Public water system · OK1021221
ActiveLone Chimney Water Association
At a glance
Lone Chimney Water Association (PWSID OK1021221) is an active community water system in Pawnee County, Oklahoma. It reports serving 150 people through 97 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in April 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
150
Service connections
97
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Lone Chimney Water Association compare with other water systems in Pawnee County?
By EPA's size categories, Lone Chimney Water Association is a very small system (500 people or fewer). Pawnee County has 14 active public water systems. Its population served is well below the county average of 966 people per system, and accounts for 1.1% of the 13,527 people reported by systems filed under the county. Across Oklahoma, the 1,254 active systems average 2,907 people each. Nationally, the average active community water system reports serving 6,703 people, so Lone Chimney Water Association is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Oklahoma has 864 active community water systems, 69% of the state's 1,254 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 175 Oklahoma systems (14%) list surface water as their primary source.
Who owns and regulates Lone Chimney Water Association?
EPA lists Lone Chimney Water Association as owned by a local government. The OK state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 12 of the 14 active systems in Pawnee County (86%) are also owned by a local government.
Does Lone Chimney Water Association have drinking water violations?
Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in April 2023. The violations listed here began between April 2021 and April 2023. By type: 12 contaminant level above the legal limit. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (9 of them). EPA lists 11 as resolved and 1 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2023-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2023-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2022-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2022-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2022-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2021-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2021-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2021-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2021-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2021-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2021-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2021-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Lone Chimney Water Association: frequently asked questions
Who runs Lone Chimney Water Association?
Lone Chimney Water Association (PWSID OK1021221) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Lone Chimney Water Association serve?
Lone Chimney Water Association reports serving 150 people through 97 service connections in Pawnee County, Oklahoma.
Where does Lone Chimney Water Association get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Lone Chimney Water Association have any drinking water violations?
Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in April 2023. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Lone Chimney Water Association's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in April 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the OK state drinking water program.
Where can I find Lone Chimney Water Association's water quality report?
As a community water system, Lone Chimney Water Association must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Pawnee County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Cleveland Municipal Authority | Pawnee | 3,262 | Community | Surface water |
| Pawnee Co Rwd #1 | Pawnee | 3,200 | Community | Groundwater |
| Pawnee | Pawnee | 2,230 | Community | Surface water |
| Pawnee Co Rwd #2 | Pawnee | 1,775 | Community | Purchased surface water |
| Pawnee Co Rwd #3 | Pawnee | 685 | Community | Purchased surface water |
| Pawnee Co Rwd #4 | Pawnee | 415 | Community | Purchased surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Lone Chimney Water Association, PWSID OK1021221, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/lone-chimney-water-association-ok1021221 (data as of October 1, 2026).