Public water system · KS2012105
ActiveOsawatomie, City of
At a glance
City of Osawatomie (PWSID KS2012105) is an active community water system in Miami County, Kansas. It reports serving 4,280 people through 1,665 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 November 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,280
Service connections
1,665
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does City of Osawatomie compare with other water systems in Miami County?
By EPA's size categories, City of Osawatomie is a medium system (3,301 to 10,000 people). Miami County has 8 active public water systems, and City of Osawatomie is the 4th-largest of them by population served. Its population served is about 18% above the county average of 3,630 people per system, and accounts for 15% of the 29,041 people reported by systems filed under the county. Across Kansas, the 1,041 active systems average 2,800 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Osawatomie is about 36% 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. Kansas has 863 active community water systems, 83% of the state's 1,041 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 75 Kansas systems (7.2%) list surface water as their primary source.
Who owns and regulates City of Osawatomie?
EPA lists City of Osawatomie as owned by a local government. The KS state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 8 of the 8 active systems in Miami County (100%) are also owned by a local government.
Does City of Osawatomie have drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in November 2024. The violations listed here began between January 2021 and November 2024. By type: 4 required treatment not met, 4 contaminant level above the legal limit, 2 public notice, recordkeeping or other and 2 monitoring and reporting. The contaminant or rule involved most often is Interim Enhanced Surface Water Treatment Rule (3 of them). EPA lists 10 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-11-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2024-11-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2024-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2024-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2024-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2022-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2022-08-12 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2022-08-12 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2021-04-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2021-03-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2021-03-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2021-01-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | 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.
City of Osawatomie: frequently asked questions
Who runs City of Osawatomie?
City of Osawatomie (PWSID KS2012105) is a community water system owned by a local government. It is regulated by the KS state drinking water program.
How many people does City of Osawatomie serve?
City of Osawatomie reports serving 4,280 people through 1,665 service connections in Miami County, Kansas.
Where does City of Osawatomie 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 City of Osawatomie 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 November 2024. 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 City of Osawatomie'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 November 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the KS state drinking water program.
Where can I find City of Osawatomie's water quality report?
As a community water system, City of Osawatomie 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 Miami County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Miami Co Rwd 2 | Miami | 10,311 | Community | Surface water |
| Paola, City of | Miami | 5,786 | Community | Purchased surface water |
| Louisburg, City of | Miami | 4,994 | Community | Purchased surface water |
| Miami Co Rwd 3 | Miami | 2,435 | Community | Purchased surface water |
| Miami Co Rwd 4 | Miami | 1,018 | Community | Purchased surface water |
| Fontana, City of | Miami | 216 | 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, “Osawatomie, City of, PWSID KS2012105, Kansas”, https://aquacensus.com/water-systems/kansas/osawatomie-city-of-ks2012105 (data as of October 1, 2026).