What's in LENNOX's water?

LENNOX has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 2,571 people get their water from it, across 1,200 connections.

LENNOX's record against the rest of the country

LENNOX has 9 violations on record in total, 2 of thems health-based - ranking it 6,619th of 12,903 systems by violation count, the 49th percentile nationally.

Against the SD average

LENNOX's 2 health-based violations sit within 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

LENNOX's most recent violation on record is dated 2020-01-03, with the most recent health-based one dated 1997-01-10. Last reported to EPA: 06/17/2026.

The concern categories on record

LENNOX'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 LENNOX's record does not cover

This is what LENNOX reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. This record - 2 health-based violations on file for LENNOX - 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.