What's in TUD - COLUMBIA WATER SYSTEM's water?
TUD - COLUMBIA WATER SYSTEM has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 5,463, over 2,092 connections.
TUD - COLUMBIA WATER SYSTEM's record against the rest of the country
Out of 12,903 systems in this dataset, TUD - COLUMBIA WATER SYSTEM ranks 9,139th by violation burden (29th percentile) - 2 violations total, 1 health-based.
How TUD - COLUMBIA WATER SYSTEM compares within CA
Among the 803 CA systems in this dataset, the average is 5.8 health-based violations - TUD - COLUMBIA WATER SYSTEM's 1 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for TUD - COLUMBIA WATER SYSTEM is from 2025-01-04 (health-based: 2007-01-02). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
TUD - COLUMBIA WATER SYSTEM'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: Interim Enhanced 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 this data is and is not
This is what TUD - COLUMBIA WATER SYSTEM 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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 2 logged violations can see. The guide to what this data misses covers that gap.