Water quality data for 1 public water systems serving Sioux County, North Dakota — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.
Multiple systems have significant violations or lead levels approaching the federal action level.
Sioux County: 5 communities across 1 water system. 0.0% have no open violations.
Sioux County is served by 1 water system covering 5 communities. 0% have no open violations.
Of the communities reporting lead results, 5 recorded a detection, with a median of 6.27 ppb — 42% of the federal action level. 0 reported none detected, which means below the laboratory limit rather than an absence of lead.
No community here has PFAS above the federal limit on record. State inspectors recorded significant deficiencies at 5 of them.