority'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 Piedmont Municipal Authority. Its phone number on EPA record is 405-373-2000. Its mailing address on EPA record is Kurt Mayabb, Mayor, P.O. Box 240, PIEDMONT, OK 73078. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.