Nitrate + Nitrite above the legal limit in the period starting October 2025; 1 open health-based violation on EPA record.
Serves about 600 people (366 connections) with groundwater from its own wells.
From EPA's record for OK2000904. PurityMap is independent of Calumet.
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3 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From October 2025 | Nitrate + Nitrite | 11 mg/L | – | Archived |
| From July 2025 | Nitrate + Nitrite | 11 mg/L | – | Archived |
| From October 2024 | Lead and copper rule revisions | – | – | Addressed |
No lab results for other contaminants (like PFAS) are on file for this system. EPA required that testing from systems serving more than 3,300 people, plus a sample of smaller ones.
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.
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Follow this water →Calumet's phone number on EPA record is 405-893-2323. Its mailing address is Laurie Morris, Mayor, P.O. BOX 190, CALUMET, OK 73014-0190.
According to EPA's record, Calumet uses groundwater from its own wells.
EPA's record shows 3 health-based violations for Calumet in the 10 years to July 9, 2026. Nitrate + Nitrite was above the legal limit in the period starting October 2025. EPA's record also shows 1 open health-based violation. EPA also lists 63 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Calumet's latest lead and copper round, which ended in December 2024, was 1.2 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Calumet. Its phone number on EPA record is 405-893-2323. Its mailing address on EPA record is Laurie Morris, Mayor, P.O. BOX 190, CALUMET, OK 73014-0190. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.