CITY OF SAN JOSE - NSJ/ALVISO: EPA violation history, explained
CITY OF SAN JOSE - NSJ/ALVISO has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 45,559 people get their water from it, across 2,206 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, CITY OF SAN JOSE - NSJ/ALVISO ranks 5,571th by violation burden (57th percentile) - 4 violations total, 3 health-baseds.
Against the CA average
CA's 803 covered systems average 5.8 health-based violations each; CITY OF SAN JOSE - NSJ/ALVISO carries 3, not more than typical for the state. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
CITY OF SAN JOSE - NSJ/ALVISO's most recent violation on record is dated 2008-01-04, with the most recent health-based one dated 2008-01-04. Last reported to EPA: 06/22/2026.
The concern categories on record
CITY OF SAN JOSE - NSJ/ALVISO'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); 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 CITY OF SAN JOSE - NSJ/ALVISO's record does not cover
Everything on this page is CITY OF SAN JOSE - NSJ/ALVISO's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and CITY OF SAN JOSE - NSJ/ALVISO's customers' taps is household plumbing, invisible to a system-level record ranked 5,571th of 12,903 by violation count. The guide to what this data misses covers that gap.