Public water system · NE3102512
ActiveLouisville, City of
At a glance
City of Louisville (PWSID NE3102512) is an active community water system in Cass County, Nebraska. It reports serving 1,400 people through 623 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in July 2002.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,400
Service connections
623
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Louisville compare with other water systems in Cass County?
By EPA's size categories, City of Louisville is a small system (501 to 3,300 people). Cass County has 42 active public water systems, and City of Louisville is the 6th-largest of them by population served. Its population served is about twice the county average of 651 people per system, and accounts for 5.1% of the 27,326 people reported by systems filed under the county. Across Nebraska, the 1,226 active systems average 1,472 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Louisville 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. Nebraska has 599 active community water systems, 49% of the state's 1,226 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,095 Nebraska systems (89%) list groundwater as their primary source.
Who owns and regulates City of Louisville?
EPA lists City of Louisville as owned by a local government. The NE state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 19 of the 42 active systems in Cass County (45%) are also owned by a local government.
Does City of Louisville have drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in July 2002. The violations listed here began between January 1998 and July 2002. By type: 2 public notice, recordkeeping or other, 1 contaminant level above the legal limit and 1 required treatment not met. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2002-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2000-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2000-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1998-01-01 | Required treatment not metOCCT/SOWT Study/Recommendation · code 57 | Lead and Copper Rulecode 5000 | Yes | Resolved |
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 Louisville: frequently asked questions
Who runs City of Louisville?
City of Louisville (PWSID NE3102512) is a community water system owned by a local government. It is regulated by the NE state drinking water program.
How many people does City of Louisville serve?
City of Louisville reports serving 1,400 people through 623 service connections in Cass County, Nebraska.
Where does City of Louisville get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does City of Louisville have any drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in July 2002. 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 Louisville'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; 2 are health-based, and the most recent began in July 2002. For current results, consult the system's annual water quality report, EPA ECHO, or the NE state drinking water program.
Where can I find City of Louisville's water quality report?
As a community water system, City of Louisville 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 Cass County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Plattsmouth, City of | Cass | 6,680 | Community | Groundwater |
| Beaver Lake Association Inc. | Cass | 3,144 | Community | Surface water |
| Cass Co Rwd 1 | Cass | 2,958 | Community | Groundwater |
| Cass Co Rwd 2 | Cass | 1,860 | Community | Groundwater |
| Cass Co Sid 5 - Buccaneer Bay | Cass | 1,417 | Community | Groundwater |
| Weeping Water, City of | Cass | 1,107 | 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, “Louisville, City of, PWSID NE3102512, Nebraska”, https://aquacensus.com/water-systems/nebraska/louisville-city-of-ne3102512 (data as of October 1, 2026).