Big Lake: EPA violation history, explained
Big Lake has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 13,056, over 4,025 connections.
Ranked against every other system in this dataset
6 total violations and 1 health-based ones put Big Lake at the 34th percentile nationally for violation burden, rank 8,556 of 12,903.
Against the MN average
Among the 254 MN systems in this dataset, the average is 0.8 health-based violations - Big Lake's 1 is above that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
Big Lake's most recent violation on record is dated 2009-01-03, with the most recent health-based one dated 1998-01-10. Last reported to EPA: 05/28/2026.
The concern categories on record
Big Lake'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 Big Lake's record does not cover
Big Lake'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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 6 logged violations can see. The guide to what this data misses covers that gap.