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🌿 Landscaping Rules/Composting

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

Some Restrictions

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 β†’

Mililani Mauka, HI

Honolulu County

Some Restrictions

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 β†’

Key Facts Comparison

FactHonoluluMililani Mauka
Code sectionROH Sec. 42-3.5-
OrdinanceOrd. 23-30 (Bill 47)-
ProgramG.R.O.W. curbside-
Start dateApril 1, 2025-
Commercial mandateYes 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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