Park County, Wyoming — public water systems
At a glance
49 active public water systems are filed under Park County, Wyoming in EPA's SDWIS records, together reporting 38,068 people served. The largest is City of Cody, which reports serving 10,224 people. 11 are community water systems serving people where they live; the other 38 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
49
Population served
38.1K
Community systems
11
Groundwater share
77.6%
How does Park County compare with other Wyoming counties?
Park County has the 5th-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 38,068 people served in total, the 7th-largest county figure in the state and 5.9% of the statewide total. The average system here reports serving 777 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 Park County's drinking water come from?
By primary water source, Park County's active systems draw on groundwater (33, 67%), purchased surface water (7, 14%), groundwater under influence of surface water (5, 10%) and surface water (4, 8.2%). Overall, 78% rely mainly on groundwater (including purchased groundwater) and 22% 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 Cody, draws primarily on purchased surface water.
What kinds of water systems operate in Park County?
Park County's active systems break down as 11 community systems (22%), 2 non-transient non-community systems (4.1%) and 36 transient non-community systems (73%). 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 (55%), federal government (29%), local government (8.2%) and state government (6.1%).
Water systems in Park County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Cody, City of | Park | 10,224 | Community | Purchased surface water |
| 2 | Northwest Rural Water District | Park | 7,330 | Community | Purchased surface water |
| 3 | Powell, City of | Park | 6,310 | Community | Purchased surface water |
| 4 | Ynp-Canyon Village | Park | 4,300 | Non-transient non-community | Surface water |
| 5 | Ynp-Mammoth Hot Springs | Park | 2,600 | Community | Surface water |
| 6 | Ynp-Norris | Park + 1 more | 1,515 | Transient non-community | Surface water |
| 7 | K Bar Z Guest Ranch | Park | 847 | Transient non-community | Groundwater |
| 8 | Buffalo Bill Dam Visitor Center | Park | 500 | Transient non-community | Purchased surface water |
| 9 | Ynp-Tower Fall Cg | Park | 495 | Transient non-community | Groundwater |
| 10 | Green Acres Mobile Home Park | Park | 375 | Community | Purchased surface water |
| 11 | Meeteetse, Town of | Park | 327 | Community | Groundwater under influence of surface water |
| 12 | Jubys Mobile Home Park | Park | 300 | Community | Purchased surface water |
| 13 | Camp Buffalo Bill | Park | 250 | Transient non-community | Groundwater |
| 14 | Ynp-Indian Creek | Park | 240 | Transient non-community | Groundwater |
| 15 | Yellowstone Valley Inn | Park | 237 | Transient non-community | Groundwater |
| 16 | Pahaska Tepee Resort | Park | 205 | Transient non-community | Groundwater under influence of surface water |
| 17 | Shoshone Nf-Wapiti Cg & Rs | Park | 157 | Transient non-community | Groundwater |
| 18 | Shoshone Nf-Three Mile Cg | Park | 150 | Transient non-community | Groundwater |
| 19 | Shoshone Nf-Fox Creek Cg | Park | 120 | Transient non-community | Groundwater |
| 20 | Sleeping Giant Ski Area | Park | 112 | Transient non-community | Groundwater |
| 21 | Big Horn Basin Boat Club | Park | 104 | Transient non-community | Groundwater |
| 22 | Rivers Bend Trailer Court | Park | 96 | Community | Purchased surface water |
| 23 | Ynp-Slough Creek Cg | Park | 94 | Transient non-community | Groundwater |
| 24 | Shoshone Nf-Beartooth Lake Cg | Park | 80 | Transient non-community | Groundwater |
| 25 | Buffalo Bill Sp-Lake Shore Campground | Park | 77 | Transient non-community | Groundwater |
| 26 | Shoshone Nf-Island Lake Cg | Park | 75 | Transient non-community | Groundwater |
| 27 | Absaroka Mountain Lodge | Park | 67 | Transient non-community | Groundwater |
| 28 | 7d Ranch | Park | 61 | Transient non-community | Groundwater |
| 29 | Shoshone Lodge | Park | 60 | Transient non-community | Groundwater |
| 30 | Contango Resources, LLC- Clark Fork | Park | 60 | Non-transient non-community | Groundwater under influence of surface water |
| 31 | Bill Cody Ranch | Park | 60 | Transient non-community | Groundwater |
| 32 | Buffalo Bill St Pk North Fork | Park | 50 | Transient non-community | Groundwater |
| 33 | Green Creek Inn & Rv | Park | 50 | Transient non-community | Groundwater |
| 34 | Shoshone Nf-Eagle Creek Cg | Park | 50 | Transient non-community | Groundwater |
| 35 | Edelweiss | Park | 42 | Transient non-community | Groundwater |
| 36 | Copperleaf Water System | Park | 42 | Community | Groundwater |
| 37 | Elephant Head Lodge | Park | 41 | Transient non-community | Groundwater |
| 38 | Trail Shop | Park | 40 | Transient non-community | Groundwater |
| 39 | Shoshone Nf-Rex Hale Cg | Park | 40 | Transient non-community | Groundwater |
| 40 | Rimrock Ranch | Park | 40 | Transient non-community | Groundwater |
| 41 | Big Valley & Crossed Arrows Imp Dist | Park | 35 | Community | Groundwater |
| 42 | Uxu Ranch LLC | Park | 35 | Transient non-community | Groundwater under influence of surface water |
| 43 | Creekside Lodge | Park | 32 | Transient non-community | Groundwater |
| 44 | Blackwater Creek Ranch | Park | 32 | Transient non-community | Groundwater |
| 45 | Homestead Campground Water System | Park | 28 | Transient non-community | Groundwater |
| 46 | Shoshone Nf-Newton Creek #12 Cg | Park | 25 | Transient non-community | Groundwater |
| 47 | Crossed Sabres Guest Ranch | Park | 25 | Transient non-community | Groundwater under influence of surface water |
| 48 | Shoshone Municipal Pipeline | Park | 25 | Community | Surface water |
| 49 | Painter Estates Hoa | Park | 8 | Transient non-community | Groundwater |
Park County water systems: frequently asked questions
How many public water systems are in Park County, Wyoming?
EPA's SDWIS records file 49 active public water systems under Park County, Wyoming: 11 community systems (22%), 2 non-transient non-community systems (4.1%) and 36 transient non-community systems (73%).
Who supplies drinking water in Park County, WY?
The largest community water systems filed under Park County are City of Cody (10,224 people served), Northwest Rural Water District (7,330 people served) and City of Powell (6,310 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 Park County's drinking water come from groundwater or surface water?
Of the 49 active public water systems in Park County, 78% draw mainly on groundwater and 22% on surface water, counting purchased supplies. The largest system, City of Cody, uses purchased surface water.
Where can I find a water quality report for Park 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. 11 community systems are filed under Park 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 Park 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
- All Wyoming public water systems· 775 active
- Teton County· 112 systems
- Campbell County· 68 systems
- Fremont County· 61 systems
- Laramie County· 50 systems
- Natrona County· 48 systems
- Lincoln County· 44 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
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 Park County, Wyoming”, https://aquacensus.com/water-systems/wyoming/park (data as of October 1, 2026).