No open health-based violations on EPA record in the last 10 years.
Serves about 4,020 people (1,924 connections) with groundwater from its own wells.
From EPA's record for OK2005501. PurityMap is independent of Nichols Hills.
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1 health-based violation 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 |
EPA required this system to test for 30 unregulated and emerging contaminants, from May 2024 to September 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 16 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 | 2024-05-22 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| 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 | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| 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 | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| 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 | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| 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 | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| 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 | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-22 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-22 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| 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 | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-22 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-22 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-08 to 2025-09-09 | UCMR5 Analytical Results: NICHOLS HILLS (OK2005501) |
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 →Nichols Hills's phone number on EPA record is 405-843-5222. Its mailing address is David White, 1009 N.W. 75TH, NICHOLS HILLS, OK 73116-6431.
According to EPA's record, Nichols Hills uses groundwater from its own wells.
EPA's record shows 1 health-based violation for Nichols Hills in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 69 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 Nichols Hills'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 Nichols Hills. Its phone number on EPA record is 405-843-5222. Its mailing address on EPA record is David White, 1009 N.W. 75TH, NICHOLS HILLS, OK 73116-6431. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.