State
Idaho: drinking water records
EPA lists 773 community water systems serving homes in Idaho. 62 took part in EPA's national PFAS survey (UCMR 5), and 9 found at least one PFAS above the level laboratories can measure.
In focus773community water systems
Public records. Clearer context.
0
ZIP reports published
773
community water systems
243
systems with a health-based violation since 2016
51
systems that reached the lead action level since 2016
Counties
- Ada County 54 systems
- Adams County 6 systems
- Bannock County 25 systems
- Bear Lake County 9 systems
- Benewah County 13 systems
- Bingham County 29 systems
- Blaine County 20 systems
- Boise County 20 systems
- Bonner County 51 systems
- Bonneville County 33 systems
- Boundary County 14 systems
- Butte County 4 systems
- Camas County 1 systems
- Canyon County 82 systems
- Caribou County 13 systems
- Cassia County 13 systems
- Clark County 4 systems
- Clearwater County 11 systems
- Custer County 4 systems
- Elmore County 25 systems
- Franklin County 15 systems
- Fremont County 12 systems
- Gem County 7 systems
- Gooding County 8 systems
- Idaho County 19 systems
- Jefferson County 18 systems
- Jerome County 7 systems
- Kootenai County 112 systems
- Latah County 16 systems
- Lemhi County 5 systems
- Lewis County 7 systems
- Lincoln County 4 systems
- Madison County 6 systems
- Minidoka County 8 systems
- Nez Perce County 16 systems
- Oneida County 1 systems
- Owyhee County 7 systems
- Payette County 7 systems
- Power County 12 systems
- Shoshone County 15 systems
- Teton County 11 systems
- Twin Falls County 13 systems
- Valley County 11 systems
- Washington County 3 systems
ZIP reports
Sources
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.