Public water system · OK1021501
ActiveLenapah Public Works Authority
At a glance
Lenapah Public Works Authority (PWSID OK1021501) is an active community water system in Nowata County, Oklahoma. It reports serving 298 people through 145 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, 7 are health-based, and the most recent began in September 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
298
Service connections
145
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Lenapah Public Works Authority compare with other water systems in Nowata County?
By EPA's size categories, Lenapah Public Works Authority is a very small system (500 people or fewer). Nowata County has 12 active public water systems. Its population served is about 65% below the county average of 850 people per system, and accounts for 2.9% of the 10,195 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 Lenapah Public Works Authority 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 Lenapah Public Works Authority?
EPA lists Lenapah Public Works Authority 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 12 active systems in Nowata County (100%) are also owned by a local government.
Does Lenapah Public Works Authority have drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in September 2023. The violations listed here began between August 2019 and September 2023. By type: 6 contaminant level above the legal limit, 5 monitoring and reporting and 1 required treatment not met. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (7 of them). EPA lists 12 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2023-09-29 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2023-07-01 | 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 |
| 2023-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2022-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2020-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2020-02-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2020-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2019-12-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2019-10-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2019-08-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2019-08-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | 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.
Lenapah Public Works Authority: frequently asked questions
Who runs Lenapah Public Works Authority?
Lenapah Public Works Authority (PWSID OK1021501) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Lenapah Public Works Authority serve?
Lenapah Public Works Authority reports serving 298 people through 145 service connections in Nowata County, Oklahoma.
Where does Lenapah Public Works Authority 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 Lenapah Public Works Authority have any drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in September 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 Lenapah Public Works Authority'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, 7 are health-based, and the most recent began in September 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 Lenapah Public Works Authority's water quality report?
As a community water system, Lenapah Public Works Authority 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 Nowata County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Nowata Municipal Authority | Nowata | 3,971 | Community | Surface water |
| Consolidated Rwd #1 Nowata and Rogers Co | Nowata | 1,580 | Community | Purchased surface water |
| Nowata Co Rwd #7 | Nowata | 1,050 | Community | Purchased surface water |
| South Coffeyville | Nowata | 790 | Community | Purchased surface water |
| Elm Bend Rwd Inc. | Nowata | 600 | Community | Purchased surface water |
| Nowata Co Rw & S Dist #1 | Nowata | 500 | 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, “Lenapah Public Works Authority, PWSID OK1021501, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/lenapah-public-works-authority-ok1021501 (data as of October 1, 2026).