Bonneville County, Idaho — public water systems
At a glance
126 active public water systems are filed under Bonneville County, Idaho in EPA's SDWIS records, together reporting 137,194 people served. The largest is City of Idaho Falls, which reports serving 69,450 people. 32 are community water systems serving people where they live; the other 94 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
126
Population served
137.2K
Community systems
32
Groundwater share
100%
How does Bonneville County compare with other Idaho counties?
Bonneville County has the 4th-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 137,194 people served in total, the 4th-largest county figure in the state and 7.8% of the statewide total. The average system here reports serving 1,089 people, about 21% above 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 Bonneville County's drinking water come from?
By primary water source, Bonneville County's active systems draw on groundwater (126, 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 Idaho Falls, draws primarily on groundwater.
What kinds of water systems operate in Bonneville County?
Bonneville County's active systems break down as 32 community systems (25%), 32 non-transient non-community systems (25%) and 62 transient non-community systems (49%). 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 (79%), local government (13%), federal government (7.1%) and state government (0.8%).
The 50 largest water systems in Bonneville County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Idaho Falls City of | Bonneville | 69,450 | Community | Groundwater |
| 2 | Falls Water Company Inc. | Bonneville | 22,650 | Community | Groundwater |
| 3 | Ammon City of | Bonneville | 17,338 | Community | Groundwater |
| 4 | Iona Water Dept | Bonneville | 2,717 | Community | Groundwater |
| 5 | Comore Loma | Bonneville | 1,500 | Community | Groundwater |
| 6 | Melaleuca Warehouse Facility | Bonneville | 1,397 | Non-transient non-community | Groundwater |
| 7 | Bonneville High School | Bonneville | 1,354 | Non-transient non-community | Groundwater |
| 8 | Ucon City of | Bonneville | 1,161 | Community | Groundwater |
| 9 | Sandy Downs Rodeo Grounds and Race Track | Bonneville | 1,000 | Transient non-community | Groundwater |
| 10 | LDS Church - Central Ave | Bonneville | 851 | Transient non-community | Groundwater |
| 11 | Rocky Mountain Middle School | Bonneville | 813 | Non-transient non-community | Groundwater |
| 12 | LDS Ucon Stake House-5144612 | Bonneville | 685 | Transient non-community | Groundwater |
| 13 | 3d Water Association | Bonneville | 680 | Community | Groundwater |
| 14 | Taylor Mountain Water and Sewer District | Bonneville | 600 | Community | Groundwater |
| 15 | LDS Church Osgood Bldg | Bonneville | 582 | Transient non-community | Groundwater |
| 16 | LDS Church - Shadow Mtn | Bonneville | 581 | Transient non-community | Groundwater |
| 17 | Noise Park Idaho Falls | Bonneville | 500 | Transient non-community | Groundwater |
| 18 | Christ Community Church | Bonneville | 500 | Transient non-community | Groundwater |
| 19 | LDS Church Charlotte Bldg | Bonneville | 497 | Transient non-community | Groundwater |
| 20 | American Heritage Charter School | Bonneville | 490 | Non-transient non-community | Groundwater |
| 21 | LDS Church St Leon Bldg-5278333 | Bonneville | 475 | Transient non-community | Groundwater |
| 22 | LDS 5th West Meetinghouse | Bonneville | 471 | Transient non-community | Groundwater |
| 23 | LDS Church Coltman Bldg-5047005 | Bonneville | 442 | Transient non-community | Groundwater |
| 24 | LDS Milo 1st and 2nd Ward -5069327 | Bonneville | 413 | Transient non-community | Groundwater |
| 25 | J and K Water Corp | Bonneville | 370 | Community | Groundwater |
| 26 | Fairview North | Bonneville | 350 | Non-transient non-community | Groundwater |
| 27 | Bsa Little Lemhi Scout Camp | Bonneville | 300 | Transient non-community | Groundwater |
| 28 | LDS Bonneville High School Sem-5164362 | Bonneville | 300 | Transient non-community | Groundwater |
| 29 | Yellowstone Chevron | Bonneville | 300 | Transient non-community | Groundwater |
| 30 | Frazier Industrial Company | Bonneville | 300 | Non-transient non-community | Groundwater |
| 31 | Usfs Calamity Campground | Bonneville | 300 | Transient non-community | Groundwater |
| 32 | Blackhawk Estates/Iron Rim | Bonneville | 270 | Community | Groundwater |
| 33 | LDS Church Palisades -5069335 | Bonneville | 251 | Transient non-community | Groundwater |
| 34 | Usfs Falls Campground and Group Area | Bonneville | 250 | Transient non-community | Groundwater |
| 35 | Country Life Estates | Bonneville | 250 | Community | Groundwater |
| 36 | Riverbend Meats | Bonneville | 242 | Non-transient non-community | Groundwater |
| 37 | Riverside Park Campground | Bonneville | 200 | Transient non-community | Groundwater |
| 38 | Blm Byington Recreation Site | Bonneville | 200 | Transient non-community | Groundwater |
| 39 | Gem Lake Water System | Bonneville | 200 | Non-transient non-community | Groundwater |
| 40 | Blm Conant Boat Access | Bonneville | 200 | Transient non-community | Groundwater |
| 41 | Idahoan Foods Idaho Falls Plant | Bonneville | 200 | Non-transient non-community | Groundwater |
| 42 | Itd Clark Hill Rest Area | Bonneville | 200 | Transient non-community | Groundwater |
| 43 | Panorama Hills Water Company | Bonneville | 175 | Community | Groundwater |
| 44 | Yellowstone Plastics | Bonneville | 165 | Non-transient non-community | Groundwater |
| 45 | LDS West Pine Creek Rec Center-5112222 | Bonneville | 150 | Transient non-community | Groundwater |
| 46 | Sunset Trailer Ranch | Bonneville | 150 | Community | Groundwater |
| 47 | Telford Park | Bonneville | 150 | Non-transient non-community | Groundwater |
| 48 | Eagle Farms | Bonneville | 130 | Non-transient non-community | Groundwater |
| 49 | The Centre at Rainey Creek | Bonneville | 129 | Community | Groundwater |
| 50 | Lighthouse Montessori School | Bonneville | 125 | Non-transient non-community | Groundwater |
All other water systems in Bonneville County (76)
The remaining active systems filed under Bonneville County, largest first, with the population each reports serving.
