Bolthole Index county-legal census · checked 2026-07-01
Septic permitting in Hawaii is state-run, administered by state agencies across all 5 counties.Every entry below names the approving authority for that county, cited to the authority’s own page.
Septic rules change and some cities run their own programs — treat this as a verified starting point, not legal advice. All states → Hawaii water rights & wells → Full Hawaii profile →
5 counties · state agency
Hawaii State Department of Health, Wastewater Branch
Hawaii DOH Wastewater Branch - Individual Wastewater Systems ↗Hawaii State Department of Health - Wastewater Branch
Hawaii DOH Wastewater Branch - Individual Wastewater Systems ↗Hawaii Department of Health (Wastewater Branch; DOH has jurisdiction and control of Kalawao County)
Hawaii DOH - Kalaupapa Important Information ↗Hawaii State Department of Health, Wastewater Branch (Kauai District Health Office)
Kauai District Health Office - Wastewater FAQs ↗Hawaii State Department of Health, Wastewater Branch
Hawaii DOH e-Permitting - Wastewater Branch Applications ↗Every county here has a full profile — its index score, water, land prices, and the rest of its building rules. See the Hawaii state page for all counties ranked, or the national septic guide.
General guidance, not legal advice. Off-grid, building, and land-use rules are often set at the county level and change often. Verify with your county and state before acting. Data reviewed 2026-06-26.
