What's in ELLSWORTH AFB's water?

ELLSWORTH AFB has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 9,100 people through 2,000 service connections.

Ranked against every other system in this dataset

7 total violations and 4 health-based ones put ELLSWORTH AFB at the 65th percentile nationally for violation burden, rank 4,505 of 12,903.

Against the SD average

ELLSWORTH AFB's 4 health-based violations sit above the SD average of 3.0, across 74 systems statewide. See the lead and copper guide for why lead counts differently.

Most recent violation on record

ELLSWORTH AFB's most recent violation on record is dated 2014-10-04, with the most recent health-based one dated 2014-01-10. Last reported to EPA: 06/17/2026.

The concern categories on record

ELLSWORTH AFB'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)

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 ELLSWORTH AFB's record does not cover

ELLSWORTH AFB'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. Between the utility's meter and ELLSWORTH AFB's customers' taps is household plumbing, invisible to a system-level record ranked 4,505th of 12,903 by violation count. The guide to what this data misses covers that gap.