- Recreational Sports and Imports120
- Cross-Roads Subdivision117
- Bonneville Acres Water Users Assn Inc.100
- Sage Lakes Pro Shop and Restaurant100
- Sunnyside Park Utilities Inc.100
- Sand Creek Golf Course Club House100
- Usbr Juniper Park Ririe Reservoir100
- Dads North Yellowstone100
- Sand Creek Golf Course Fountain100
- Gem Lake Industrial Park90
- Evolution Plaza90
- Andco Management83
- Miller Country Estates83
- Swan Valley Elementary82
- Lakeview Homeowners Assn Inc.80
- St Leon Ind Park75
- Falcon Ridge Subdivision75
- Osgood School73
- Broadway Apartments72
- Royal Vacation Home Water Corp70
- South Fork Lodge70
- Bonneville County Fairgrounds70
- Reeds Inc.67
- Rio Products65
- Kjs Travel Center65
- LDS Church Grays Lake65
- Highway Estates Water Assn65
- Palisades Summer Home Owner Assn60
- Good 2 Go Stores #12160
- Pine Basin Camp Joint School Dist60
- Cottonwood Acres 3 & 560
- Lazy Eight Estates60
- Nur Water Assn60
- Woodland Heights Water Assn #154
- Calamity Water Users Assn50
- Hucks Rainey Creek50
- Ririe Hilltop Subway50
- Andersen Manufacturing Inc.50
- Big Elk Creek Ymca Camp50
- The Osgood Store50
- Santa Maria Style Grilling50
- Thunder Stadium50
- Cottonwood Acres Div 443
- Township Park Water Company43
- Covered Wagon Saloon and Rv Park42
- Westwood Water Assn41
- Rancho Via Well Users Assn Inc.40
- Usfs Palisades Creek Campground40
- Telford Academy40
- Karey Lane Well Inc.38
- Falls Southern Baptist Church35
- Snake River Roadhouse35
- Starting Line35
- Deb and Riennas Day Care35
- Dj Park Well35
- Brookhaven Water Assn33
- Sleepy J Cabins LLC33
- Steele N Jos Bone33
- Sohns Mobile Home Park Inc.32
- New Phase Investments LLC30
- Chapel in the Valley30
- Northside Estates Well30
- Palisades Base Camp30
- Blm Kelly Island Campground30
- Woodland Furniture LLC30
- Stinker Stores Inc.-2530
- Hk Contractors30
- Titan Machinery26
- Palisades Park Owners Assn25
- Wight Farm25
- Good 2 Go Store #1725
- Motor-Vu Drive-in25
- Snake River Animal Shelter25
- Hardys Bar and Grill25
- Palisades Rv Park25
- Usfs Palisades Ranger District25
Bonneville County water systems: frequently asked questions
How many public water systems are in Bonneville County, Idaho?
EPA's SDWIS records file 126 active public water systems under Bonneville County, Idaho: 32 community systems (25%), 32 non-transient non-community systems (25%) and 62 transient non-community systems (49%).
Who supplies drinking water in Bonneville County, ID?
The largest community water systems filed under Bonneville County are City of Idaho Falls (69,450 people served), Falls Water Company Inc. (22,650 people served) and City of Ammon (17,338 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 Bonneville County's drinking water come from groundwater or surface water?
Of the 126 active public water systems in Bonneville County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, City of Idaho Falls, uses groundwater.
Where can I find a water quality report for Bonneville 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. 32 community systems are filed under Bonneville 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 Bonneville 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 Bonneville County, Idaho”, https://aquacensus.com/water-systems/idaho/bonneville (data as of October 1, 2026).