What's in EUREKA, CITY OF's water?
EUREKA, CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 27,078, over 9,821 connections.
How this compares nationally
1 total violations and 1 health-based ones put EUREKA, CITY OF at the 29th percentile nationally for violation burden, rank 9,188 of 12,903.
Against the CA average
Among the 803 CA systems in this dataset, the average is 5.8 health-based violations - EUREKA, CITY OF's 1 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
EUREKA, CITY OF's most recent violation on record is dated 1993-01-06, with the most recent health-based one dated 1993-01-06. Last reported to EPA: 06/22/2026.
The concern categories on record
EUREKA, CITY OF'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: Surface Water Treatment Rule
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 EUREKA, CITY OF's record does not cover
Everything on this page is EUREKA, CITY OF's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 1 logged violations can see. The guide to what this data misses covers that gap.