Tap Truth EPA drinking water records, in plain English

County drinking water records

Fergus County, MT drinking water systems

9 community water systems serve Fergus County, MT, reporting 7,276 people served in all.

2 of them had at least one health-based violation in the last 10 years. 2 systems still have one unresolved.

8 rely mainly on groundwater and 1 on surface water, counting water bought from other systems.

Their lead service line inventories list 4 lead lines, 60 galvanized lines that must be replaced and 2,268 lines of unknown material.

2 more systems are placed in Fergus County, MT by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
9
People served, sum of each system's own figure
7,276
Systems with a health-based violation, last 10 years
2
Systems with one unresolved
2
Lead service lines in inventories
4

Water systems serving Fergus County

9 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 Lewistown Lewistown 5,923 Groundwater 0 0 0
Mountain Acres MB HM Pk Lewistown and land outside it 320 Purchased groundwater 0 0 0
Town of Winifred Winifred 274 Groundwater 1 1 0
Town of Denton Denton 255 Surface water 76 0 4
Town of Moore Moore 186 Groundwater 0 1 0
Roy Water and Sewer District Roy 110 Groundwater 0 0 0
Town of Grass Range Grass Range 102 Groundwater 0 0 0
Ayers Hutterite Colony Grass Range and land outside it 58 Groundwater 0 0 0
Spring Creek Colony Lewistown Lewistown and land outside it 48 Groundwater 0 0 0

Systems placed by county record in Fergus County

2 systems

EPA has no service area map for these systems. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
King Ranch Colony County on record 56 Groundwater 22 1 0
Deerfield Hutterite Colony County on record 51 Groundwater 0 1 0

Cities and towns in Fergus County

6 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