Not enough data for a standalone page
Gilliam County has fewer than 30 tests on record, so it doesn't meet our indexing gate. It appears as a row in theOregon county table instead.
No test data for Gilliam County. See Oregon state-level figures and EPA zone 2.
Gilliam County has fewer than 30 tests on record, so it doesn't meet our indexing gate. It appears as a row in theOregon county table instead.