Water quality for ZIP code 59034
ZIP 59034 covers Hardin in Big Horn County, Montana, one of 11 ZIP codes in the county. 23 active public water systems serve the county; 14 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Big Horn County
4 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Hardin City of Hardin |
3,500 | 1 | 4.6 mi | |
| Yellowtail Dam GC System Hardin |
125 | 2 | 5.2 mi | |
| Fort Smith Water and Sewer District Fort Smith |
450 | 0 | 29.0 mi | |
| Lodge Grass Town of Lodge Grass |
480 | 2 | 38.5 mi |
Non-community systems in Big Horn County (18: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Yellowtail Dam Powerplant and Visitor CE Hardin |
48 | 0 | 0 | |
|
Reese and Ray Iga Hardin Hardin |
25 | 0 | 0 | |
|
Hardin KOA Cistern Hardin |
100 | 1 | 1 | |
|
Big Horn CO Historical Museum Hardin |
206 | 0 | 0 | |
|
Little Bighorn Battlefield NM Crow Agency |
2,020 | 0 | 0 | |
|
Hardin Eastbound Rest Area Hardin |
877 | 1 | 0 | |
|
Hardin Westbound Rest Area Hardin |
715 | 2 | 0 | |
|
7th Ranch RV Camp Garryowen |
102 | 1 | 0 | |
|
Cottonwood Camp Fort Smith Fort Smith |
85 | 3 | 1 | |
|
Absaloka Mine Hardin |
80 | 2 | 0 | |
|
Kirby Saloon Busby |
25 | 3 | 1 | |
|
Chief Plenty Coups Museum Pryor |
262 | 0 | 0 | |
|
ST Charles School Pryor |
152 | 1 | 1 | |
|
Spring Creek Coal Domestic Decker |
200 | 1 | 0 | |
|
Spring Creek Mine Decker |
200 | 0 | 0 | |
|
Tongue River Campers Point Decker |
305 | 0 | 0 | |
|
Tongue River Pee Wee Point Decker |
300 | 0 | 0 | |
|
East Decker Coal Mine Decker |
28 | 2 | 0 |
About this data
Water systems are matched to Big Horn 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 or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
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 Montana 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.