Water quality for ZIP code 83657
Gem County, Idaho, one of 4 ZIP codes in the county. 33 active public water systems serve the county; 21 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Gem County
5 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Cherry Ridge Rehab |
50 | 1 | 25.1 mi | |
| Bonnie Laura Subd |
60 | 2 | 25.8 mi | |
| Emmett City of |
6,700 | 0 | 26.1 mi | |
| R and V Mobile Home Park |
27 | 2 | 27.4 mi | |
| Edgemont Subd |
40 | 0 | — |
Non-community systems in Gem County (27: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Ola Station LLC |
25 | 3 | 0 | |
|
Lds Church Sweet |
138 | 1 | 1 | |
|
Anderson Reserve |
50 | 1 | 0 | |
|
Sweet Montour School |
50 | 3 | 1 | |
|
Triangle Restaurant |
50 | 2 | 0 | |
|
Montour Country Store |
25 | 1 | 1 | |
|
Usbr Black Canyon Dam Montour Campground |
25 | 1 | 0 | |
|
Usbr Black Canyon Dam Wildrose Park |
25 | 1 | 0 | |
|
Usbr Black Canyon Dam Black Canyon Park |
25 | 2 | 0 | |
|
B and W Fuels INC |
25 | 0 | 0 | |
|
Calvary Chapel of Emmett Emmett |
192 | 7 | 1 | |
|
Wink Salon and Barber |
25 | 0 | 0 | |
|
Emmett Head Start |
55 | 1 | 1 | |
|
Wild Willys #2 |
50 | 1 | 1 | |
|
Payette River Technical Academy |
194 | 0 | 0 | |
|
Elements Kitchen + Bar |
50 | 2 | 0 | |
|
RP Emmett LLC |
60 | 0 | 0 | |
|
Gem County Fairgrounds |
31 | 0 | 0 | |
|
3 Horse Ranch Vineyards |
86 | 0 | 0 | |
|
7 Rivers Livestock Commission |
25 | 2 | 0 | |
|
Lds Church Letha |
369 | 1 | 1 | |
|
Gem County Golf Course |
100 | 1 | 0 | |
|
Toms Cabin |
100 | 1 | 0 | |
|
Shadow Butte Elementary School |
485 | 6 | 3 | |
|
Lds Emmett Stake Center |
474 | 0 | 0 | |
|
Roystone Hot Springs |
60 | 0 | 0 | |
|
Usbr Black Canyon Dam Cobblestone Park |
25 | 0 | 0 |
About this data
Water systems are matched to Gem County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Idaho records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.