NAS NORTH ISLAND & NAB CORONADO: EPA violation history, explained
NAS NORTH ISLAND & NAB CORONADO has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 36,990 people through 1,415 service connections.
How this compares nationally
NAS NORTH ISLAND & NAB CORONADO has 4 violations on record in total, 4 of thems health-based - ranking it 4,587th of 12,903 systems by violation count, the 64th percentile nationally.
How NAS NORTH ISLAND & NAB CORONADO compares within CA
NAS NORTH ISLAND & NAB CORONADO's 4 health-based violations sit within the CA average of 5.8, across 803 systems statewide. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for NAS NORTH ISLAND & NAB CORONADO is from 2008-01-01 (health-based: 2008-01-01). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
NAS NORTH ISLAND & NAB CORONADO'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)
- Disinfection byproducts - flagged from: TTHM
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
NAS NORTH ISLAND & NAB CORONADO'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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 4 logged violations can see. The guide to what this data misses covers that gap.