Bannock County, Idaho — public water systems
At a glance
47 active public water systems are filed under Bannock County, Idaho in EPA's SDWIS records, together reporting 82,237 people served. The largest is City of Pocatello, which reports serving 58,231 people. 23 are community water systems serving people where they live; the other 24 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
47
Population served
82.2K
Community systems
23
Groundwater share
100%
How does Bannock County compare with other Idaho counties?
Bannock County has the 15th-most active public water systems among the 64 counties listed for active Idaho systems in EPA records; among the 47 with 3 or more systems, the median has 27. Its systems report 82,237 people served in total, the 5th-largest county figure in the state and 4.7% of the statewide total. The average system here reports serving 1,750 people, about twice the Idaho average of 899. 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 Bannock County's drinking water come from?
By primary water source, Bannock County's active systems draw on groundwater (47, 100%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 96% and 4.1% across Idaho. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, City of Pocatello, draws primarily on groundwater.
What kinds of water systems operate in Bannock County?
Bannock County's active systems break down as 23 community systems (49%), 3 non-transient non-community systems (6.4%) and 21 transient non-community systems (45%). 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 (77%), local government (19%) and federal government (4.3%).
Water systems in Bannock County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Pocatello City of | Bannock | 58,231 | Community | Groundwater |
| 2 | Chubbuck City of | Bannock | 15,842 | Community | Groundwater |
| 3 | Mccammon City of | Bannock | 800 | Community | Groundwater |
| 4 | Inkom City of | Bannock | 792 | Community | Groundwater |
| 5 | Tyhee Elementary School | Bannock | 675 | Non-transient non-community | Groundwater |
| 6 | Downey City of | Bannock | 625 | Community | Groundwater |
| 7 | LDS Yellowstone Church | Bannock | 467 | Transient non-community | Groundwater |
| 8 | LDS Tyhee Stake Center | Bannock | 436 | Transient non-community | Groundwater |
| 9 | Pebble Creek Ski Area | Bannock | 400 | Transient non-community | Groundwater |
| 10 | Lava Hot Springs City of | Bannock | 386 | Community | Groundwater |
| 11 | Arimo City of | Bannock | 368 | Community | Groundwater |
| 12 | Downata Hot Springs | Bannock | 350 | Transient non-community | Groundwater |
| 13 | Tyhee and S and N Estates Water Assn | Bannock | 300 | Community | Groundwater |
| 14 | Pocatello Koa LLC | Bannock | 250 | Transient non-community | Groundwater |
| 15 | Laceys Vista Acres Water Corp | Bannock | 200 | Community | Groundwater |
| 16 | Caribou Acres | Bannock | 150 | Community | Groundwater |
| 17 | D and M Water Assn | Bannock | 142 | Community | Groundwater |
| 18 | Whitewater Subd | Bannock | 106 | Community | Groundwater |
| 19 | Beech Hollow | Bannock | 100 | Transient non-community | Groundwater |
| 20 | Lava Hot Springs Koa | Bannock | 100 | Transient non-community | Groundwater |
| 21 | Hitt the Road | Bannock | 100 | Transient non-community | Groundwater |
| 22 | Camp Taylor | Bannock | 100 | Transient non-community | Groundwater |
| 23 | Lost Trail | Bannock | 100 | Transient non-community | Groundwater |
| 24 | Equestrian Estates | Bannock | 88 | Community | Groundwater |
| 25 | Twin Pines Mobile Park | Bannock | 86 | Community | Groundwater |
| 26 | Wildhorse Ridge Subd | Bannock | 85 | Community | Groundwater |
| 27 | Lava Campground | Bannock | 80 | Transient non-community | Groundwater |
| 28 | Portneuf Bend Campground | Bannock | 76 | Transient non-community | Groundwater |
| 29 | LDS Virginia Ward Church | Bannock | 75 | Transient non-community | Groundwater |
| 30 | Valley View Estates | Bannock | 74 | Community | Groundwater |
| 31 | LDS Swan Lake Church | Bannock | 62 | Transient non-community | Groundwater |
| 32 | Smith Road Water Users Assn | Bannock | 58 | Community | Groundwater |
| 33 | Mccammon Subway | Bannock | 50 | Transient non-community | Groundwater |
| 34 | Intermountain Vipassana Association | Bannock | 50 | Transient non-community | Groundwater |
| 35 | Usfs Mink Creek Group Use Area | Bannock | 50 | Transient non-community | Groundwater |
| 36 | Tyhee Enterprises | Bannock | 50 | Transient non-community | Groundwater |
| 37 | Baker Ranch | Bannock | 50 | Transient non-community | Groundwater |
| 38 | Thunder Canyon Estates Homeowners Assoc | Bannock | 35 | Community | Groundwater |
| 39 | Idaho Materials and Construction | Bannock | 33 | Non-transient non-community | Groundwater |
| 40 | Swan Lake Culinary Water Company | Bannock | 29 | Community | Groundwater |
| 41 | Space Acres Water Users Assn | Bannock | 29 | Community | Groundwater |
| 42 | Intermountain Gas Company | Bannock | 28 | Non-transient non-community | Groundwater |
| 43 | Moose Mountain | Bannock | 27 | Community | Groundwater |
| 44 | Mink Creek Mountain Estates | Bannock | 27 | Community | Groundwater |
| 45 | Evergreen Acres Subd | Bannock | 25 | Community | Groundwater |
| 46 | Sunnyside Sinclair | Bannock | 25 | Transient non-community | Groundwater |
| 47 | Usfs Scout Mountain Campground | Bannock | 25 | Transient non-community | Groundwater |
Bannock County water systems: frequently asked questions
How many public water systems are in Bannock County, Idaho?
EPA's SDWIS records file 47 active public water systems under Bannock County, Idaho: 23 community systems (49%), 3 non-transient non-community systems (6.4%) and 21 transient non-community systems (45%).
Who supplies drinking water in Bannock County, ID?
The largest community water systems filed under Bannock County are City of Pocatello (58,231 people served), City of Chubbuck (15,842 people served) and City of Mccammon (800 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 Bannock County's drinking water come from groundwater or surface water?
Of the 47 active public water systems in Bannock County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, City of Pocatello, uses groundwater.
Where can I find a water quality report for Bannock 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. 23 community systems are filed under Bannock 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 Bannock 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 Idaho 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 Bannock County, Idaho”, https://aquacensus.com/water-systems/idaho/bannock (data as of October 1, 2026).