1 open health-based violation on EPA record.
Serves about 2,578 people (930 connections) with surface water from its own intake.
From EPA's record for OK1021678. PurityMap is independent of Mayes Co RWD # 9.
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2 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 | – | – | Addressed |
| From June 2022 | Interim Enhanced Surface Water Treatment Rule | – | – | Resolved |
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 →Mayes Co RWD # 9's phone number on EPA record is 918-434-5000. Its mailing address is Ken Storch, Chairperson, P.O. Box 1297, LOCUST GROVE, OK 74352.
According to EPA's record, Mayes Co RWD # 9 uses surface water from its own intake.
EPA's record shows 2 health-based violations for Mayes Co RWD # 9 in the 10 years to July 9, 2026. EPA's record lists 1 open health-based violation. EPA also lists 42 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Mayes Co RWD # 9's latest lead and copper round, which ended in June 2026, was 2 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Mayes Co RWD # 9. Its phone number on EPA record is 918-434-5000. Its mailing address on EPA record is Ken Storch, Chairperson, P.O. Box 1297, LOCUST GROVE, OK 74352. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.