Public water system · WY5600109
ActiveLance Creek Water District
At a glance
Lance Creek Water District (PWSID WY5600109) is an active community water system in Niobrara County, Wyoming. It reports serving 45 people through 33 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
45
Service connections
33
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Lance Creek Water District compare with other water systems in Niobrara County?
By EPA's size categories, Lance Creek Water District is a very small system (500 people or fewer). Niobrara County has 5 active public water systems, and Lance Creek Water District is the 5th-largest of them by population served. Its population served is well below the county average of 784 people per system, and accounts for 1.1% of the 3,918 people reported by systems filed under the county. Across Wyoming, the 775 active systems average 838 people each. Nationally, the average active community water system reports serving 6,703 people, so Lance Creek Water District 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. Wyoming has 332 active community water systems, 43% of the state's 775 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 585 Wyoming systems (75%) list groundwater as their primary source.
Who owns and regulates Lance Creek Water District?
EPA lists Lance Creek Water District as owned by a local government. The WY state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 3 of the 5 active systems in Niobrara County (60%) are also owned by a local government.
Does Lance Creek Water District have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2026. The violations listed here began between July 2025 and March 2026. By type: 11 monitoring and reporting and 1 required treatment not met. The contaminants or rules involved are Revised Total Coliform Rule, Combined Uranium, Radium-228 and Gross alpha (excluding radon and uranium). EPA lists 6 as resolved, 5 as archived and 1 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. 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. 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 |
|---|---|---|---|---|
| 2026-03-28 | Required treatment not metTreatment Technique, Corrective/Expedited Actions (RTCR) · code 2C | Revised Total Coliform Rulecode 8000 | Yes | Unaddressed |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Archived |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Archived |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Archived |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Archived |
| 2025-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Heptachlorcode 2065 | No | Resolved |
| 2025-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Atrazinecode 2050 | No | Resolved |
| 2025-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorobenzenecode 2274 | No | Resolved |
| 2025-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | No | Resolved |
| 2025-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorocyclopentadienecode 2042 | No | Resolved |
| 2025-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toxaphenecode 2020 | 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.
Lance Creek Water District: frequently asked questions
Who runs Lance Creek Water District?
Lance Creek Water District (PWSID WY5600109) is a community water system owned by a local government. It is regulated by the WY state drinking water program.
How many people does Lance Creek Water District serve?
Lance Creek Water District reports serving 45 people through 33 service connections in Niobrara County, Wyoming.
Where does Lance Creek Water District 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 Lance Creek Water District have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2026. 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 Lance Creek Water District'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, one is health-based, and the most recent began in March 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the WY state drinking water program.
Where can I find Lance Creek Water District's water quality report?
As a community water system, Lance Creek Water District 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 Niobrara County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Wy Dot- Lusk Rest Area | Niobrara | 1,700 | Transient non-community | Groundwater |
| Lusk, Town of | Niobrara | 1,576 | Community | Groundwater |
| Wy Dot-Mule Creek Ra | Niobrara | 500 | Transient non-community | Groundwater |
| Manville, Town of | Niobrara | 97 | 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, “Lance Creek Water District, PWSID WY5600109, Wyoming”, https://aquacensus.com/water-systems/wyoming/lance-creek-water-district-wy5600109 (data as of October 1, 2026).