Public water system · KS2013102
ActiveSeneca, City of
At a glance
City of Seneca (PWSID KS2013102) is an active community water system in Nemaha County, Kansas. It reports serving 2,130 people through 1,364 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; 3 are health-based, and the most recent began in April 2003.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,130
Service connections
1,364
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does City of Seneca compare with other water systems in Nemaha County?
By EPA's size categories, City of Seneca is a small system (501 to 3,300 people). Nemaha County has 11 active public water systems, and City of Seneca is the 3rd-largest of them by population served. Its population served is about 144% above the county average of 875 people per system, and accounts for 22% of the 9,620 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 Seneca 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. 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 Seneca?
EPA lists City of Seneca 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. 11 of the 11 active systems in Nemaha County (100%) are also owned by a local government.
Does City of Seneca have drinking water violations?
EPA's records list 4 violations for this system; 3 are health-based, and the most recent began in April 2003. The violations listed here began between February 1978 and April 2003. By type: 2 required treatment not met, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2003-04-18 | Required treatment not metOCCT/SOWT Study/Recommendation · code 57 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 2002-12-23 | Required treatment not metPublic Education · code 65 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 2000-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1978-02-09 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Seleniumcode 1045 | Yes | Archived |
All 4 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 Seneca: frequently asked questions
Who runs City of Seneca?
City of Seneca (PWSID KS2013102) 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 Seneca serve?
City of Seneca reports serving 2,130 people through 1,364 service connections in Nemaha County, Kansas.
Where does City of Seneca 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 Seneca have any drinking water violations?
EPA's records list 4 violations for this system; 3 are health-based, and the most recent began in April 2003. 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 Seneca'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. EPA's records list 4 violations for this system; 3 are health-based, and the most recent began in April 2003. 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 Seneca's water quality report?
As a community water system, City of Seneca 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 Nemaha County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Nemaha Co Rwd 3 | Nemaha | 2,800 | Community | Groundwater |
| Sabetha, City of | Nemaha | 2,519 | Community | Surface water |
| Centralia, City of | Nemaha | 486 | Community | Purchased groundwater |
| Nemaha Co Rwd 4 | Nemaha | 448 | Community | Groundwater |
| Nemaha Co Rwd 1 | Nemaha | 350 | Community | Groundwater |
| Wetmore, City of | Nemaha | 348 | Community | Groundwater |
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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, “Seneca, City of, PWSID KS2013102, Kansas”, https://aquacensus.com/water-systems/kansas/seneca-city-of-ks2013102 (data as of October 1, 2026).