What's in SAN LUIS CITY OF's water?
SAN LUIS CITY OF has at least one health-based violation EPA's ECHO database still lists as unaddressed - the required fix has not been reported complete. 39,705 people get their water from it, across 6,100 connections.
SAN LUIS CITY OF's record against the rest of the country
629 total violations and 9 health-based ones put SAN LUIS CITY OF at the 84th percentile nationally for violation burden, rank 2,034 of 12,903.
Against the AZ average
Among the 199 AZ systems in this dataset, the average is 8.2 health-based violations - SAN LUIS CITY OF's 9 is above that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
SAN LUIS CITY OF's most recent violation on record is dated 2024-06-06, with the most recent health-based one dated 2024-06-06. Last reported to EPA: 05/14/2026.
The concern categories on record
SAN LUIS 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); Groundwater Rule; Revised Total Coliform 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 SAN LUIS CITY OF's record does not cover
SAN LUIS 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 SAN LUIS CITY OF's customers' taps is household plumbing, invisible to a system-level record ranked 2,034th of 12,903 by violation count. The guide to what this data misses covers that gap.