Is TERRE DU LAC's water safe to drink?
TERRE DU LAC has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 3,200 people get their water from it, across 1,351 connections.
How this compares nationally
TERRE DU LAC has 126 violations on record in total, 87 of thems health-based - ranking it 98th of 12,903 systems by violation count, the 99th percentile nationally.
Against the MO average
Among the 327 MO systems in this dataset, the average is 6.1 health-based violations - TERRE DU LAC's 87 is above that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
TERRE DU LAC's most recent violation on record is dated 2020-01-07, with the most recent health-based one dated 2016-01-01. Last reported to EPA: 06/16/2026.
The concern categories on record
TERRE DU LAC'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)
- Radionuclides - flagged from: Combined Radium (-226 and -228); Gross Alpha, Excl. Radon and U
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 TERRE DU LAC's record does not cover
This is what TERRE DU LAC 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 - 87 health-based violations on file for TERRE DU LAC - 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.