What's in BLACK HAWK WATER USER DISTRICT's water?
BLACK HAWK WATER USER DISTRICT has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 4,500 people through 1,538 service connections.
BLACK HAWK WATER USER DISTRICT's record against the rest of the country
Out of 12,903 systems in this dataset, BLACK HAWK WATER USER DISTRICT ranks 4,011th by violation burden (69th percentile) - 57 violations total, 4 health-baseds.
Against the SD average
BLACK HAWK WATER USER DISTRICT's 4 health-based violations sit above the SD average of 3.0, across 74 systems statewide. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
BLACK HAWK WATER USER DISTRICT's most recent violation on record is dated 2017-02-07, with the most recent health-based one dated 2017-01-02. Last reported to EPA: 06/17/2026.
The concern categories on record
BLACK HAWK WATER USER DISTRICT's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR); Stage 1 Disinfectants and Disinfection Byproducts Rule
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What BLACK HAWK WATER USER DISTRICT's record does not cover
BLACK HAWK WATER USER DISTRICT's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. This record - 4 health-based violations on file for BLACK HAWK WATER USER DISTRICT - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.