Suburban Water Systems-San Jose, CA Water Quality
What's in Suburban Water Systems-San Jose's water?
Suburban Water Systems-San Jose has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 168,843 people through 40,299 service connections.
How this compares nationally
Out of 12,903 systems in this dataset, Suburban Water Systems-San Jose ranks 6,908th by violation burden (46th percentile) - 4 violations total, 2 health-based.
How Suburban Water Systems-San Jose compares within CA
Among the 804 CA systems in this dataset, the average is 5.8 health-based violations - Suburban Water Systems-San Jose's 2 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 Suburban Water Systems-San Jose is from 2022-01-04 (health-based: 1993-01-06). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
Suburban Water Systems-San Jose'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 this data is and is not
Everything on this page is Suburban Water Systems-San Jose'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 Suburban Water Systems-San Jose's customers' taps is household plumbing, invisible to a system-level record ranked 6,908th of 12,903 by violation count. The guide to what this data misses covers that gap.