Tap Truth EPA drinking water records, in plain English

County drinking water records

Big Horn County, MT drinking water systems

8 community water systems serve Big Horn County, MT, reporting 7,759 people served in all.

4 of them had at least one health-based violation in the last 10 years. 6 systems still have one unresolved.

5 rely mainly on groundwater and 3 on surface water, counting water bought from other systems.

Their lead service line inventories list 3 lead lines, 26 galvanized lines that must be replaced and 1,028 lines of unknown material.

1 more system is placed in Big Horn County, MT by the county its records name because it has no service area map that lines up with its own records, so it is listed apart and not counted here.

Community water systems
8
People served, sum of each system's own figure
7,759
Systems with a health-based violation, last 10 years
4
Systems with one unresolved
6
Lead service lines in inventories
3

Water systems serving Big Horn County

8 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
City of Hardin Hardin 3,500 Surface water 0 0 3
Crow Agency Water System Crow Agency 2,057 Surface water 17 1 0
Busby Community Water System Busby 535 Groundwater 3 1 0
Town of Lodge Grass Lodge Grass and land outside it 480 Groundwater 0 1 0
Fort Smith Water and Sewer District Fort Smith 450 Groundwater 0 0 0
Pryor Water System Pryor 406 Groundwater 2 2 0
Wyola Water System Wyola 281 Groundwater 3 3 0
Wegner Water Service Hauler Hardin and land outside it 50 Purchased surface water 0 7 0

Systems placed by county record in Big Horn County

1 system

EPA has no service area map for this system. It is placed by the county its records name (the counties EPA lists it serving, or the county coded in its ID where EPA lists none), and without a map it is not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Yellowtail Dam GC System County on record 125 Groundwater 0 0 0

Cities and towns in Big Horn County

7 places

Back to Montana

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations