No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting April 2023.
Serves about 150 people (97 connections) with surface water from its own intake, and buys water from Stillwater Utilities Authority and 51 East Water.
From EPA's record for OK1021221. PurityMap is independent of Lone Chimney Water Association.
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51 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Apr–Jun 2023 | Total trihalomethanes (TTHM) | 0.081 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2023 | Total trihalomethanes (TTHM) | 0.082 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2022 | Total trihalomethanes (TTHM) | 0.088 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2022 | Total trihalomethanes (TTHM) | 0.107 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2022 | Haloacetic acids (HAA5) | 0.063 mg/L | 0.060 mg/L | Resolved |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Oct–Dec 2021 | Total trihalomethanes (TTHM) | 0.111 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2021 | Total trihalomethanes (TTHM) | 0.087 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2021 | Haloacetic acids (HAA5) | 0.066 mg/L | 0.060 mg/L | Archived |
| Jul–Sep 2021 | Total trihalomethanes (TTHM) | 0.134 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2021 | Total trihalomethanes (TTHM) | 0.099 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2021 | Haloacetic acids (HAA5) | 0.074 mg/L | 0.060 mg/L | Resolved |
| Apr–Jun 2021 | Total trihalomethanes (TTHM) | 0.1 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2021 | Total trihalomethanes (TTHM) | 0.132 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2021 | Haloacetic acids (HAA5) | 0.066 mg/L | 0.060 mg/L | Archived |
| Jan–Mar 2021 | Total trihalomethanes (TTHM) | 0.116 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2021 | Total trihalomethanes (TTHM) | 0.153 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2021 | Haloacetic acids (HAA5) | 0.076 mg/L | 0.060 mg/L | Resolved |
| Oct–Dec 2020 | Total trihalomethanes (TTHM) | 0.156 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2020 | Total trihalomethanes (TTHM) | 0.124 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2020 | Haloacetic acids (HAA5) | 0.064 mg/L | 0.060 mg/L | Resolved |
| Oct–Dec 2020 | Haloacetic acids (HAA5) | 0.08 mg/L | 0.060 mg/L | Resolved |
| Jul–Sep 2020 | Total trihalomethanes (TTHM) | 0.149 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2020 | Total trihalomethanes (TTHM) | 0.127 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2020 | Haloacetic acids (HAA5) | 0.071 mg/L | 0.060 mg/L | Resolved |
| Jul–Sep 2020 | Haloacetic acids (HAA5) | 0.084 mg/L | 0.060 mg/L | 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.
Get PurityMap updates about this water system.
Follow this water →Lone Chimney Water Association's phone number on EPA record is 918-762-3581. Its mailing address is Ronnie Mallory, Chairperson, 346400 E. 52ND RD., GLENCOE, OK 74032.
According to EPA's record, Lone Chimney Water Association uses surface water from its own intake, and buys water from Stillwater Utilities Authority and 51 East Water.
EPA's record shows 51 health-based violations for Lone Chimney Water Association 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 April 2023. EPA also lists 1 missed or late test or report in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Lone Chimney Water Association's latest lead and copper round, which ended in December 2025, was 3.8 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Lone Chimney Water Association. Its phone number on EPA record is 918-762-3581. Its mailing address on EPA record is Ronnie Mallory, Chairperson, 346400 E. 52ND RD., GLENCOE, OK 74032. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.