What's in RIO DELL, CITY OF's water?
RIO DELL, CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 3,300 people through 1,360 service connections.
RIO DELL, CITY OF's record against the rest of the country
Out of 12,903 systems in this dataset, RIO DELL, CITY OF ranks 5,596th by violation burden (57th percentile) - 4 violations total, 3 health-baseds.
How RIO DELL, CITY OF compares within CA
Among the 803 CA systems in this dataset, the average is 5.8 health-based violations - RIO DELL, CITY OF's 3 is at or below that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
The last violation EPA has on record for RIO DELL, CITY OF is from 1996-01-10 (health-based: 1996-01-10). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
RIO DELL, 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: 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 this data is and is not
RIO DELL, CITY OF'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. Between the utility's meter and RIO DELL, CITY OF's customers' taps is household plumbing, invisible to a system-level record ranked 5,596th of 12,903 by violation count. The guide to what this data misses covers that gap.