Public water system · OK1020506
ActiveTecumseh Utility Authority
At a glance
Tecumseh Utility Authority (PWSID OK1020506) is an active community water system in Pottawatomie County, Oklahoma. It reports serving 6,098 people through 2,559 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, 8 are health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
6,098
Service connections
2,559
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Tecumseh Utility Authority compare with other water systems in Pottawatomie County?
By EPA's size categories, Tecumseh Utility Authority is a medium system (3,301 to 10,000 people). Pottawatomie County has 24 active public water systems, and Tecumseh Utility Authority is the 2nd-largest of them by population served. Its population served is about 3.1 times the county average of 1,949 people per system, and accounts for 13% of the 46,772 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 Tecumseh Utility Authority is roughly in line with 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 Tecumseh Utility Authority?
EPA lists Tecumseh Utility 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. 11 of the 24 active systems in Pottawatomie County (46%) are also owned by a local government.
Does Tecumseh Utility Authority have drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in December 2025. The violations listed here began between April 2025 and December 2025. By type: 8 contaminant level above the legal limit and 4 monitoring and reporting. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (7 of them). EPA lists 8 as archived and 4 as resolved. 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. 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 |
|---|---|---|---|---|
| 2025-12-30 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2025-12-30 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2025-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2025-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2025-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2025-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2025-09-29 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2025-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2025-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2025-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2025-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2025-04-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Haloacetic acids (HAA5)code 2456 | No | 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.
Tecumseh Utility Authority: frequently asked questions
Who runs Tecumseh Utility Authority?
Tecumseh Utility Authority (PWSID OK1020506) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Tecumseh Utility Authority serve?
Tecumseh Utility Authority reports serving 6,098 people through 2,559 service connections in Pottawatomie County, Oklahoma.
Where does Tecumseh Utility 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 Tecumseh Utility Authority have any drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in December 2025. 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 Tecumseh Utility 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, 8 are health-based, and the most recent began in December 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the OK state drinking water program.
Where can I find Tecumseh Utility Authority's water quality report?
As a community water system, Tecumseh Utility 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 Pottawatomie County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Shawnee Municipal Authority | Pottawatomie | 29,990 | Community | Surface water |
| Tri-County Rwd #2 | Pottawatomie | 5,172 | Community | Groundwater |
| Pottawatomie Co Development Auth | Pottawatomie | 1,200 | Community | Purchased surface water |
| Maud | Pottawatomie | 1,136 | Community | Groundwater |
| Pottawatomie County Rwd #3 | Pottawatomie | 560 | Community | Surface water |
| Wanette Public Works Authority | Pottawatomie | 402 | 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, “Tecumseh Utility Authority, PWSID OK1020506, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/tecumseh-utility-authority-ok1020506 (data as of October 1, 2026).