What's in SONOMA STATE UNIVERSITY's water?
SONOMA STATE UNIVERSITY has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 10,986 people through 93 service connections.
Ranked against every other system in this dataset
13 total violations and 6 health-based ones put SONOMA STATE UNIVERSITY at the 75th percentile nationally for violation burden, rank 3,199 of 12,903.
How SONOMA STATE UNIVERSITY compares within CA
CA's 803 covered systems average 5.8 health-based violations each; SONOMA STATE UNIVERSITY carries 6, more than typical for the state. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for SONOMA STATE UNIVERSITY is from 2017-01-10 (health-based: 2017-01-05). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
SONOMA STATE UNIVERSITY'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
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
SONOMA STATE UNIVERSITY'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. This record - 6 health-based violations on file for SONOMA STATE UNIVERSITY - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.