Composting: Honolulu vs Mililani Mauka
How do composting rules compare between Honolulu, HI and Mililani Mauka, HI?
Honolulu and Mililani Mauka have similar restriction levels.
Honolulu, HI
Honolulu County
Honolulu County mandates food waste recycling under ROH Sec. 42-3.5, with Ordinance 23-30 adding curbside food scrap collection island-wide by April 1, 2025 through the G.R.O.W. Program.
View full Honolulu rules →Mililani Mauka, HI
Honolulu County
Mililani Mauka households follow ROH Sec. 42-3.5 food waste recycling and the G.R.O.W. curbside program under Ordinance 23-30.
View full Mililani Mauka rules →Key Facts Comparison
| Fact | Honolulu | Mililani Mauka |
|---|---|---|
| Code section | ROH Sec. 42-3.5 | - |
| Ordinance | Ord. 23-30 (Bill 47) | - |
| Program | G.R.O.W. curbside | - |
| Start date | April 1, 2025 | - |
| Commercial mandate | Yes for food establishments | - |
| Code | - | ROH Sec. 42-3.5 |
| Curbside program | - | G.R.O.W. food scraps |
| Effective | - | Phased from April 2025 |
| Setout rule | - | ROH Sec. 42-1.4 |
Highlighted rows indicate differences between cities.
Honolulu FAQ
Do I have to separate food scraps in Honolulu County?
Yes, as the G.R.O.W. Program rolls out island-wide. Commercial food establishments must already divert food waste under Ordinance 23-30 and ROH Sec. 42-3.5.
Can I still backyard compost?
Yes. Home composting on private property remains unregulated and is encouraged as an alternative to curbside diversion across Oahu.
Mililani Mauka FAQ
Can I compost in my Mauka backyard?
Yes. Home compost is allowed if it does not create odors, vermin, or other Chapter 16A nuisances. The Mauka HOA may still require screened bin placement.
When does G.R.O.W. food scrap pickup reach Mauka?
The program began phasing in April 1, 2025. Mililani Mauka follows the standard Honolulu rollout schedule; check ENV for your current service status.
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