Tap Truth EPA drinking water records, in plain English

County drinking water records

Sioux County, ND drinking water systems

2 community water systems serve Sioux County, ND, reporting 6,999 people served in all.

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

2 rely mainly on surface water, counting water bought from other systems.

Their lead service line inventories list 0 lead lines, 0 galvanized lines that must be replaced and 1,043 lines of unknown material.

1 more system lists a mailing address in Sioux County, ND but has no service area map, so it is listed apart and not counted here.

Community water systems
2
People served, sum of each system's own figure
6,999
Systems with a health-based violation, last 10 years
1
Systems with one unresolved
2
Lead service lines in inventories
0

Water systems serving Sioux County

2 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
Standing Rock Rural Water System Cannon Ball, Selfridge and 3 more and land outside them 6,839 Surface water 1 2 0
City of Selfridge Selfridge 160 Purchased surface water 0 1 0

Systems with a mailing address in Sioux County

1 system

EPA has no service area map for this system, and a mailing address is often an office away from the area served, so it is not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
City of Solen Mailing address in Solen 83 Purchased surface water 1 2 0

Cities and towns in Sioux County

5 places

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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