Campbell County, Wyoming — public water systems
At a glance
68 active public water systems are filed under Campbell County, Wyoming in EPA's SDWIS records, together reporting 52,981 people served. The largest is City of Gillette, which reports serving 32,222 people. 45 are community water systems serving people where they live; the other 23 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
68
Population served
53K
Community systems
45
Groundwater share
100%
How does Campbell County compare with other Wyoming counties?
Campbell County has the 2nd-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 52,981 people served in total, the 5th-largest county figure in the state and 8.2% of the statewide total. The average system here reports serving 779 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 Campbell County's drinking water come from?
By primary water source, Campbell County's active systems draw on groundwater (59, 87%) and purchased groundwater (9, 13%). 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, City of Gillette, draws primarily on groundwater.
What kinds of water systems operate in Campbell County?
Campbell County's active systems break down as 45 community systems (66%), 21 non-transient non-community systems (31%) and 2 transient non-community systems (2.9%). 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 non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. 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 private (75%), local government (24%) and state government (1.5%).
The 50 largest water systems in Campbell County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Gillette, City of | Campbell | 32,222 | Community | Groundwater |
| 2 | Wright Water & Sewer District | Campbell | 3,207 | Community | Groundwater |
| 3 | Sleepy Hollow Subdivision | Campbell | 2,400 | Community | Groundwater |
| 4 | Antelope Valley I&S District (Avisd) | Campbell | 1,280 | Community | Groundwater |
| 5 | Fox Park Subdivision | Campbell | 843 | Community | Groundwater |
| 6 | Heritage Village Subdivision | Campbell | 750 | Community | Groundwater |
| 7 | Foothills Mobile Home Park | Campbell | 735 | Community | Purchased groundwater |
| 8 | Eastview Manufactured Home Community | Campbell | 688 | Community | Purchased groundwater |
| 9 | Black Thunder East, LLC Admin | Campbell | 650 | Non-transient non-community | Groundwater |
| 10 | Black Thunder Coal Mine | Campbell | 600 | Non-transient non-community | Groundwater |
| 11 | Navajo Trans Enrg. Co., LLC (Cordero) | Campbell | 550 | Non-transient non-community | Groundwater |
| 12 | Crestview Estates Subdivision | Campbell | 500 | Community | Groundwater |
| 13 | Westview Mhc | Campbell | 416 | Community | Purchased groundwater |
| 14 | Means Improvement & Service District | Campbell | 410 | Community | Groundwater |
| 15 | Nickelson Farms Water Company | Campbell | 400 | Community | Groundwater |
| 16 | Freedom Hills Subdivision | Campbell | 400 | Community | Groundwater |
| 17 | Countryside Water Users, Inc.. | Campbell | 360 | Community | Groundwater |
| 18 | Rochelle Coal Mine | Campbell | 306 | Non-transient non-community | Groundwater |
| 19 | Highview Mfg Mobile Home Community (Mhc) | Campbell | 304 | Community | Purchased groundwater |
| 20 | Eagle Specialty Materials, LLC-Belle Ayr | Campbell | 300 | Non-transient non-community | Groundwater |
| 21 | Eagle Special. Mats, LLC-Rawhide School | Campbell | 295 | Non-transient non-community | Groundwater |
| 22 | Cook Road Water District | Campbell | 291 | Community | Groundwater |
| 23 | Eagle Spec. Mat., LLC-Eagle Butte Mine | Campbell | 277 | Non-transient non-community | Groundwater |
| 24 | Cedar Hills Water Association | Campbell | 258 | Community | Groundwater |
| 25 | Wrangler Estates | Campbell | 250 | Community | Groundwater |
| 26 | Powder River Coal-Rawhide Mine | Campbell | 235 | Non-transient non-community | Groundwater |
| 27 | American Road W&S District | Campbell | 220 | Community | Groundwater |
| 28 | Powder River Coal-Caballo Mine | Campbell | 200 | Non-transient non-community | Groundwater |
| 29 | Stone Gate Estates | Campbell | 198 | Community | Groundwater |
| 30 | Force Road Joint Powers Board | Campbell | 195 | Community | Groundwater |
| 31 | People`S Improvement & Service District | Campbell | 176 | Community | Groundwater |
| 32 | Lex Mobile Home Park | Campbell | 172 | Community | Purchased groundwater |
| 33 | North Antelope Coal Mine | Campbell | 170 | Non-transient non-community | Groundwater |
| 34 | Black Hills Power Incorporated | Campbell | 154 | Non-transient non-community | Groundwater |
| 35 | Southfork Estates | Campbell | 144 | Community | Groundwater |
| 36 | Bennor Estates & Improvement District | Campbell | 144 | Community | Purchased groundwater |
| 37 | Eagle Ridge MHP, LLC | Campbell | 140 | Community | Groundwater |
| 38 | Green Valley Estates I&S District | Campbell | 140 | Community | Groundwater |
| 39 | North Gurley Mobile Home Park | Campbell | 128 | Community | Purchased groundwater |
| 40 | Eight Mile Subdivision | Campbell | 120 | Community | Groundwater |
| 41 | Section 4 Water System Incorporated | Campbell | 120 | Community | Groundwater |
| 42 | Coal Creek Mine-Thunder Basin Coal Co | Campbell | 105 | Non-transient non-community | Groundwater |
| 43 | Hoy Mobile Home Park | Campbell | 100 | Community | Groundwater |
| 44 | Play Park LLC | Campbell | 96 | Community | Groundwater |
| 45 | Rozet Ranchettes I&S District | Campbell | 85 | Community | Groundwater |
| 46 | Buckskin Mining Company-Kiewit Corp | Campbell | 80 | Non-transient non-community | Groundwater |
| 47 | Ward Creek Landowners Association | Campbell | 77 | Community | Groundwater |
| 48 | Dry Fork Station | Campbell | 75 | Non-transient non-community | Groundwater |
| 49 | Pineview I&S District | Campbell | 75 | Community | Groundwater |
| 50 | School Creek Mine | Campbell | 75 | Non-transient non-community | Groundwater |
All other water systems in Campbell County (18)
The remaining active systems filed under Campbell County, largest first, with the population each reports serving.
- Stroup Trailer Court74
- Rodeo Flats72
- Overbrook Subdivision66
- Western Fuels-Wyoming Inc..64
- Red Hills Subdivison62
- Wyodak Mine60
- Iron Horse Skateway55
- Four J School Campbell Sch Dis50
- Ne Wy Regional Airport50
- Meadow Springs Imp & Serv45
- Rafter D Improvement & Service District40
- Fox Ridge Water System38
- Lakeview Mobile Home Park36
- Little Powder School32
- All Seasons Rv Park31
- Recluse School #231
- Southside Well I&S District30
- Hagens Estates29
Campbell County water systems: frequently asked questions
How many public water systems are in Campbell County, Wyoming?
EPA's SDWIS records file 68 active public water systems under Campbell County, Wyoming: 45 community systems (66%), 21 non-transient non-community systems (31%) and 2 transient non-community systems (2.9%).
Who supplies drinking water in Campbell County, WY?
The largest community water systems filed under Campbell County are City of Gillette (32,222 people served), Wright Water & Sewer District (3,207 people served) and Sleepy Hollow Subdivision (2,400 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 Campbell County's drinking water come from groundwater or surface water?
Of the 68 active public water systems in Campbell County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, City of Gillette, uses groundwater.
Where can I find a water quality report for Campbell 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. 45 community systems are filed under Campbell 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 Campbell 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 Campbell County, Wyoming”, https://aquacensus.com/water-systems/wyoming/campbell (data as of October 1, 2026).