Is JEFFERSON WATER DEPARTMENT's water safe to drink?
JEFFERSON WATER DEPARTMENT has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 4,182, over 2,080 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, JEFFERSON WATER DEPARTMENT ranks 6,605th by violation burden (49th percentile) - 9 violations total, 2 health-baseds.
Against the IA average
Among the 203 IA systems in this dataset, the average is 3.5 health-based violations - JEFFERSON WATER DEPARTMENT's 2 is at or below that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
JEFFERSON WATER DEPARTMENT's most recent violation on record is dated 2020-01-04, with the most recent health-based one dated 1995-01-10. Last reported to EPA: 06/17/2026.
The concern categories on record
JEFFERSON WATER DEPARTMENT'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 JEFFERSON WATER DEPARTMENT's record does not cover
Everything on this page is JEFFERSON WATER DEPARTMENT's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and JEFFERSON WATER DEPARTMENT's customers' taps is household plumbing, invisible to a system-level record ranked 6,605th of 12,903 by violation count. The guide to what this data misses covers that gap.