What's in CITY OF ROCKVILLE's water?
CITY OF ROCKVILLE has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 52,000 people get their water from it, across 17,500 connections.
CITY OF ROCKVILLE's record against the rest of the country
89 total violations and 1 health-based ones put CITY OF ROCKVILLE at the 44th percentile nationally for violation burden, rank 7,270 of 12,903.
Against the average
Among the 244 systems in this dataset, the average is 11.2 health-based violations - CITY OF ROCKVILLE's 1 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
CITY OF ROCKVILLE's most recent violation on record is dated 2025-02-07, with the most recent health-based one dated 2008-01-10. Last reported to EPA: 05/18/2026.
The concern categories on record
CITY OF ROCKVILLE'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:
- Disinfection byproducts - flagged from: TTHM
The most severe category on record is disinfection byproducts, which points toward a carbon-class filter if you want to address it directly.
What CITY OF ROCKVILLE's record does not cover
This is what CITY OF ROCKVILLE 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. Between the utility's meter and CITY OF ROCKVILLE's customers' taps is household plumbing, invisible to a system-level record ranked 7,270th of 12,903 by violation count. The guide to what this data misses covers that gap.