Niobrara County, Wyoming — public water systems
At a glance
5 active public water systems are filed under Niobrara County, Wyoming in EPA's SDWIS records, together reporting 3,918 people served. The largest is Wy Dot- Lusk Rest Area, which reports serving 1,700 people. 3 are community water systems serving people where they live; the other 2 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
5
Population served
3.9K
Community systems
3
Groundwater share
100%
How does Niobrara County compare with other Wyoming counties?
Niobrara County has the 23rd-most active public water systems among the 33 counties listed for active Wyoming systems in EPA records; among the 23 with 3 or more systems, the median has 27. Its systems report 3,918 people served in total, the 23rd-largest county figure in the state and 0.6% of the statewide total. The average system here reports serving 784 people, roughly in line with the Wyoming average of 838. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.
Where does Niobrara County's drinking water come from?
By primary water source, Niobrara County's active systems draw on groundwater (5, 100%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 83% and 17% across Wyoming. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Wy Dot- Lusk Rest Area, draws primarily on groundwater.
What kinds of water systems operate in Niobrara County?
Niobrara County's active systems break down as 3 community systems (60%) and 2 transient non-community systems (40%). 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. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as local government (60%) and state government (40%).
Water systems in Niobrara County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Wy Dot- Lusk Rest Area | Niobrara | 1,700 | Transient non-community | Groundwater |
| 2 | Lusk, Town of | Niobrara | 1,576 | Community | Groundwater |
| 3 | Wy Dot-Mule Creek Ra | Niobrara | 500 | Transient non-community | Groundwater |
| 4 | Manville, Town of | Niobrara | 97 | Community | Groundwater |
| 5 | Lance Creek Water District | Niobrara | 45 | Community | Groundwater |
Niobrara County water systems: frequently asked questions
How many public water systems are in Niobrara County, Wyoming?
EPA's SDWIS records file 5 active public water systems under Niobrara County, Wyoming: 3 community systems (60%) and 2 transient non-community systems (40%).
Who supplies drinking water in Niobrara County, WY?
The largest community water systems filed under Niobrara County are Town of Lusk (1,576 people served), Town of Manville (97 people served) and Lance Creek Water District (45 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.
Does Niobrara County's drinking water come from groundwater or surface water?
Of the 5 active public water systems in Niobrara County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Wy Dot- Lusk Rest Area, uses groundwater.
Where can I find a water quality report for Niobrara County?
Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 3 community systems are filed under Niobrara County, so the report to look for is the one from the system that supplies your address.
How can I check violations for a water system in Niobrara County?
Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.
More Wyoming water systems
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, “Public water systems in Niobrara County, Wyoming”, https://aquacensus.com/water-systems/wyoming/niobrara (data as of October 1, 2026).