Hawaii
The stormwater permit for construction in Hawaii
Hawaii runs its own NPDES programme, so a state issued construction general permit governs. Below is what our engine can say about it, and where we have not read that permit, what it will not say.
Governing permit
Not verified for Hawaii
We have not read the construction general permit that governs this jurisdiction, so we will not name one. Confirm which permit applies with Hawaii Department of Health (DOH), Clean Water Branch (CWB) before you break ground.
Who may prepare the plan
No preparer credential foundNo preparer credential was found for Hawaii. On what we have verified, a generated plan can be adopted by the operator without a credentialed signature. Local ordinances can still be stricter than state law.
No preparer credential found in the reviewed sources. Not exhaustively verified; confirm with the state agency and any local ordinance.
No permit section cited. Confirm this with your permitting authority.
Does a site in Hawaii need coverage
Worked for a one acre site as a reference point. Change the acreage in the tool below and the answer, and its reasoning, change with it.
Coverage
Permit coverage required
The project disturbs 1 acres, at or above the 1 acre threshold, so it needs permit coverage.
Determined against dataset version 2026-07-19.
Read these before you act on the answer
- We could not verify which permit governs a construction site in Hawaii. Confirm with the state permitting authority before you break ground.
- No preparer credential was found for Hawaii. On what we have verified, a generated plan can be adopted by the operator without a credentialed signature. Local ordinances can still be stricter than state law.
- Basinwise does not perform the physical site inspections the permit requires. Those must be carried out on site by a qualified person.
How this answer was reached, step by step
- 1
Coverage threshold
The project disturbs 1 acres, at or above the 1 acre threshold, so it needs permit coverage.
- 2
Permitting authority
Hawaii runs its own NPDES programme, and we have not verified its construction general permit. We will not guess its requirements.
- 3
Preparer credential
No preparer credential was found for Hawaii. On what we have verified, a generated plan can be adopted by the operator without a credentialed signature. Local ordinances can still be stricter than state law.
What to do next
- 1. Confirm the governing permit. We have not verified this. Contact Hawaii Department of Health (DOH), Clean Water Branch (CWB) and ask which construction general permit covers your site. Hawaii Department of Health (DOH), Clean Water Branch (CWB)
- 2. Settle the preparer question before you draft. Getting this wrong costs a redraft at best. The detail is on the credential page for this state. Preparer credential in Hawaii
- 3. Screen the site. Run the real acreage and receiving water facts through the tool below. You get the inspection frequency, the stabilisation deadlines and the filing path with the permit section behind each.
- 4. Read the requirements in full. SWPPP requirements in Hawaii
Screen a Hawaii site now
Runs in your browser. Nothing about the site is transmitted.
What people ask about the Hawaii construction stormwater permit
Do I need a stormwater permit for a construction site in Hawaii?
Permit coverage is triggered at one acre of land disturbance, and below one acre if the project is part of a larger common plan of development or sale that will ultimately disturb an acre or more. The project disturbs 1 acres, at or above the 1 acre threshold, so it needs permit coverage.
Who issues the construction stormwater permit in Hawaii?
We have not verified which permit governs construction stormwater in Hawaii. Confirm with Hawaii Department of Health (DOH), Clean Water Branch (CWB) before you break ground. We will not name a permit we have not read.
Does Hawaii require a qualified preparer for the plan?
No preparer credential was found for Hawaii. On what we have verified, a generated plan can be adopted by the operator without a credentialed signature. Local ordinances can still be stricter than state law.
Keep the record Hawaii will ask you for
The screening is free. Holding the written plan and the retained inspection log is what the permit actually demands.